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PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 2
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PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 3
Content Overview
Section A: Overview 17
1. Introduction ................................................................................................................... 18
2. Getting Started .............................................................................................................. 24
3. Document Construction ................................................................................................. 26
Section B: CPU System 30
4. Cortex-M0+ CPU ........................................................................................................... 31
5. DMA Controller Modes ................................................................................................... 37
6. Interrupts ...................................................................................................................... 52
7. Device Security .............................................................................................................63
Section C: System Resources Subsystem (SRSS) 65
8. I/O System .................................................................................................................... 66
9. Clocking System............................................................................................................ 88
10. Power Supply and Monitoring ........................................................................................ 99
11. Chip Operational Modes .............................................................................................. 103
12. Power Modes .............................................................................................................. 104
13. Watchdog Timer .......................................................................................................... 108
14. Trigger Multiplexer Block ............................................................................................. 113
15. Reset System .............................................................................................................. 117
Section D: Digital System 119
16. Serial Communications Block (SCB) ............................................................................ 120
17. CAN FD Controller ...................................................................................................... 179
18. Timer, Counter, and PWM (TCPWM) ............................................................................ 249
19. LCD Direct Drive ......................................................................................................... 285
20. Inter-IC Sound Bus ...................................................................................................... 294
21. CRYPTO .....................................................................................................................301
Section E: Analog System 314
22. SAR ADC ....................................................................................................................315
23. Low-Power Comparator ............................................................................................... 339
24. Continuous Time Block mini (CTBm) ............................................................................ 344
25. CapSense ...................................................................................................................353
26. Temperature Sensor .................................................................................................... 354
27. Analog Routing ............................................................................................................ 357
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 4
Section F: Program and Debug 365
28. Program and Debug Interface ...................................................................................... 366
29. Nonvolatile Memory Programming ............................................................................... 374
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 5
Contents
Section A: Overview 17
1. Introduction 18
1.1 Top Level Architecture............................................................................................................18
1.2 Features..................................................................................................................................19
1.3 CPU System ...........................................................................................................................19
1.3.1 Processor...............................................................................................................19
1.3.2 Interrupt Controller .................................................................................................19
1.3.3 Direct Memory Access ...........................................................................................19
1.3.4 Cryptographic Accelerator (CRYPTO) ...................................................................19
1.3.5 Memory ..................................................................................................................20
1.3.5.1 Flash.......................................................................................................20
1.3.5.2 SRAM .....................................................................................................20
1.4 System-Wide Resources ........................................................................................................20
1.4.1 Clocking System ....................................................................................................20
1.4.2 Power System........................................................................................................20
1.4.3 GPIO ......................................................................................................................20
1.4.4 Watchdog Timers ...................................................................................................21
1.5 Fixed-Function Digital .............................................................................................................21
1.5.1 Timer/Counter/PWM Block.....................................................................................21
1.5.2 Serial Communication Blocks ................................................................................21
1.5.3 Controller Area Network (CAN)..............................................................................21
1.5.4 LCD Segment Drive ...............................................................................................21
1.5.5 I2S Master..............................................................................................................21
1.6 Analog System........................................................................................................................22
1.6.1 SAR ADC ...............................................................................................................22
1.6.2 Continuous Time Block mini (CTBm) .....................................................................22
1.6.3 Low-Power Comparators .......................................................................................22
1.7 Special Function Peripherals ..................................................................................................22
1.7.1 CapSense ..............................................................................................................22
1.8 Program and Debug ...............................................................................................................22
1.9 Device Feature Summary .......................................................................................................23
2. Getting Started 24
2.1 Support ...................................................................................................................................24
2.2 Development Ecosystem ........................................................................................................24
2.2.1 PSoC 4 MCU Resources .......................................................................................24
2.2.2 ModusToolbox™ Software .....................................................................................25
3. Document Construction 26
3.1 Major Sections ........................................................................................................................26
3.2 Documentation Conventions...................................................................................................26
3.2.1 Register Conventions.............................................................................................26
3.2.2 Numeric Naming ....................................................................................................26
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 6
3.2.3 Units of Measure....................................................................................................27
3.2.4 Acronyms ...............................................................................................................28
Section B: CPU System 30
4. Cortex-M0+ CPU 31
4.1 Features..................................................................................................................................31
4.2 Block Diagram ........................................................................................................................32
4.3 How It Works ..........................................................................................................................32
4.4 Address Map...........................................................................................................................32
4.5 Registers.................................................................................................................................33
4.6 Operating Modes ....................................................................................................................34
4.7 Instruction Set.........................................................................................................................35
4.7.1 Address Alignment .................................................................................................36
4.7.2 Memory Endianness ..............................................................................................36
4.8 Systick Timer ..........................................................................................................................36
4.9 Debug .....................................................................................................................................36
5. DMA Controller Modes 37
5.1 Block Diagram Description .....................................................................................................37
5.1.1 Trigger Sources and Multiplexing ..........................................................................38
5.1.1.1 Trigger Multiplexer..................................................................................38
5.1.1.2 Creating Software Triggers ....................................................................41
5.1.2 Pending Triggers....................................................................................................41
5.1.3 Output Triggers ......................................................................................................41
5.1.4 Channel Prioritization.............................................................................................41
5.1.5 Data Transfer Engine .............................................................................................41
5.2 Descriptors..............................................................................................................................42
5.2.1 Address Configuration ...........................................................................................42
5.2.2 Transfer Size..........................................................................................................44
5.2.3 Descriptor Chaining ...............................................................................................44
5.2.4 Transfer Mode........................................................................................................45
5.2.4.1 Single Data Element Per Trigger (OPCODE 0)......................................45
5.2.4.2 Entire Descriptor Per Trigger (OPCODE 1)............................................46
5.2.4.3 Entire Descriptor Chain Per Trigger (OPCODE 2) .................................47
5.3 Operation and Timing .............................................................................................................48
5.4 Arbitration ...............................................................................................................................50
5.5 Register Lists ..........................................................................................................................51
6. Interrupts 52
6.1 Features..................................................................................................................................52
6.2 How It Works ..........................................................................................................................52
6.3 Interrupts and Exceptions - Operation ....................................................................................53
6.3.1 Interrupt/Exception Handling..................................................................................53
6.3.2 Level and Pulse Interrupts .....................................................................................54
6.3.3 Exception Vector Table ..........................................................................................55
6.4 Exception Sources..................................................................................................................56
6.4.1 Reset Exception.....................................................................................................56
6.4.2 Non-Maskable Interrupt (NMI) Exception...............................................................56
6.4.3 HardFault Exception ..............................................................................................56
6.4.4 Supervisor Call (SVCall) Exception .......................................................................56
6.4.5 PendSV Exception .................................................................................................57
6.4.6 SysTick Exception..................................................................................................57
6.5 Interrupt Sources ....................................................................................................................57
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 7
6.6 Exception Priority....................................................................................................................58
6.7 Enabling and Disabling Interrupts...........................................................................................59
6.8 Exception States.....................................................................................................................59
6.8.1 Pending Exceptions ...............................................................................................60
6.9 Stack Usage for Exceptions....................................................................................................60
6.10 Interrupts and Low-Power Modes...........................................................................................61
6.11 Exceptions – Initialization and Configuration ..........................................................................61
6.12 Registers.................................................................................................................................61
6.13 Associated Documents ...........................................................................................................62
7. Device Security 63
7.1 Features..................................................................................................................................63
7.2 How It Works ..........................................................................................................................63
7.2.1 Device Security ......................................................................................................63
7.2.2 Flash Security ........................................................................................................64
Section C: System Resources Subsystem (SRSS) 65
8. I/O System 66
8.1 Features..................................................................................................................................66
8.2 GPIO Interface Overview........................................................................................................67
8.3 I/O Cell Architecture................................................................................................................68
8.3.1 Digital Input Buffer .................................................................................................69
8.3.2 Digital Output Driver...............................................................................................69
8.3.2.1 Drive Modes ...........................................................................................69
8.3.2.2 Slew Rate Control ..................................................................................71
8.4 High-Speed I/O Matrix ............................................................................................................72
8.5 Smart I/O ................................................................................................................................73
8.5.1 Overview ................................................................................................................73
8.5.2 Block Components.................................................................................................74
8.5.2.1 Clock and Reset .....................................................................................74
8.5.2.2 Synchronizer ..........................................................................................75
8.5.2.3 Lookup Table (LUT3) .............................................................................76
8.5.2.4 Data Unit ................................................................................................79
8.5.3 Routing...................................................................................................................82
8.5.4 Operation ...............................................................................................................83
8.6 I/O State on Power Up............................................................................................................84
8.7 Behavior in Low-Power Modes ...............................................................................................84
8.8 Interrupt ..................................................................................................................................84
8.9 Peripheral Connections ..........................................................................................................86
8.9.1 Firmware Controlled GPIO.....................................................................................86
8.9.2 Analog I/O ..............................................................................................................86
8.9.3 LCD Drive ..............................................................................................................86
8.9.4 CapSense ..............................................................................................................86
8.9.5 Serial Communication Block (SCB) .......................................................................87
8.9.6 Timer, Counter, and Pulse Width Modulator (TCPWM) Block................................87
8.10 Registers.................................................................................................................................87
9. Clocking System 88
9.1 Block Diagram ........................................................................................................................88
9.2 Clock Sources.........................................................................................................................89
9.2.1 Internal Main Oscillator (IMO) ................................................................................89
9.2.1.1 Startup Behavior.....................................................................................90
9.2.1.2 Programming Clock (36-MHz)................................................................90
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 8
9.2.2 Internal Low-speed Oscillator (ILO) .......................................................................90
9.2.3 External Clock (EXTCLK) ......................................................................................91
9.2.4 External Crystal Oscillator (ECO) ..........................................................................91
9.2.4.1 ECO Trimming........................................................................................91
9.2.5 Phase-Locked Loop (PLL) .....................................................................................92
9.2.6 Watch Crystal Oscillator (WCO).............................................................................92
9.3 Clock Supervision ...................................................................................................................93
9.3.1 Clock Supervision Block (CSV)..............................................................................93
9.3.2 Clock Supervision Interrupt (CSI) ..........................................................................93
9.3.3 Programmable Delay Block (PGM_DELAY) ..........................................................93
9.4 Clock Distribution....................................................................................................................93
9.4.1 HFCLK and PLL Input Selection ............................................................................94
9.4.2 High-Frequency Clock (HFCLK) Input Selection ...................................................95
9.4.3 Low-Frequency (LFCLK) Input Selection...............................................................95
9.4.4 System Clock (SYSCLK) Prescaler Configuration.................................................95
9.4.5 Peripheral Clock Divider Configuration ..................................................................95
9.5 Low-Power Mode Operation ...................................................................................................98
9.6 Register List............................................................................................................................98
10. Power Supply and Monitoring 99
10.1 Block Diagram ........................................................................................................................99
10.2 Power Supply Scenarios.......................................................................................................100
10.2.1 Single 1.8 V to 5.5 V Unregulated Supply............................................................100
10.2.2 Direct 1.71 V to 1.89 V Regulated Supply ...........................................................101
10.3 How It Works ........................................................................................................................101
10.3.1 Regulator Summary .............................................................................................101
10.3.1.1 Active Digital Regulator ........................................................................101
10.3.1.2 Deep-Sleep Regulator..........................................................................101
10.4 Voltage Monitoring................................................................................................................102
10.4.1 Power-on-Reset (POR)........................................................................................102
10.4.1.1 Brownout-Detect (BOD) .......................................................................102
10.5 Register List .........................................................................................................................102
11. Chip Operational Modes 103
11.1 Boot ......................................................................................................................................103
11.2 User ......................................................................................................................................103
11.3 Privileged ..............................................................................................................................103
11.4 Debug ...................................................................................................................................103
12. Power Modes 104
12.1 Active Mode ..........................................................................................................................105
12.2 Sleep Mode...........................................................................................................................105
12.3 Deep-Sleep Mode.................................................................................................................105
12.4 Power Mode Summary .........................................................................................................106
12.5 Low-Power Mode Entry and Exit ..........................................................................................107
12.6 Register List..........................................................................................................................107
13. Watchdog Timer 108
13.1 Features................................................................................................................................108
13.2 Block Diagram ......................................................................................................................108
13.3 How It Works ........................................................................................................................109
13.3.1 Enabling and Disabling WDT ...............................................................................109
13.3.2 WDT Interrupts and Low-Power Modes...............................................................110
13.3.3 WDT Reset Mode ................................................................................................110
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 9
13.4 Additional Timers ..................................................................................................................110
13.4.1 WDT0 and WDT1................................................................................................. 111
13.4.2 WDT2................................................................................................................... 111
13.4.3 Cascading ............................................................................................................ 111
13.5 Register List..........................................................................................................................112
14. Trigger Multiplexer Block 113
14.1 Features................................................................................................................................113
14.2 Architecture...........................................................................................................................113
14.2.1 Trigger Multiplexer Group ....................................................................................114
14.2.2 Software Triggers.................................................................................................116
14.3 Register List..........................................................................................................................116
15. Reset System 117
15.1 Reset Sources ......................................................................................................................117
15.1.1 Power-on Reset ...................................................................................................117
15.1.2 Brownout Reset ...................................................................................................117
15.1.3 Watchdog Reset ..................................................................................................117
15.1.4 Software Initiated Reset.......................................................................................117
15.1.5 External Reset .....................................................................................................118
15.1.6 Protection Fault Reset ......................................................................................... 118
15.2 Identifying Reset Sources.....................................................................................................118
15.3 Register List..........................................................................................................................118
Section D: Digital System 119
16. Serial Communications Block (SCB) 120
16.1 Features................................................................................................................................120
16.2 Architecture...........................................................................................................................120
16.2.1 Buffer Modes........................................................................................................120
16.2.1.1 FIFO Mode ...........................................................................................120
16.2.1.2 EZ Mode...............................................................................................121
16.2.2 Clocking Modes ...................................................................................................121
16.3 Serial Peripheral Interface (SPI) ...........................................................................................122
16.3.1 Features...............................................................................................................122
16.3.2 General Description .............................................................................................123
16.3.3 SPI Modes of Operation.......................................................................................124
16.3.3.1 Motorola SPI.........................................................................................124
16.3.3.2 Texas Instruments SPI .........................................................................126
16.3.3.3 National Semiconductors SPI...............................................................128
16.3.4 SPI Buffer Modes.................................................................................................129
16.3.4.1 FIFO Mode ...........................................................................................129
16.3.4.2 EZSPI Mode .........................................................................................130
16.3.5 Clocking and Oversampling .................................................................................132
16.3.5.1 Clock Modes.........................................................................................132
16.3.5.2 Using SPI Master to Clock Slave .........................................................134
16.3.5.3 Oversampling and Bit Rate ..................................................................134
16.3.6 Enabling and Initializing SPI ................................................................................135
16.3.7 I/O Pad Connection..............................................................................................136
16.3.7.1 SPI Master............................................................................................136
16.3.7.2 SPI Slave..............................................................................................137
16.3.7.3 Glitch Avoidance at System Reset .......................................................138
16.3.8 SPI Registers .......................................................................................................138
16.4 UART ....................................................................................................................................139
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 10
16.4.1 Features...............................................................................................................139
16.4.2 General Description .............................................................................................140
16.4.3 UART Modes of Operation...................................................................................140
16.4.3.1 Standard Protocol.................................................................................140
16.4.3.2 UART Local Interconnect Network (LIN) Mode ....................................145
16.4.3.3 SmartCard (ISO7816) ..........................................................................149
16.4.3.4 Infrared Data Association (IrDA) ..........................................................150
16.4.4 Clocking and Oversampling .................................................................................150
16.4.5 Enabling and Initializing the UART ......................................................................151
16.4.6 I/O Pad Connection..............................................................................................151
16.4.6.1 Standard UART Mode ..........................................................................151
16.4.6.2 SmartCard Mode ..................................................................................152
16.4.6.3 LIN Mode..............................................................................................152
16.4.6.4 IrDA Mode ............................................................................................153
16.4.7 UART Registers ...................................................................................................153
16.5 Inter Integrated Circuit (I2C) .................................................................................................154
16.5.1 Features...............................................................................................................154
16.5.2 General Description .............................................................................................154
16.5.3 External Electrical Connections ...........................................................................155
16.5.4 Terms and Definitions ..........................................................................................156
16.5.4.1 Clock Stretching ...................................................................................156
16.5.4.2 Bus Arbitration......................................................................................156
16.5.5 I2C Modes of Operation.......................................................................................157
16.5.5.1 Write Transfer.......................................................................................157
16.5.5.2 Read Transfer ......................................................................................158
16.5.6 I2C Buffer Modes .................................................................................................159
16.5.6.1 FIFO Mode ...........................................................................................159
16.5.6.2 EZI2C Mode .........................................................................................160
16.5.7 Clocking and Oversampling .................................................................................162
16.5.7.1 Glitch Filtering ......................................................................................163
16.5.7.2 Oversampling and Bit Rate ..................................................................164
16.5.8 Enabling and Initializing the I2C...........................................................................166
16.5.8.1 Configuring for I2C FIFO Mode ............................................................166
16.5.8.2 Configuring for EZ Mode ......................................................................166
16.5.9 I/O Pad Connections............................................................................................167
16.5.10 I2C Registers .......................................................................................................168
16.6 SCB Interrupts ......................................................................................................................169
16.6.1 SPI Interrupts .......................................................................................................170
16.6.2 UART Interrupts ...................................................................................................174
16.6.3 I2C Interrupts .......................................................................................................177
17. CAN FD Controller 179
17.1 Overview...............................................................................................................................179
17.1.1 Features...............................................................................................................179
17.1.2 Features Not Supported.......................................................................................180
17.2 Configuration ........................................................................................................................180
17.2.1 Block Diagram......................................................................................................180
17.2.2 Clock Sources......................................................................................................180
17.2.3 Interrupt Lines ......................................................................................................180
17.3 Functional Description ..........................................................................................................182
17.3.1 Operation Modes .................................................................................................182
17.3.1.1 Software Initialization ...........................................................................182
17.3.1.2 Normal Operation .................................................................................183
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 11
17.3.1.3 CAN FD Operation ...............................................................................183
17.3.1.4 Transmitter Delay Compensation.........................................................184
17.3.1.5 Restricted Operation mode ..................................................................185
17.3.1.6 Bus Monitoring Mode ...........................................................................186
17.3.1.7 Disable Automatic Retransmission.......................................................186
17.3.1.8 Power Down (Sleep Mode) ..................................................................187
17.3.1.9 Test Mode ............................................................................................187
17.3.1.10 Application Watchdog...........................................................................188
17.3.2 Timestamp Generation ........................................................................................188
17.3.3 Timeout Counter ..................................................................................................189
17.3.4 RX Handling.........................................................................................................189
17.3.4.1 Acceptance Filtering.............................................................................189
17.3.4.2 RX FIFOs .............................................................................................193
17.3.4.3 Dedicated RX Buffers...........................................................................195
17.3.4.4 Debug on CAN Support........................................................................196
17.3.5 TX Handling .........................................................................................................197
17.3.5.1 Transmit Pause ....................................................................................198
17.3.5.2 Dedicated TX Buffers ...........................................................................198
17.3.5.3 TX FIFO................................................................................................199
17.3.5.4 TX Queue .............................................................................................199
17.3.5.5 Mixed Dedicated TX Buffers/TX FIFO..................................................200
17.3.5.6 Mixed Dedicated TX Buffers/TX Queue ...............................................200
17.3.5.7 Transmit Cancellation...........................................................................201
17.3.5.8 TX Event Handling ...............................................................................201
17.3.6 FIFO Acknowledge Handling ...............................................................................201
17.3.7 Configuring the CAN Bit Timing ...........................................................................202
17.3.7.1 CAN Bit Timing.....................................................................................202
17.3.7.2 CAN Bit Rates ......................................................................................204
17.4 Message RAM ......................................................................................................................205
17.4.1 Message RAM Configuration ...............................................................................205
17.4.2 RX Buffer and FIFO Element ...............................................................................206
17.4.3 TX Buffer Element................................................................................................208
17.4.4 TX Event FIFO Element.......................................................................................210
17.4.5 Standard Message ID Filter Element ...................................................................212
17.4.6 Extended Message ID Filter Element ..................................................................213
17.4.7 Trigger Memory Element .....................................................................................215
17.4.8 Message RAM OFF .............................................................................................217
17.4.9 RAM Watchdog (RWD) ........................................................................................217
17.4.10 Address Error.......................................................................................................217
17.5 TTCAN Operation .................................................................................................................218
17.5.1 Reference Message.............................................................................................218
17.5.1.1 Level 1..................................................................................................218
17.5.1.2 Level 2..................................................................................................218
17.5.1.3 Level 0..................................................................................................219
17.5.2 TTCAN Configuration...........................................................................................219
17.5.2.1 TTCAN Timing......................................................................................219
17.5.2.2 Message Scheduling ............................................................................220
17.5.2.3 Trigger Memory ....................................................................................221
17.5.2.4 TTCAN Schedule Initialization..............................................................225
17.5.3 TTCAN Gap Control.............................................................................................226
17.5.4 Stop Watch ..........................................................................................................226
17.5.5 Local Time, Cycle Time, Global Time, and External Clock Synchronization........227
17.5.6 Synchronization Triggers .....................................................................................229
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 12
17.5.7 TTCAN Error Level ..............................................................................................229
17.5.8 TTCAN Message Handling ..................................................................................230
17.5.8.1 Reference Message .............................................................................230
17.5.8.2 Message Reception..............................................................................231
17.5.8.3 Message Transmission ........................................................................231
17.5.9 TTCAN Interrupt and Error Handling ...................................................................233
17.5.10 Level 0 .................................................................................................................233
17.5.10.1 Synchronizing.......................................................................................234
17.5.10.2 Handling Error Levels...........................................................................234
17.5.10.3 Master Slave Relation ..........................................................................235
17.5.11 Synchronization to External Time Schedule ........................................................235
17.6 Setup Procedures .................................................................................................................236
17.6.1 General Program Flow.........................................................................................236
17.6.2 Clock Stop Request .............................................................................................236
17.6.3 Message RAM OFF Operation ............................................................................237
17.6.4 Message RAM ON Operation ..............................................................................237
17.6.5 Consolidated Interrupt Handling ..........................................................................237
17.6.6 Procedures Specific to M_TTCAN Channel.........................................................238
17.6.6.1 CAN Bus Configuration ........................................................................239
17.6.6.2 Message RAM Configuration ...............................................................239
17.6.6.3 Interrupt Configuration..........................................................................242
17.6.6.4 Transmit Frame Configuration..............................................................243
17.6.6.5 Interrupt Handling.................................................................................244
18. Timer, Counter, and PWM (TCPWM) 249
18.1 Features................................................................................................................................249
18.2 Architecture...........................................................................................................................250
18.2.1 Enabling and Disabling Counters in a TCPWM Block .........................................250
18.2.2 Clocking ...............................................................................................................250
18.2.2.1 Clock Prescaling...................................................................................250
18.2.2.2 Count Input...........................................................................................251
18.2.3 Trigger Inputs.......................................................................................................251
18.2.4 Trigger Outputs ....................................................................................................254
18.2.5 Interrupts..............................................................................................................254
18.2.6 PWM Outputs.......................................................................................................254
18.2.7 Power Modes .......................................................................................................255
18.3 Operation Modes ..................................................................................................................255
18.3.1 Timer Mode..........................................................................................................256
18.3.1.1 Configuring Counter for Timer Mode....................................................262
18.3.2 Capture Mode ......................................................................................................262
18.3.2.1 Configuring Counter for Capture Mode ................................................265
18.3.3 Quadrature Decoder Mode ..................................................................................265
18.3.3.1 Configuring Counter for Quadrature Mode...........................................269
18.3.4 Pulse Width Modulation Mode .............................................................................269
18.3.4.1 Asymmetric PWM.................................................................................277
18.3.4.2 Configuring Counter for PWM Mode ....................................................278
18.3.5 Pulse Width Modulation with Dead Time Mode ...................................................279
18.3.5.1 Configuring Counter for PWM with Dead Time Mode ..........................281
18.3.6 Pulse Width Modulation Pseudo-Random Mode (PWM_PR)..............................281
18.3.6.1 Configuring Counter for Pseudo-Random PWM Mode ........................284
18.4 TCPWM Registers ................................................................................................................284
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 13
19. LCD Direct Drive 285
19.1 Features................................................................................................................................285
19.2 LCD Segment Drive Overview..............................................................................................285
19.2.1 Drive Modes.........................................................................................................286
19.2.1.1 PWM Drive ...........................................................................................286
19.2.2 Recommended Bias Settings...............................................................................291
19.2.3 Digital Contrast Control........................................................................................291
19.3 Block Diagram ......................................................................................................................292
19.3.1 How it Works........................................................................................................292
19.3.2 High-Speed Master Generator.............................................................................292
19.3.3 LCD Pin Logic ......................................................................................................293
19.3.4 Display Data Registers ........................................................................................293
19.4 Register List .........................................................................................................................293
20. Inter-IC Sound Bus 294
20.1 Features................................................................................................................................294
20.2 Architecture...........................................................................................................................294
20.3 Digital Audio Interface Formats ............................................................................................295
20.3.1 Standard I2S Format............................................................................................295
20.3.2 Left Justified (LJ) Format .....................................................................................297
20.3.3 Time Division Multiplexed (TDM) Format.............................................................297
20.4 Clocking Features.................................................................................................................298
20.5 FIFO Buffer ...........................................................................................................................299
20.6 Interrupt Support...................................................................................................................300
21. CRYPTO 301
21.1 Features................................................................................................................................301
21.2 Overview...............................................................................................................................301
21.3 Trigger Interface ...................................................................................................................302
21.4 Memory Buffer ......................................................................................................................302
21.4.1 Access Control.....................................................................................................302
21.5 Pseudo Random Number Generator ....................................................................................303
21.5.1 Configuring PRNG ...............................................................................................304
21.6 True Random Number Generator (TRNG) ...........................................................................304
21.7 Advance Encryption Standard (AES)....................................................................................308
21.7.1 Modes of Operation .............................................................................................309
21.7.2 Configuring AES...................................................................................................310
21.8 SHA ......................................................................................................................................310
21.8.1 Configuring SHA .................................................................................................. 311
21.9 CRC ......................................................................................................................................312
21.9.1 Configuring CRC..................................................................................................313
21.10 Power Modes........................................................................................................................313
Section E: Analog System 314
22. SAR ADC 315
22.1 Features................................................................................................................................315
22.2 Block Diagram ......................................................................................................................316
22.3 How it Works.........................................................................................................................317
22.3.1 SAR ADC Core ....................................................................................................317
22.3.1.1 Single-ended and Differential Mode .....................................................317
22.3.1.2 Input Range..........................................................................................317
22.3.1.3 Result Data Format ..............................................................................318
22.3.1.4 Negative Input Selection ......................................................................318
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 14
22.3.1.5 Resolution ............................................................................................319
22.3.1.6 Acquisition Time ...................................................................................319
22.3.1.7 SAR ADC Clock ...................................................................................320
22.3.1.8 SAR ADC Timing..................................................................................321
22.3.2 SARMUX..............................................................................................................321
22.3.3 SARREF ..............................................................................................................323
22.3.3.1 Reference Options ...............................................................................323
22.3.3.2 Bypass Capacitors ...............................................................................323
22.3.3.3 Input Range versus Reference.............................................................324
22.3.4 SARSEQ ..............................................................................................................324
22.3.4.1 Averaging .............................................................................................325
22.3.4.2 Range Detection...................................................................................325
22.3.4.3 Double Buffer .......................................................................................325
22.3.4.4 Injection Channel..................................................................................326
22.3.5 SAR Interrupts .....................................................................................................328
22.3.5.1 End-of-Scan Interrupt (EOS_INTR)......................................................328
22.3.5.2 Overflow Interrupt.................................................................................328
22.3.5.3 Collision Interrupt .................................................................................328
22.3.5.4 Injection End-of-Conversion Interrupt (INJ_EOC_INTR)......................329
22.3.5.5 Range Detection Interrupts ..................................................................329
22.3.5.6 Saturate Detection Interrupts ...............................................................329
22.3.5.7 Interrupt Cause Overview.....................................................................329
22.3.6 Trigger..................................................................................................................330
22.3.6.1 External Trigger Configuration .............................................................331
22.3.7 SAR ADC Status ..................................................................................................332
22.3.8 Low-Power Mode .................................................................................................332
22.3.9 System Operation ................................................................................................333
22.3.9.1 SARMUX Analog Routing ....................................................................333
22.3.9.2 Global SARSEQ Configuration.............................................................334
22.3.9.3 Channel Configurations........................................................................335
22.3.9.4 Channel Enables ..................................................................................335
22.3.9.5 Interrupt Masks.....................................................................................336
22.3.9.6 Trigger ..................................................................................................336
22.3.9.7 Retrieve Data after Each Interrupt........................................................336
22.3.9.8 Injection Conversions ...........................................................................336
22.3.10 Temperature Sensor Configuration ......................................................................337
22.4 Registers...............................................................................................................................338
23. Low-Power Comparator 339
23.1 Features................................................................................................................................339
23.2 Block Diagram ......................................................................................................................339
23.3 How It Works ........................................................................................................................340
23.3.1 Input Configuration...............................................................................................340
23.3.2 Output and Interrupt Configuration ......................................................................340
23.3.3 Power Mode and Speed Configuration ................................................................341
23.3.4 Hysteresis ............................................................................................................342
23.3.5 Wakeup from Low-Power Modes .........................................................................342
23.3.6 Comparator Clock ................................................................................................343
23.3.7 Offset Trim ...........................................................................................................343
23.4 Register Summary ...............................................................................................................343
24. Continuous Time Block mini (CTBm) 344
24.1 Features................................................................................................................................344
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 15
24.2 Block Diagram ......................................................................................................................345
24.3 How It Works ........................................................................................................................346
24.3.1 Power Mode Configuration ..................................................................................346
24.3.2 Output Strength Configuration .............................................................................346
24.3.3 Compensation......................................................................................................347
24.3.4 Switch Control......................................................................................................348
24.3.4.1 Input Configuration ...............................................................................348
24.3.4.2 Output Configuration ............................................................................348
24.3.4.3 Comparator Mode ................................................................................349
24.3.4.4 Comparator Configuration ....................................................................349
24.3.4.5 Comparator Interrupt ............................................................................350
24.3.4.6 Deep-Sleep Mode Operation................................................................350
24.4 Register Summary ................................................................................................................352
25. CapSense 353
26. Temperature Sensor 354
26.1 Features................................................................................................................................354
26.2 How it Works.........................................................................................................................354
26.3 Temperature Sensor Configuration ......................................................................................356
26.4 Algorithm...............................................................................................................................356
26.5 Registers...............................................................................................................................356
27. Analog Routing 357
27.1 Features................................................................................................................................357
27.2 Architecture...........................................................................................................................357
27.2.1 Analog Interconnection ........................................................................................359
27.2.2 AMUXBUS Splitting .............................................................................................364
27.3 Register List..........................................................................................................................364
Section F: Program and Debug 365
28. Program and Debug Interface 366
28.1 Features................................................................................................................................366
28.2 Functional Description ..........................................................................................................366
28.3 Serial Wire Debug (SWD) Interface......................................................................................367
28.3.1 SWD Timing Details .............................................................................................368
28.3.2 ACK Details..........................................................................................................368
28.3.3 Turnaround (Trn) Period Details ..........................................................................369
28.4 Cortex-M0+ Debug and Access Port (DAP) .........................................................................369
28.4.1 Debug Port (DP) Registers ..................................................................................369
28.4.2 Access Port (AP) Registers ................................................................................370
28.5 Programming the PSoC 4 Device.........................................................................................371
28.5.1 SWD Port Acquisition...........................................................................................371
28.5.1.1 SWD Port Acquire Sequence ...............................................................371
28.5.2 SWD Programming Mode Entry...........................................................................371
28.5.3 SWD Programming Routines Executions ............................................................371
28.6 PSoC 4 SWD Debug Interface .............................................................................................372
28.6.1 Debug Control and Configuration Registers ........................................................372
28.6.2 Breakpoint Unit (BPU)..........................................................................................372
28.6.3 Data Watchpoint (DWT) .......................................................................................372
28.6.4 Debugging the PSoC 4 Device ............................................................................373
28.7 Registers...............................................................................................................................373
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 16
29. Nonvolatile Memory Programming 374
29.1 Features................................................................................................................................374
29.2 Functional Description ..........................................................................................................374
29.3 System Call Implementation .................................................................................................375
29.4 Blocking and Non-Blocking System Calls.............................................................................375
29.4.1 Performing a System Call ....................................................................................376
29.5 System Calls.........................................................................................................................377
29.5.1 Silicon ID..............................................................................................................378
29.5.2 Configure Clock ...................................................................................................378
29.5.3 Load Flash Bytes .................................................................................................379
29.5.4 Write Row ............................................................................................................380
29.5.5 Program Row .......................................................................................................381
29.5.6 Erase All...............................................................................................................382
29.5.7 Checksum ............................................................................................................383
29.5.8 Write Protection ...................................................................................................384
29.5.9 Non-Blocking Write Row ......................................................................................385
29.5.10 Non-Blocking Program Row.................................................................................386
29.5.11 Resume Non-Blocking .........................................................................................387
29.6 System Call Status ...............................................................................................................388
29.7 Non-Blocking System Call Pseudo Code .............................................................................389
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 17
Section A: Overview
This section encompasses the following chapters:
■Introduction chapter on page 18
■Getting Started chapter on page 24
■Document Construction chapter on page 26
Document Revision History
Revision Issue Date Description of Change
** July 16, 2021 Initial version of PSoC 4100S Max TRM.
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 18
1. Introduction
PSoC® 4 is a programmable embedded system controller with an Arm® Cortex®-M0+ CPU. PSoC 4100S Max device is an
enhanced version of the PSoC 4000 family and is upward-compatible with larger members of PSoC 4.
PSoC 4 devices have these characteristics:
■High-performance, 32-bit single-cycle Cortex-M0+ CPU core
■High-performance analog system
■Self and Mutual Capacitive touch sensing (CapSense®)
■Configurable Timer/Counter/PWM block
■Configurable analog blocks for analog signal conditioning
■Configurable communication block with I2C, SPI, and UART operating modes
■Low-power operating modes – Sleep and Deep-Sleep
This document describes each functional block of the PSoC 4100S Max device in detail. This information will help designers
to create system-level designs.
1.1 Top Level Architecture
Figure 1-1 shows the major components of the PSoC 4100S Max architecture.
Figure 1-1. PSoC 4100S Max Block Diagram
Peripherals
CPU Subsystem
System Interconnect (Single Layer AHB)
PSoC 4100S
Max
IOSS GPIO
(13x ports)
I/O Subsystem
Peripheral Interconnect (MMIO)
PCLK
FLASH
384 KB
Read Accelerator
SPCIF
32-bit
AHB-Lite
Up to 84x GPIOs
Deep Sleep
Active/Sleep
Power Modes
Digital DFT
Test
Analog DFT
System Resources
Lite
Power
Clock
Reset
Clock Control
IMO
Sleep Control
REFPOR
Reset Control
TestMode Entry
WIC
XRES
WDT
ILO
PWRSYS
8x TCPWM
WCO
2x LP Comparator
SAR ADC
(12-bit)
x1
1x CTBm
2x Opamp
Programmable
Analog
SARMUX
High Speed I/O Matrix and 3x Smart I/O
SWD/TC, MTB
NVIC, IRQMUX, MPU
Cortex
M0+
48 MHz
FAST MUL
LCD
2x CapSense
EXCO (w PLL)
CAN FD
DataWire/
DMA
Initiator/MMIO
CRYPTO
(AES, SHA, TRNG, PRNG, CRC)
I2S Master TX
5x SCB-
I2C/SPI/UART
ROM
8 KB
ROM Controller
SRAM
32 KB
SRAM Controller
PSoC 4100S Max: PSoC 4 Architecture TRM, Document No. 002-32818 Rev. ** 19
Introduction
1.2 Features
The PSoC 4100S Max device has these major components:
■32-bit Cortex-M0+ CPU with single-cycle multiply, delivering up to 0.9 DMIPS/MHz
■Up to 384 KB flash and 32 KB SRAM
■Direct memory access (DMA)
■Cryptographic Accelerator with symmetric cryptography (AES), Hash (SHA), True Random Number Generation and CRC
capabilities.
■Up to eight center-aligned pulse-width modulator (PWM) with complementary, dead-band programmable outputs
■One watchdog timer and three general-purpose timers with interrupt capability
■Twelve-bit SAR ADC (with a sampling rate of 1 Msps) with hardware sequencing for multiple channels
■Up to two opamps that can be used for analog signal conditioning and as a comparator. Opamps can operate in Deep
Sleep low-power mode.
■Two low-power comparators
■Up to five serial communication blocks (SCB) that can work as SPI, UART, I2C, and local interconnect network (LIN) slave
serial communication channels
■One controller area network (CAN FD) block
■Three Smart I/O blocks, which provides the ability to perform Boolean functions in the I/O signal path
■Two CapSense (Fifth-Generation) blocks with synchronized sampling.
■Segment LCD direct drive
■Low-power operating modes: Sleep and Deep-Sleep
■Programming and debugging system through serial wire debug (SWD)
■Fully supported by ModusToolbox IDE tool
■One I2S TX Mode Master block
1.3 CPU System
1.3.1 Processor
The heart of the PSoC is a 32-bit Cortex-M0+ CPU core running up to 48 MHz. It is optimized for low-power operation with
extensive clock gating. It uses 16-bit instructions and executes a subset of the Thumb-2 instruction set. This instruction set
enables fully compatible binary upward migration of the code to higher performance processors such as Cortex M3 and M4.
The CPU has a hardware multiplier that provides a 32-bit result in one cycle.
1.3.2 Interrupt Controller
The CPU subsystem includes a nested vectored interrupt controller (NVIC) with 32 interrupt inputs and a wakeup interrupt
controller (WIC), which can wake the processor from Deep-Sleep mode.
1.3.3 Direct Memory Access
The DMA engine is capable of independent data transfers anywhere within the memory map (peripheral-to-peripheral and
peripheral-to/from-memory) with a programmable descriptor chain.
1.3.4 Cryptographic Accelerator (CRYPTO)
The CRYPTO Accelerator block will support 128-bit AES, all SHA modes, True Random Number and Pseudo Random
Number Generator function, and a CRC function. It will incorporate a 512 byte instruction and operand storage buffer.
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