NXP S08JS Reference guide

HCS08

Microcontrollers

freescale.com

MC9S08JS16

MC9S08JS8

MC9S08JS16L

MC9S08JS8L

Reference Manual

MC9S08JS16RM

Rev. 4

4/2009

Related Documentation:

• MC9S08JS16 (Data Sheet)

Contains pin assignments and diagrams, all electrical

specifications, and mechanical drawing outlines.

Find the most current versions of all documents at:

http://www.freescale.com

8-Bit HCS08 Central Processor Unit (CPU)

• 48 MHz HCS08 CPU (central processor

unit)

• 24 MHz internal bus frequency

• HC08 instruction set with added BGND

instruction

• Support for up to 32 interrupt/reset sources

Memory Options

• Up to 16 KB of on-chip in-circuit

programmable flash memory with block

protection and security options

• Up to 512 bytes of on-chip RAM

• 256 bytes of USB RAM

Clock Source Options

• Clock source options include crystal,

resonator, external clock

• MCG (multi-purpose clock generator) —

PLL and FLL; internal reference clock with

trim adjustment

System Protection

• Optional computer operating properly

(COP) reset with option to run from

independent 1 kHz internal clock source or

the bus clock

• Low-voltage detection

• Illegal opcode detection with reset

• Illegal address detection with reset

Power-Saving Modes

• Wait plus two stops

USB Bootload

• Mass erase entire flash array

• Partial erase flash array — erase all flash

blocks except for the first 1 KB of flash

• Program flash

Peripherals

• USB — USB 2.0 full-speed (12 Mbps) with

dedicated on-chip 3.3 V regulator and

transceiver; supports endpoint 0 and up to 6

additional endpoints

• SPI — One 8- or 16-bit selectable serial

peripheral interface module with a receive

data buffer hardware match function

• SCI — One serial communication interface

module with optional 13-bit break. Full

duplex non-return to zero (NRZ); LIN

master extended break generation; LIN

slave extended break detection; wakeup on

active edge

• MTIM — One 8-bit modulo counter with

8-bit prescaler and overflow interrupt

• TPM — One 2-channel 16-bit

timer/pulse-width modulator (TPM)

module: selectable input capture, output

compare, and edge-aligned PWM capability

on each channel. Timer module may be

configured for buffered, centered PWM

(CPWM) on all channels

• KBI — 8-pin keyboard interrupt module

• RTC — Real-time counter with binary- or

decimal-based prescaler

• CRC — Hardware CRC generator circuit

using 16-bit shift register; CRC16-CCITT

compliancy with x

16

+x

12

+x5+1 polynomial

Input/Output

• Software selectable pullups on ports when

used as inputs

• Software selectable slew rate control on

ports when used as outputs

• Software selectable drive strength on ports

when used as outputs

• Master reset pin and power-on reset (POR)

• Internal pullup on RESET, IRQ, and

BKGD/MS pins to reduce customer system

cost

Package Options

• 24-pin quad flat no-lead (QFN)

• 20-pin small outline IC package (SOIC)

MC9S08JS16 Features

MC9S08JS16 MCU Series Reference Manual

Covers: MC9S08JS16

MC9S08JS8

MC9S08JS16L

MC9S08JS8L

MC9S08JS16RM

Rev. 4

4/2009

MC9S08JS16 MCU Series Reference Manual, Rev. 4

6 Freescale Semiconductor

Revision History

To provide the most up-to-date information, the revision of our documents on the World Wide Web will

be the most current. Your printed copy may be an earlier revision. To verify you have the latest information

available, refer to:

http://freescale.com

The following revision history table summarizes changes contained in this document.

Revision

Number

Revision

Date

Description of Changes

1 8/27/2008 Initial public release.

2 12/17/2008 Changed the content of register at address 0xFFAE and 0xFFAF in Ta bl e 4 - 4 and added the

description of factory trim value before this table.

Deleted duplicated information in KBI Features section.

Changed the default of PTASE/PTBSE registers after reset to 0.

3 3/6/2009 Updated Figure 4-4 and Figure 4-5.

4 4/24/2009 Added MC9S08JS16L and MC9S08JS8L information.

This product incorporates SuperFlash

®

technology licensed from SST.

Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc.

MC9S08JS16 MCU Series Reference Manual, Rev. 4

Freescale Semiconductor 7

List of Chapters

Chapter Number Title Page

Chapter 1 Device Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Chapter 2 Pins and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Chapter 3 Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Chapter 4 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

Chapter 5 Resets, Interrupts, and System Configuration . . . . . . . . . . . . . . .63

Chapter 6 Parallel Input/Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

Chapter 7 Central Processor Unit (S08CPUV2) . . . . . . . . . . . . . . . . . . . . . . . 87

Chapter 8 Keyboard Interrupt (S08KBIV2) . . . . . . . . . . . . . . . . . . . . . . . . . .107

Chapter 9 Multi-Purpose Clock Generator (S08MCGV1) . . . . . . . . . . . . . . .115

Chapter 10 Modulo Timer (S08MTIMV1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Chapter 11 Real-Time Counter (S08RTCV1) . . . . . . . . . . . . . . . . . . . . . . . . . 157

Chapter 12 Serial Communications Interface (S08SCIV4). . . . . . . . . . . . . . 167

Chapter 13 16-Bit Serial Peripheral Interface (S08SPI16V1) . . . . . . . . . . . .187

Chapter 14 Timer/Pulse-Width Modulator (S08TPMV3) . . . . . . . . . . . . . . . . 215

Chapter 15 Universal Serial Bus Device Controller (S08USBV1) . . . . . . . .243

Chapter 16 Cyclic Redundancy Check Generator (S08CRCV2) . . . . . . . . .275

Chapter 17 Development Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .283

MC9S08JS16 MCU Series Reference Manual, Rev. 4

Freescale Semiconductor 9

Contents

Section Number Title Page

Chapter 1

Device Overview

1.1 Introduction .....................................................................................................................................17

1.2 MCU Block Diagram ......................................................................................................................18

1.3 System Clock Distribution ..............................................................................................................19

Chapter 2

Pins and Connections

2.1 Introduction .....................................................................................................................................21

2.2 Device Pin Assignment ..................................................................................................................21

2.3 Recommended System Connections ...............................................................................................22

2.3.1 Power (V

DD

, V

SS

, V

SSOSC

, V

USB33

) ................................................................................24

2.3.2 Oscillator (XTAL, EXTAL) ..............................................................................................24

2.3.3 RESET Pin ........................................................................................................................24

2.3.4 Background/Mode Select (BKGD/MS) ............................................................................25

2.3.5 Bootloader Mode Select (BLMS) .....................................................................................26

2.3.6 USB Data Pins (USBDP, USBDN) ...................................................................................26

2.3.7 General-Purpose I/O and Peripheral Ports ........................................................................26

Chapter 3

Modes of Operation

3.1 Introduction .....................................................................................................................................29

3.2 Features ...........................................................................................................................................29

3.3 Run Mode ........................................................................................................................................29

3.4 Active Background Mode ...............................................................................................................29

3.5 Wait Mode .......................................................................................................................................30

3.6 Stop Modes ......................................................................................................................................31

3.6.1 Stop3 Mode .......................................................................................................................31

3.6.2 Stop2 Mode .......................................................................................................................32

3.6.3 On-Chip Peripheral Modules in Stop Modes ....................................................................33

Chapter 4

Memory

4.1 MC9S08JS16 Series Memory Map .................................................................................................35

4.1.1 Reset and Interrupt Vector Assignments ...........................................................................36

4.2 Register Addresses and Bit Assignments ........................................................................................37

4.3 RAM (System RAM) ......................................................................................................................43

4.4 USB RAM .......................................................................................................................................44

4.5 Bootloader ROM .............................................................................................................................44

MC9S08JS16 MCU Series Reference Manual, Rev. 4

10 Freescale Semiconductor

4.5.1 External Signal Description ..............................................................................................44

4.5.2 Modes of Operation ..........................................................................................................45

4.5.3 Flash Memory Map ...........................................................................................................46

4.5.4 Bootloader Operation ........................................................................................................47

4.6 Flash Memory .................................................................................................................................50

4.6.1 Features .............................................................................................................................50

4.6.2 Program and Erase Time ...................................................................................................50

4.6.3 Program and Erase Command Execution .........................................................................51

4.6.4 Burst Program Execution ..................................................................................................52

4.6.5 Access Errors ....................................................................................................................54

4.6.6 Flash Block Protection ......................................................................................................54

4.6.7 Flash Block Protection Disabled .......................................................................................55

4.6.8 Vector Redirection ............................................................................................................55

4.7 Security ............................................................................................................................................55

4.8 Flash Registers and Control Bits .....................................................................................................57

4.8.1 Flash Clock Divider Register (FCDIV) ............................................................................57

4.8.2 Flash Options Register (FOPT and NVOPT) ....................................................................58

4.8.3 Flash Configuration Register (FCNFG) ...........................................................................59

4.8.4 Flash Protection Register (FPROT and NVPROT) ..........................................................59

4.8.5 Flash Status Register (FSTAT) ..........................................................................................60

4.8.6 Flash Command Register (FCMD) ...................................................................................61

Chapter 5

Resets, Interrupts, and System Configuration

5.1 Introduction .....................................................................................................................................63

5.2 Features ...........................................................................................................................................63

5.3 MCU Reset ......................................................................................................................................63

5.4 Computer Operating Properly (COP) Watchdog .............................................................................64

5.5 Interrupts .........................................................................................................................................65

5.5.1 Interrupt Stack Frame .......................................................................................................66

5.5.2 External Interrupt Request (IRQ) Pin ...............................................................................66

5.5.3 Interrupt Vectors, Sources, and Local Masks ...................................................................67

5.6 Low-Voltage Detect (LVD) System ................................................................................................69

5.6.1 Power-On Reset Operation ...............................................................................................69

5.6.2 Low-Voltage Detection (LVD) Reset Operation ...............................................................69

5.6.3 Low-Voltage Warning (LVW) Interrupt Operation ...........................................................69

5.7 Reset, Interrupt, and System Control Registers and Control Bits ...................................................70

5.7.1 Interrupt Pin Request Status and Control Register (IRQSC) ............................................70

5.7.2 System Reset Status Register (SRS) .................................................................................71

5.7.3 System Background Debug Force Reset Register (SBDFR) ............................................72

5.7.4 System Options Register 1 (SOPT1) ................................................................................73

5.7.5 System Options Register 2 (SOPT2) ................................................................................74

5.7.6 Flash Protection Defeat Register (FPROTD) ...................................................................75

5.7.7 SIGNATURE Register (SIGNATURE) ............................................................................75

5.7.8 System Device Identification Register (SDIDH, SDIDL) ................................................76

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Freescale Semiconductor 11

5.7.9 System Power Management Status and Control 1 Register (SPMSC1) ...........................77

5.7.10 System Power Management Status and Control 2 Register (SPMSC2) ...........................78

Chapter 6

Parallel Input/Output

6.1 Introduction .....................................................................................................................................79

6.2 Port Data and Data Direction ..........................................................................................................79

6.3 Pin Control ......................................................................................................................................80

6.3.1 Internal Pullup Enable ......................................................................................................81

6.3.2 Output Slew Rate Control Enable .....................................................................................81

6.3.3 Output Drive Strength Select ............................................................................................81

6.4 Pin Behavior in Stop Modes ............................................................................................................81

6.5 Parallel I/O and Pin Control Registers ............................................................................................81

6.5.1 Port A I/O Registers (PTAD and PTADD) ........................................................................82

6.5.2 Port A Pin Control Registers (PTAPE, PTASE, PTADS) .................................................82

6.5.3 Port B I/O Registers (PTBD and PTBDD) ........................................................................84

6.5.4 Port B Pin Control Registers (PTBPE, PTBSE, PTBDS) .................................................84

Chapter 7

Central Processor Unit (S08CPUV2)

7.1 Introduction .....................................................................................................................................87

7.1.1 Features .............................................................................................................................87

7.2 Programmer’s Model and CPU Registers .......................................................................................88

7.2.1 Accumulator (A) ...............................................................................................................88

7.2.2 Index Register (H:X) ........................................................................................................88

7.2.3 Stack Pointer (SP) .............................................................................................................89

7.2.4 Program Counter (PC) ......................................................................................................89

7.2.5 Condition Code Register (CCR) .......................................................................................89

7.3 Addressing Modes ...........................................................................................................................91

7.3.1 Inherent Addressing Mode (INH) .....................................................................................91

7.3.2 Relative Addressing Mode (REL) ....................................................................................91

7.3.3 Immediate Addressing Mode (IMM) ................................................................................91

7.3.4 Direct Addressing Mode (DIR) ........................................................................................91

7.3.5 Extended Addressing Mode (EXT) ..................................................................................92

7.3.6 Indexed Addressing Mode ................................................................................................92

7.4 Special Operations ...........................................................................................................................93

7.4.1 Reset Sequence .................................................................................................................93

7.4.2 Interrupt Sequence ............................................................................................................93

7.4.3 Wait Mode Operation ........................................................................................................94

7.4.4 Stop Mode Operation ........................................................................................................94

7.4.5 BGND Instruction .............................................................................................................95

7.5 HCS08 Instruction Set Summary ....................................................................................................96

MC9S08JS16 MCU Series Reference Manual, Rev. 4

12 Freescale Semiconductor

Chapter 8

Keyboard Interrupt (S08KBIV2)

8.1 Introduction ...................................................................................................................................107

8.1.1 Features ...........................................................................................................................109

8.1.2 Modes of Operation ........................................................................................................109

8.1.3 Block Diagram ................................................................................................................109

8.2 External Signal Description ..........................................................................................................110

8.3 Register Definition ........................................................................................................................110

8.3.1 KBI Status and Control Register (KBISC) .....................................................................110

8.3.2 KBI Pin Enable Register (KBIPE) .................................................................................. 111

8.3.3 KBI Edge Select Register (KBIES) ................................................................................111

8.4 Functional Description ..................................................................................................................112

8.4.1 Edge Only Sensitivity .....................................................................................................112

8.4.2 Edge and Level Sensitivity .............................................................................................112

8.4.3 KBI Pullup/Pulldown Resistors ......................................................................................113

8.4.4 KBI Initialization ............................................................................................................113

Chapter 9

Multi-Purpose Clock Generator (S08MCGV1)

9.1 Introduction ...................................................................................................................................115

9.1.1 Features ...........................................................................................................................117

9.1.2 Modes of Operation ........................................................................................................119

9.2 External Signal Description ..........................................................................................................119

9.3 Register Definition ........................................................................................................................120

9.3.1 MCG Control Register 1 (MCGC1) ...............................................................................120

9.3.2 MCG Control Register 2 (MCGC2) ...............................................................................121

9.3.3 MCG Trim Register (MCGTRM) ...................................................................................122

9.3.4 MCG Status and Control Register (MCGSC) .................................................................123

9.3.5 MCG Control Register 3 (MCGC3) ...............................................................................124

9.4 Functional Description ..................................................................................................................126

9.4.1 Operational Modes ..........................................................................................................126

9.4.2 Mode Switching ..............................................................................................................130

9.4.3 Bus Frequency Divider ...................................................................................................131

9.4.4 Low Power Bit Usage .....................................................................................................131

9.4.5 Internal Reference Clock ................................................................................................131

9.4.6 External Reference Clock ...............................................................................................131

9.4.7 Fixed Frequency Clock ...................................................................................................132

9.5 Initialization / Application Information ........................................................................................132

9.5.1 MCG Module Initialization Sequence ............................................................................132

9.5.2 MCG Mode Switching ....................................................................................................133

9.5.3 Calibrating the Internal Reference Clock (IRC) .............................................................144

Chapter 10

Modulo Timer (S08MTIMV1)

10.1 Introduction ...................................................................................................................................147

MC9S08JS16 MCU Series Reference Manual, Rev. 4

Freescale Semiconductor 13

10.1.1 MTIM Configuration Information ..................................................................................147

10.1.2 Features ...........................................................................................................................149

10.1.3 Modes of Operation ........................................................................................................149

10.1.4 Block Diagram ................................................................................................................150

10.2 External Signal Description ..........................................................................................................150

10.3 Register Definition ........................................................................................................................150

10.3.1 MTIM Status and Control Register (MTIMSC) .............................................................152

10.3.2 MTIM Clock Configuration Register (MTIMCLK) .......................................................153

10.3.3 MTIM Counter Register (MTIMCNT) ...........................................................................154

10.3.4 MTIM Modulo Register (MTIMMOD) ..........................................................................154

10.4 Functional Description ..................................................................................................................155

10.4.1 MTIM Operation Example .............................................................................................156

Chapter 11

Real-Time Counter (S08RTCV1)

11.1 Introduction ...................................................................................................................................157

11.1.1 Features ...........................................................................................................................159

11.1.2 Modes of Operation ........................................................................................................159

11.1.3 Block Diagram ................................................................................................................160

11.2 External Signal Description ..........................................................................................................160

11.3 Register Definition ........................................................................................................................160

11.3.1 RTC Status and Control Register (RTCSC) ....................................................................161

11.3.2 RTC Counter Register (RTCCNT) ..................................................................................162

11.3.3 RTC Modulo Register (RTCMOD) ................................................................................162

11.4 Functional Description ..................................................................................................................162

11.4.1 RTC Operation Example .................................................................................................163

11.5 Initialization/Application Information ..........................................................................................164

Chapter 12

Serial Communications Interface (S08SCIV4)

12.1 Introduction ...................................................................................................................................167

12.1.1 Features ...........................................................................................................................169

12.1.2 Modes of Operation ........................................................................................................169

12.1.3 Block Diagram ................................................................................................................169

12.2 Register Definition ........................................................................................................................172

12.2.1 SCI Baud Rate Registers (SCIBDH, SCIBDL) ..............................................................172

12.2.2 SCI Control Register 1 (SCIC1) .....................................................................................173

12.2.3 SCI Control Register 2 (SCIC2) .....................................................................................174

12.2.4 SCI Status Register 1 (SCIS1) ........................................................................................175

12.2.5 SCI Status Register 2 (SCIS2) ........................................................................................177

12.2.6 SCI Control Register 3 (SCIC3) .....................................................................................178

12.2.7 SCI Data Register (SCID) ...............................................................................................179

12.3 Functional Description ..................................................................................................................179

12.3.1 Baud Rate Generation .....................................................................................................179

12.3.2 Transmitter Functional Description ................................................................................180

MC9S08JS16 MCU Series Reference Manual, Rev. 4

14 Freescale Semiconductor

12.3.3 Receiver Functional Description ....................................................................................181

12.3.4 Interrupts and Status Flags ..............................................................................................183

12.3.5 Additional SCI Functions ...............................................................................................184

Chapter 13

16-Bit Serial Peripheral Interface (S08SPI16V1)

13.1 Introduction ...................................................................................................................................187

13.1.1 SPI Port Configuration Information ...............................................................................187

13.1.2 Features ...........................................................................................................................190

13.1.3 Modes of Operation ........................................................................................................190

13.1.4 Block Diagrams ..............................................................................................................190

13.2 External Signal Description ..........................................................................................................192

13.2.1 SPSCK — SPI Serial Clock ............................................................................................193

13.2.2 MOSI — Master Data Out, Slave Data In ......................................................................193

13.2.3 MISO — Master Data In, Slave Data Out ......................................................................193

13.2.4 SS — Slave Select ..........................................................................................................193

13.3 Register Definition ........................................................................................................................193

13.3.1 SPI Control Register 1 (SPIC1) ......................................................................................193

13.3.2 SPI Control Register 2 (SPIC2) ......................................................................................195

13.3.3 SPI Baud Rate Register (SPIBR) ....................................................................................196

13.3.4 SPI Status Register (SPIS) ..............................................................................................197

13.3.5 SPI Data Registers (SPIDH:SPIDL) ...............................................................................198

13.3.6 SPI Match Registers (SPIMH:SPIML) ...........................................................................199

13.4 Functional Description ..................................................................................................................199

13.4.1 General ............................................................................................................................199

13.4.2 Master Mode ...................................................................................................................200

13.4.3 Slave Mode .....................................................................................................................201

13.4.4 Data Transmission Length ..............................................................................................202

13.4.5 SPI Clock Formats ..........................................................................................................203

13.4.6 SPI Baud Rate Generation ..............................................................................................205

13.4.7 Special Features ..............................................................................................................205

13.4.8 Error Conditions .............................................................................................................207

13.4.9 Low Power Mode Options ..............................................................................................207

13.4.10SPI Interrupts ..................................................................................................................209

13.5 Initialization/Application Information ..........................................................................................210

13.5.1 SPI Module Initialization Example .................................................................................210

Chapter 14

Timer/Pulse-Width Modulator (S08TPMV3)

14.1 Introduction ...................................................................................................................................215

14.2 Features .........................................................................................................................................215

14.3 TPMV3 Differences from Previous Versions ................................................................................217

14.3.1 Migrating from TPMV1 ..................................................................................................219

14.3.2 Features ...........................................................................................................................220

14.3.3 Modes of Operation ........................................................................................................220

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Freescale Semiconductor 15

14.3.4 Block Diagram ................................................................................................................221

14.4 Signal Description .........................................................................................................................223

14.4.1 Detailed Signal Descriptions ..........................................................................................223

14.5 Register Definition ........................................................................................................................227

14.5.1 TPM Status and Control Register (TPMSC) ..................................................................227

14.5.2 TPM-Counter Registers (TPMCNTH:TPMCNTL) ........................................................228

14.5.3 TPM Counter Modulo Registers (TPMMODH:TPMMODL) ........................................229

14.5.4 TPM Channel n Status and Control Register (TPMCnSC) ............................................230

14.5.5 TPM Channel Value Registers (TPMCnVH:TPMCnVL) ..............................................231

14.6 Functional Description ..................................................................................................................233

14.6.1 Counter ............................................................................................................................233

14.6.2 Channel Mode Selection .................................................................................................235

14.7 Reset Overview .............................................................................................................................238

14.7.1 General ............................................................................................................................238

14.7.2 Description of Reset Operation .......................................................................................238

14.8 Interrupts .......................................................................................................................................238

14.8.1 General ............................................................................................................................238

14.8.2 Description of Interrupt Operation .................................................................................239

Chapter 15

Universal Serial Bus Device Controller (S08USBV1)

15.1 Introduction ...................................................................................................................................243

15.1.1 Clocking Requirements ...................................................................................................243

15.1.2 Current Consumption in USB Suspend ..........................................................................243

15.1.3 3.3 V Regulator ...............................................................................................................243

15.1.4 Features ...........................................................................................................................246

15.1.5 Modes of Operation ........................................................................................................246

15.1.6 Block Diagram ................................................................................................................247

15.2 External Signal Description ..........................................................................................................248

15.2.1 USBDP ............................................................................................................................248

15.2.2 USBDN ...........................................................................................................................248

15.2.3 V

USB33 ............................................................................................................................................................. 248

15.3 Register Definition ........................................................................................................................248

15.3.1 USB Control Register 0 (USBCTL0) .............................................................................249

15.3.2 Peripheral ID Register (PERID) .....................................................................................249

15.3.3 Peripheral ID Complement Register (IDCOMP) ............................................................250

15.3.4 Peripheral Revision Register (REV) ...............................................................................250

15.3.5 Interrupt Status Register (INTSTAT) ..............................................................................251

15.3.6 Interrupt Enable Register (INTENB) ..............................................................................252

15.3.7 Error Interrupt Status Register (ERRSTAT) ...................................................................253

15.3.8 Error Interrupt Enable Register (ERRENB) ...................................................................254

15.3.9 Status Register (STAT) ....................................................................................................255

15.3.10Control Register (CTL) ...................................................................................................256

15.3.11Address Register (ADDR) ..............................................................................................257

15.3.12Frame Number Register (FRMNUML, FRMNUMH) ...................................................257

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16 Freescale Semiconductor

15.3.13Endpoint Control Register (EPCTLn, n=0-6) .................................................................258

15.4 Functional Description ..................................................................................................................259

15.4.1 Block Descriptions ..........................................................................................................259

15.4.2 Buffer Descriptor Table (BDT) .......................................................................................264

15.4.3 USB Transactions ...........................................................................................................267

15.4.4 USB Packet Processing ...................................................................................................269

15.4.5 Start of Frame Processing ...............................................................................................270

15.4.6 Suspend/Resume .............................................................................................................271

15.4.7 Resets ..............................................................................................................................272

15.4.8 Interrupts .........................................................................................................................273

Chapter 16

Cyclic Redundancy Check Generator (S08CRCV2)

16.1 Introduction ...................................................................................................................................275

16.1.1 Features ...........................................................................................................................277

16.1.2 Modes of Operation ........................................................................................................277

16.1.3 Block Diagram ................................................................................................................278

16.2 External Signal Description ..........................................................................................................278

16.3 Register Definition .......................................................................................................................278

16.3.1 Memory Map ..................................................................................................................278

16.3.2 Register Descriptions ......................................................................................................279

16.4 Functional Description ..................................................................................................................280

16.4.1 ITU-T (CCITT) Recommendations & Expected CRC Results ......................................280

16.5 Initialization Information ..............................................................................................................281

Chapter 17

Development Support

17.1 Introduction ...................................................................................................................................283

17.1.1 Features ...........................................................................................................................284

17.2 Background Debug Controller (BDC) ..........................................................................................284

17.2.1 BKGD Pin Description ...................................................................................................285

17.2.2 Communication Details ..................................................................................................286

17.2.3 BDC Commands .............................................................................................................289

17.2.4 BDC Hardware Breakpoint .............................................................................................292

17.3 On-Chip Debug System (DBG) ....................................................................................................293

17.3.1 Comparators A and B .....................................................................................................293

17.3.2 Bus Capture Information and FIFO Operation ...............................................................293

17.3.3 Change-of-Flow Information ..........................................................................................294

17.3.4 Tag vs. Force Breakpoints and Triggers .........................................................................294

17.3.5 Trigger Modes .................................................................................................................295

17.3.6 Hardware Breakpoints ....................................................................................................297

17.4 Register Definition ........................................................................................................................297

17.4.1 BDC Registers and Control Bits .....................................................................................297

17.4.2 System Background Debug Force Reset Register (SBDFR) ..........................................299

17.4.3 DBG Registers and Control Bits .....................................................................................300

MC9S08JS16 MCU Series Reference Manual, Rev. 4

Freescale Semiconductor 17

Chapter 1

Device Overview

1.1 Introduction

MC9S08JS16 series MCUs are members of the low-cost, high-performance HCS08 family of 8-bit

microcontroller units (MCUs). All MCUs in the family use the enhanced HCS08 core and are available

with a variety of modules, memory sizes, memory types, and package types.

NOTE

The only difference between MC9S08JS16/MC9S08JS8 and

MC9S08JS16L/MC9S08JS8L is that MC9S08JS16 and MC9S08JS8

support USB bootloader function with voltage above 3.9 V while

MC9S08JS16L and MC9S08JS8L support USB bootloader function at

3.3 V.

Disable internal USB voltage regulator and apply 3.3 V to the V

USB33

when using MC9S08JS16L and MC9S08JS8L for the USB bootloader

function.

Table 1-1 summarizes the peripheral availability per package type for the devices available in the

MC9S08JS16 series.

Table 1-1. MC9S08JS16 Series Features by MCU and Package

Feature MC9S08JS8/MC9S08JS8L MC9S08JS16/MC9S08JS16L

Package 24-pin QFN 20-pin SOIC 24-pin QFN 20-pin SOIC

Flash size (bytes) 8,192 16,384

RAM size (bytes) 512 512

USB RAM (bytes) 256 256

IRQ yes yes

KBI 8 8

SCI yes yes

SPI yes yes

MTIM yes yes

TPM channels 2 2

USB yes yes

CRC yes yes

I/O pins 14 (2 output only) 14 (2 output only)

Chapter 1 Device Overview

MC9S08JS16 MCU Series Reference Manual, Rev. 4

18 Freescale Semiconductor

1.2 MCU Block Diagram

The block diagram in Figure 1-1 shows the structure of the MC9S08JS16 series MCU.

Figure 1-1. MC9S08JS16 Series Block Diagram

V

SS

V

DD

PORT B

8-BIT KEYBOARD

INTERRUPT MODULE (KBI)

USER FLASH (IN BYTES)

USER RAM (IN BYTES)

ON-CHIP ICE AND

DEBUG MODULE (DBG)

HCS08 CORE

CPU

NOTES:

1. Port pins are software configurable with pullup device if input port.

2. Pin contains software configurable pullup/pulldown device if IRQ is enabled (IRQPE = 1).

Pulldown is enabled if rising edge detect is selected (IRQEDG = 1).

3. IRQ does not have a clamp diode to V

DD

. IRQ must not be driven above V

DD

.

4. RESET

contains integrated pullup device if PTB1 enabled as reset pin function (RSTPE = 1).

5. Pin contains integrated pullup device.

6. When pin functions as KBI (KBIPEn = 1) and associated pin is configured to enable the pullup

device, KBEDGn can be used to reconfigure the pullup as a pulldown device.

PTA2/KBIP2/MOSI

PORT A

HCS08 SYSTEM CONTROL

RESETS AND INTERRUPTS

MODES OF OPERATION

POWER MANAGEMENT

VOLTAGE

REGULATOR

COP IRQ LVD

LOW-POWER OSCILLATOR

MULTI-PURPOSE CLOCK

GENERATOR (MCG)

RESET

2-CHANNEL TIMER/PWM

MODULE (TPM)

PTA3/KBIP3/SPSCK

BKGD/MS

IRQ

KBIPx

TCLK

TPMCH0

TPMCH1

EXTAL

XTAL

USB

USB ENDPOINT

MODULE

RAM

FULL SPEED

USB

TRANSCEIVER

USBDP

USBDN

PTA6/KBIP6/RxD

PTA7/KBIP7/TxD

REAL-TIME COUNTER

(RTC)

PTA4/KBIP4/SS

PTA5/KBIP5/TPMCH1

8

SYSTEM

USB 3.3 V VOLTAGE REGULATOR

V

USB33

512

MC9S08JS16 = 16,384

V

SSOSC

PTA0/KBIP0/TPMCH0

PTA1/KBIP1/MISO

PTB3/BLMS

PTB2/BKGD/MS

PTB0/IRQ/TCLK

PTB1/RESET

PTB5/EXTAL

PTB4/XTAL

SERIAL PERIPHERAL

INTERFACE MODULE (SPI)

SPSCK

SS

MISO

MOSI

8-/16-BIT

8-BIT MODULO TIMER

MODULE (MTIM)

INTERFACE MODULE (SCI)

SERIAL COMMUNICATIONS

RxD

TxD

BDC

Bootloader ROM (IN BYTES)

4096

16-BIT Cyclic Redundancy

MODULE (CRC)

Check Generator

MC9S08JS8L = 8,192

MC9S08JS16L = 16,384

MC9S08JS8 = 8,192

Chapter 1 Device Overview

MC9S08JS16 MCU Series Reference Manual, Rev. 4

Freescale Semiconductor 19

Table 1-2 lists the functional versions of the on-chip modules.

1.3 System Clock Distribution

TCLK — External input clock source for TPM and MTIM and is referenced as TPMCLK in Chapter 14,

“Timer/Pulse-Width Modulator (S08TPMV3).”

Figure 1-2. System Clock Distribution Diagram

The MCG supplies the following clock sources:

Table 1-2. Versions of On-Chip Modules

Module Version

Central Processing Unit (CPU) 2

Keyboard Interrupt (KBI) 2

Multi-Purpose Clock Generator (MCG) 1

Real-Time Counter (RTC) 1

Serial Communications Interface (SCI) 4

Serial Peripheral Interface (SPI16) 1

Modulo Timer (MTIM) 1

Timer Pulse-Width Modulator (TPM) 3

Universal Serial Bus (USB) 1

Cyclic Redundancy Check Generator (CRC) 2

Debug Module (DBG) 2

TPM

BDC

CPU

RAM FLASH

2

MCG

MCGOUT

÷2

BUSCLK

MCGLCLK

MCGERCLK

COP

1

The fixed frequency clock (FFCLK) is internally synchronized to the bus clock and must not exceed one half of the

bus clock frequency.

2

Flash and EEPROM have frequency requirements for program and erase operation. See MC9S08JS16 Series

Data Sheet for details.

XOSC

EXTAL XTAL

FFCLK

1

MCGFFCLK

RTC

1 kHz

LPO

TCLK

MCGIRCLK

÷2

USB

USB RAM

SCI

ROM

MTIM

SPI

CRC

Chapter 1 Device Overview

MC9S08JS16 MCU Series Reference Manual, Rev. 4

20 Freescale Semiconductor

• MCGOUT — This clock source is used as the CPU, USB RAM and USB module clock, and is

divided by two to generate the peripheral bus clock (BUSCLK). Control bits in the MCG control

registers determine which of the three clock sources is connected:

— Internal reference clock

— External reference clock

— Frequency-locked loop (FLL) or phase-locked loop (PLL) output

See Chapter 9, “Multi-Purpose Clock Generator (S08MCGV1),” for details on configuring the

MCGOUT clock.

• MCGLCLK — This clock source is derived from the digitally controlled oscillator (DCO) of the

MCG. Development tools can select this internal self-clocked source to speed up BDC

communications in systems where the bus clock is slow.

• MCGIRCLK — This is the internal reference clock and can be selected as the real-time counter

(RTC) clock source. Chapter 9, “Multi-Purpose Clock Generator (S08MCGV1),” explains the

MCGIRCLK in more detail. See Chapter 11, “Real-Time Counter (S08RTCV1),” for more

information regarding the use of MCGIRCLK.

• MCGERCLK — This is the external reference clock and can be selected as the clock source of

RTC module. Section 9.4.6, “External Reference Clock,” explains the MCGERCLK in more

detail. See Chapter 11, “Real-Time Counter (S08RTCV1),” for more information regarding the use

of MCGERCLK with this module.

• MCGFFCLK — This clock source is divided by two to generate FFCLK after being synchronized

to the BUSCLK. It can be selected as clock source for the TPM or MTIM modules. The frequency

of the MCGFFCLK is determined by the settings of the MCG. See Section 9.4.7, “Fixed Frequency

Clock,” for details.

• LPO clock — This clock is generated from an internal low power oscillator that is completely

independent of the MCG module. The LPO clock can be selected as the clock source to the RTC

or COP modules. See Chapter 11, “Real-Time Counter (S08RTCV1),” and Section 5.4, “Computer

Operating Properly (COP) Watchdog,” for details on using the LPO clock with these modules.

• TCLK — TCLK is the optional external clock source for the TPM or MTIM modules. The TCLK

must be limited to 1/4th the frequency of the BUSCLK for synchronization. See Chapter 14,

“Timer/Pulse-Width Modulator (S08TPMV3),” for more details.

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