Fujitsu FR60 User manual

FUJITSU SEMICONDUCTOR

CONTROLLER MANUAL

FR60

32-BIT MICROCONTROLLER

MB91460 Series

User’s Manual

Version 1.00

2006-10-22

- PRELIMINARY -

CM71-xxxxx-1E

FUJITSU LIMITED

FR60

32-BIT MICROCONTROLLER

MB91460 Series

User’s Manual

-i

• The contents of this document are subject to change without notice.

Customers are advised to consult with FUJITSU sales representatives before ordering.

• The information, such as descriptions of function and application circuit examples, in this document are presented solely

for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device; Fujitsu does not

warrant proper operation of the device with respect to use based on such information. When you develop equipment

incorporating the device based on such information, you must assume any responsibility arising out of such use of the

information. Fujitsu assumes no liability for any damages whatsoever arising out of the use of the information.

• Any information in this document, including descriptions of function and schematic diagrams, shall not be construed as

license of the use or exercise of any intellectual property right, such as patent right or copyright, or any other right of

Fujitsu or any third party or does Fujitsu warrant non-infringement of any third-party' s intellectual property right or other

right by using such information. Fujitsu assumes no liability for any infringement of the intellectual property rights or other

rights of third parties which would result from the use of information contained herein.

• The products described in this document are designed, developed and manufactured as contemplated for general use,

including without limitation, ordinary industrial use, general office use, personal use, and household use, but are not

designed, developed and manufactured as contemplated (1) for use accompanying fatal risks or dangers that, unless

extremely high safety is secured, could have a serious effect to the public, and could lead directly to death, personal injury,

severe physical damage or other loss (i.e., nuclear reaction control in nuclear facility, aircraft flight control, air traffic

control, mass transport control, medical life support system, missile launch control in weapon system), or (2) for use

requiring extremely high reliability (i.e., submersible repeater and artificial satellite).

Please note that Fujitsu will not be liable against you and/or any third party for any claims or damages arising in connection

with above-mentioned uses of the products.

• Any semiconductor devices have an inherent chance of failure. You must protect against injury, damage or loss from such

failures by incorporating safety design measures into your facility and equipment such as redundancy, fire protection, and

prevention of over-current levels and other abnormal operating conditions.

• If any products described in this document represent goods or technologies subject to certain restrictions on export under

the Foreign Exchange and Foreign Trade Law of Japan, the prior authorization by Japanese government will be required

for export of those products from Japan.

i

TOC

Chapter 1 Introduction......................................................................................... 1

1. How to Handle the Device..................................................................................................... 1

2. Instruction for Users............................................................................................................... 3

3. Caution: debug-related matters............................................................................................. 6

4. How to Use This Document................................................................................................... 7

Chapter 2 MB91460 Rev.A/Rev.B Overview..................................................... 11

1. Overview.............................................................................................................................. 11

2. Features............................................................................................................................... 11

3. MB91460 Series Product Lineup......................................................................................... 19

4. Block Diagram ..................................................................................................................... 21

Chapter 3 MB91460 Series Basic Information ................................................. 23

1. Memory Map........................................................................................................................ 23

2. I/O Map................................................................................................................................ 24

3. Interrupt Vector Table.......................................................................................................... 73

4. Package............................................................................................................................... 78

5. Pin Assignment Diagram..................................................................................................... 79

6. Pin Definitions...................................................................................................................... 80

7. I/O Circuit Type.................................................................................................................... 94

8. Pin State Table.................................................................................................................... 96

Chapter 4 CPU Architecture ............................................................................ 105

1. Overview............................................................................................................................ 105

2. Features............................................................................................................................. 106

3. CPU................................................................................................................................... 107

4. 32-bit/16-bit Bus Converter................................................................................................ 107

5. Harvard/Princeton Bus Converter...................................................................................... 107

6. Instruction Overview.......................................................................................................... 108

7. Data Structure.................................................................................................................... 109

8. Word Alignment................................................................................................................. 110

9. Addressing......................................................................................................................... 111

Chapter 5 CPU Registers................................................................................. 113

1. General-purpose Registers................................................................................................ 113

2. Dedicated Registers .......................................................................................................... 113

Chapter 6 EIT: Exceptions, Interrupts and Traps.......................................... 121

1. Overview............................................................................................................................ 121

2. Features............................................................................................................................. 121

3. EIT Trigger......................................................................................................................... 121

4. Return from EIT................................................................................................................. 121

5. EIT Interrupt Level............................................................................................................. 122

ii

6. EIT Vector Table................................................................................................................ 122

7. Multiple EIT Processing..................................................................................................... 123

8. Operation........................................................................................................................... 125

9. Caution .............................................................................................................................. 128

Chapter 7 Branch Instruction.......................................................................... 129

1. Branch Instruction with Delay Slot..................................................................................... 129

2. Operation of Branch Instruction with Delay Slot................................................................ 129

3. Actual Example (with Delay Slot)....................................................................................... 130

4. Restrictions on Branch Instruction with Delay Slot............................................................ 131

5. Branch Instruction without Delay Slot................................................................................ 132

6. Operation of Branch Instruction without Delay Slot........................................................... 132

Chapter 8 Device State Transition .................................................................. 133

1. Overview............................................................................................................................ 133

2. Features............................................................................................................................. 133

3. State Transition Diagram................................................................................................... 134

Chapter 9 Reset ................................................................................................ 139

1. Overview............................................................................................................................ 139

2. Features............................................................................................................................. 139

3. Configuration ..................................................................................................................... 140

4. Registers............................................................................................................................ 141

5. INIT Pin Input (INIT: Settings Initialization Reset) ............................................................ 146

6. Watchdog Reset (INIT: Settings Initialization Reset)......................................................... 148

7. Software Reset (RST: Operation Initialization Reset)....................................................... 149

8. Reset Operation Modes..................................................................................................... 150

9. MCU Operation Mode........................................................................................................ 151

10. Caution .............................................................................................................................. 152

Chapter 10 Standby............................................................................................ 155

1. Overview............................................................................................................................ 155

2. Features............................................................................................................................. 155

3. Configuration ..................................................................................................................... 156

4. Registers............................................................................................................................ 157

5. Operation........................................................................................................................... 159

6. Settings.............................................................................................................................. 161

7. Q&A................................................................................................................................... 161

8. Caution .............................................................................................................................. 165

Chapter 11 Memory Controller.......................................................................... 167

1. Overview............................................................................................................................ 167

2. FLASH Interface................................................................................................................ 167

3. General Purpose RAM....................................................................................................... 167

4. Instruction Cache and Data Buffer..................................................................................... 167

5. Prefetch ............................................................................................................................. 167

6. Fixed Mode and Reset Vectors ......................................................................................... 167

7. Registers............................................................................................................................ 168

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8. Explanations of Registers.................................................................................................. 169

Chapter 12 Instruction Cache............................................................................ 179

1. General description............................................................................................................ 179

2. Main body structure........................................................................................................... 179

3. Operating mode conditions................................................................................................ 185

4. Cacheable areas in the instruction cache.......................................................................... 186

5. Settings for handling the I-Cache ...................................................................................... 186

Chapter 13 Clock Control .................................................................................. 189

1. Overview............................................................................................................................ 189

2. Features............................................................................................................................. 189

3. Configuration ..................................................................................................................... 190

4. Registers............................................................................................................................ 191

5. Operation........................................................................................................................... 199

6. Settings.............................................................................................................................. 201

7. Q & A................................................................................................................................. 202

8. Caution .............................................................................................................................. 205

Chapter 14 PLL Interface ................................................................................... 207

1. Overview............................................................................................................................ 207

2. Features............................................................................................................................. 207

3. Frequency calculation........................................................................................................ 207

4. Registers............................................................................................................................ 208

5. Recommended Settings .................................................................................................... 212

6. Clock Auto Gear Up/Down................................................................................................. 213

7. Caution .............................................................................................................................. 215

Chapter 15 CAN Clock Prescaler ...................................................................... 217

1. Overview............................................................................................................................ 217

2. Features............................................................................................................................. 217

3. Registers............................................................................................................................ 218

Chapter 16 Clock Supervisor ............................................................................ 221

1. Overview Clock Supervisor................................................................................................ 221

2. Clock Supervisor Register................................................................................................. 222

3. Block Diagram Clock Supervisor....................................................................................... 224

4. Operation Modes............................................................................................................... 225

Chapter 17 Clock Modulator.............................................................................. 239

1. Overview............................................................................................................................ 239

2. Clock Modulator Registers................................................................................................. 240

3. Application Note................................................................................................................. 247

Chapter 18 Timebase Counter........................................................................... 249

1. Overview............................................................................................................................ 249

2. Features............................................................................................................................. 249

iv

3. Configuration ..................................................................................................................... 250

4. Registers............................................................................................................................ 251

5. Operation........................................................................................................................... 253

6. Settings.............................................................................................................................. 259

7. Q&A................................................................................................................................... 260

8. Caution .............................................................................................................................. 262

Chapter 19 Timebase Timer............................................................................... 263

1. Overview............................................................................................................................ 263

2. Features............................................................................................................................. 263

3. Configuration ..................................................................................................................... 264

4. Register ............................................................................................................................. 265

5. Operation........................................................................................................................... 267

6. Setting................................................................................................................................ 268

7. Q & A................................................................................................................................. 269

8. Caution .............................................................................................................................. 271

Chapter 20 Software Watchdog Timer.............................................................. 273

1. Overview............................................................................................................................ 273

2. Features............................................................................................................................. 273

3. Configuration ..................................................................................................................... 274

4. Register ............................................................................................................................. 275

5. Operation........................................................................................................................... 278

6. Setting................................................................................................................................ 280

7. Q & A................................................................................................................................. 281

8. Caution .............................................................................................................................. 282

Chapter 21 Hardware Watchdog Timer ............................................................ 283

1. Overview............................................................................................................................ 283

2. Configuration ..................................................................................................................... 284

3. Register ............................................................................................................................. 285

4. Functions........................................................................................................................... 287

5. Caution .............................................................................................................................. 288

Chapter 22 Main Oscillation Stabilisation Timer ............................................. 289

1. Overview............................................................................................................................ 289

2. Features............................................................................................................................. 289

3. Configuration ..................................................................................................................... 290

4. Register ............................................................................................................................ 291

5. Operation........................................................................................................................... 292

6. Setting................................................................................................................................ 294

7. Q & A................................................................................................................................. 295

8. Caution .............................................................................................................................. 297

Chapter 23 Sub Oscillation Stabilisation Timer............................................... 299

1. Overview............................................................................................................................ 299

2. Features............................................................................................................................. 299

3. Configuration ..................................................................................................................... 300

v

4. Register ............................................................................................................................. 301

5. Operation........................................................................................................................... 303

6. Setting................................................................................................................................ 306

7. Q & A................................................................................................................................. 307

8. Caution .............................................................................................................................. 309

Chapter 24 Interrupt Control ............................................................................. 311

1. Overview............................................................................................................................ 311

2. Features............................................................................................................................. 311

3. Configuration ..................................................................................................................... 312

4. Registers............................................................................................................................ 313

5. Operation........................................................................................................................... 318

6. Setting................................................................................................................................ 319

7. Q & A................................................................................................................................. 319

8. Caution .............................................................................................................................. 320

Chapter 25 External Interrupt............................................................................ 321

1. Overview............................................................................................................................ 321

2. Features............................................................................................................................. 321

3. Configuration ..................................................................................................................... 322

4. Registers............................................................................................................................ 325

5. Operation........................................................................................................................... 327

6. Setting................................................................................................................................ 328

7. Q & A................................................................................................................................. 328

8. Caution .............................................................................................................................. 331

Chapter 26 DMA Controller................................................................................ 333

1. Overview of the DMA Controller (DMAC).......................................................................... 333

2. DMA Controller (DMAC) Registers.................................................................................... 335

3. DMA Controller (DMAC) Operation ................................................................................... 354

4. Operation Flowcharts......................................................................................................... 373

5. Data Bus............................................................................................................................ 376

6. DMA External Interface...................................................................................................... 379

Chapter 27 Delayed Interrupt ............................................................................ 383

1. Overview............................................................................................................................ 383

2. Features............................................................................................................................. 383

3. Configuration ..................................................................................................................... 383

4. Register ............................................................................................................................. 384

5. Operation........................................................................................................................... 384

6. Setting................................................................................................................................ 385

7. Q & A................................................................................................................................. 385

8. Caution .............................................................................................................................. 385

Chapter 28 Bit Search ........................................................................................ 387

1. Overview............................................................................................................................ 387

2. Features............................................................................................................................. 387

3. Configuration ..................................................................................................................... 388

vi

4. Register ............................................................................................................................. 389

5. Operation........................................................................................................................... 391

6. Setting................................................................................................................................ 393

7. Q & A................................................................................................................................. 394

8. Caution .............................................................................................................................. 395

Chapter 29 MPU / EDSU..................................................................................... 397

1. Overview............................................................................................................................ 397

2. Features............................................................................................................................. 398

3. Break Functions................................................................................................................. 399

4. Registers............................................................................................................................ 407

5. Quick Reference................................................................................................................ 429

Chapter 30 I/O Ports........................................................................................... 431

1. I/O Ports Functions............................................................................................................ 431

2. I/O Circuit Types................................................................................................................ 453

3. Port Register Settings........................................................................................................ 454

Chapter 31 External Bus.................................................................................... 507

1. Overview of the External Bus Interface ............................................................................. 507

2. External Bus Interface Registers....................................................................................... 512

3. Setting Example of the Chip Select Area........................................................................... 542

4. Endian and Bus Access..................................................................................................... 543

5. Operation of the Ordinary bus interface............................................................................. 562

6. Burst Access Operation..................................................................................................... 574

7. Address/data Multiplex Interface ....................................................................................... 576

8. Prefetch Operation............................................................................................................. 579

9. SDRAM/FCRAM Interface Operation................................................................................ 582

10. DMA Access Operation ..................................................................................................... 592

11. Bus Arbitration................................................................................................................... 608

12. Procedure for Setting a Register ....................................................................................... 610

13. Notes on Using the External Bus Interface........................................................................ 611

Chapter 32 USART (LIN / FIFO) ......................................................................... 613

1. Overview............................................................................................................................ 613

2. USART Configuration........................................................................................................ 616

3. USART Pins....................................................................................................................... 620

4. USART Registers .............................................................................................................. 621

5. USART Interrupts .............................................................................................................. 638

6. USART Baud Rates........................................................................................................... 642

7. USART Operation.............................................................................................................. 647

8. Notes on using USART...................................................................................................... 663

Chapter 33 I2C Controller .................................................................................. 665

1. Overview............................................................................................................................ 665

2. I2C Interface Registers...................................................................................................... 667

3. I2C Interface Operation ..................................................................................................... 685

4. Programming Flow Charts................................................................................................. 687

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Chapter 34 CAN Controller................................................................................ 691

1. Overview............................................................................................................................ 691

2. Register Description .......................................................................................................... 692

3. Functional Description....................................................................................................... 720

4. CAN Application................................................................................................................. 724

Chapter 35 Free-Run Timer ............................................................................... 733

1. Overview............................................................................................................................ 733

2. Features............................................................................................................................. 733

3. Configuration Diagram....................................................................................................... 734

4. Registers............................................................................................................................ 735

5. Operation........................................................................................................................... 739

6. Setting................................................................................................................................ 741

7. Q & A................................................................................................................................. 742

8. Caution .............................................................................................................................. 745

Chapter 36 Input Capture................................................................................... 747

1. Overview............................................................................................................................ 747

2. Features............................................................................................................................. 747

3. Configuration ..................................................................................................................... 748

4. Register ............................................................................................................................. 749

5. Operation........................................................................................................................... 752

6. Settings.............................................................................................................................. 754

7. Q&A................................................................................................................................... 755

8. Caution .............................................................................................................................. 758

Chapter 37 Output Compare.............................................................................. 759

1. Overview............................................................................................................................ 759

2. Features............................................................................................................................. 759

3. Configuration Diagram....................................................................................................... 760

4. Registers............................................................................................................................ 761

5. Operation........................................................................................................................... 765

6. Settings.............................................................................................................................. 767

7. Q & A................................................................................................................................. 768

8. Caution .............................................................................................................................. 773

Chapter 38 Reload Timer ................................................................................... 775

1. Overview............................................................................................................................ 775

2. Features............................................................................................................................. 775

3. Configuration ..................................................................................................................... 776

4. Registers............................................................................................................................ 778

5. Operation........................................................................................................................... 782

6. Setting................................................................................................................................ 787

7. Q & A................................................................................................................................. 789

8. Caution .............................................................................................................................. 794

Chapter 39 Programmable Pulse Generator.................................................... 795

1. Overview............................................................................................................................ 795

viii

2. Features............................................................................................................................. 795

3. Configuration ..................................................................................................................... 797

4. Registers............................................................................................................................ 799

5. Operation........................................................................................................................... 808

6. Setting................................................................................................................................ 811

7. Q & A................................................................................................................................. 813

8. Caution .............................................................................................................................. 821

Chapter 40 Pulse Frequency Modulator........................................................... 823

1. PFM Overview................................................................................................................... 823

2. Reload Counter Registers ................................................................................................. 826

3. Reload Counter Operation................................................................................................. 830

4. PFM Operation and Setting............................................................................................... 833

Chapter 41 Up/Down Counter............................................................................ 835

1. Overview............................................................................................................................ 835

2. Feature .............................................................................................................................. 835

3. Configuration ..................................................................................................................... 836

4. Register ............................................................................................................................. 840

5. Operation........................................................................................................................... 848

6. Setting................................................................................................................................ 855

7. Q&A................................................................................................................................... 857

8. Caution .............................................................................................................................. 862

Chapter 42 Sound Generator............................................................................. 863

1. Overview............................................................................................................................ 863

2. Block Diagram ................................................................................................................... 864

3. Registers............................................................................................................................ 865

Chapter 43 Stepper Motor Controller ............................................................... 871

1. Overview............................................................................................................................ 871

2. Registers............................................................................................................................ 872

3. Operation........................................................................................................................... 881

4. Caution .............................................................................................................................. 883

Chapter 44 A/D Converter.................................................................................. 885

1. Overview of A/D Converter................................................................................................ 885

2. Block Diagram of A/D Converter........................................................................................ 886

3. Registers of A/D Converter................................................................................................ 887

4. Operation of A/D Converter............................................................................................... 896

5. Setting................................................................................................................................ 899

6. Q & A................................................................................................................................. 901

7. Caution .............................................................................................................................. 906

Chapter 45 D/A Converter.................................................................................. 909

1. Overview............................................................................................................................ 909

2. Features............................................................................................................................. 909

3. Configuration ..................................................................................................................... 910

ix

4. Registers............................................................................................................................ 911

5. Operation........................................................................................................................... 913

6. Setting................................................................................................................................ 914

7. Q & A................................................................................................................................. 915

8. Caution .............................................................................................................................. 916

Chapter 46 Alarm Comparator .......................................................................... 917

1. Overview............................................................................................................................ 917

2. Block Diagram .................................................................................................................. 917

3. Alarm Comparator Control/Status Register (ACSR).......................................................... 918

4. Operation Modes............................................................................................................... 919

Chapter 47 LCD Controller ................................................................................ 921

1. Overview............................................................................................................................ 921

2. Features............................................................................................................................. 921

3. Configuration ..................................................................................................................... 922

4. Registers............................................................................................................................ 924

5. Operation........................................................................................................................... 929

6. Setting................................................................................................................................ 934

7. Q&A................................................................................................................................... 935

8. Caution .............................................................................................................................. 940

Chapter 48 Clock Monitor.................................................................................. 941

1. Overview............................................................................................................................ 941

2. Features............................................................................................................................. 941

3. Configuration ..................................................................................................................... 942

4. Register ............................................................................................................................. 943

5. Operation........................................................................................................................... 945

6. Settings.............................................................................................................................. 946

7. Q&A................................................................................................................................... 946

8. Caution .............................................................................................................................. 947

Chapter 49 Real-Time Clock.............................................................................. 949

1. Overview............................................................................................................................ 949

2. Features............................................................................................................................. 949

3. Configuration ..................................................................................................................... 950

4. Registers............................................................................................................................ 951

5. Operation........................................................................................................................... 956

6. Setting................................................................................................................................ 958

7. Q&A................................................................................................................................... 959

8. Caution .............................................................................................................................. 961

Chapter 50 Subclock Calibration Unit .............................................................. 963

1. Overview............................................................................................................................ 963

2. Block Diagram ................................................................................................................... 964

3. Timing................................................................................................................................ 965

4. Clocks................................................................................................................................ 966

5. Register Description .......................................................................................................... 967

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6. Application Note................................................................................................................. 973

Chapter 51 Low Voltage Reset/Interrupt .......................................................... 975

1. Overview............................................................................................................................ 975

2. Features............................................................................................................................. 975

3. Registers............................................................................................................................ 976

Chapter 52 Regulator Control ........................................................................... 979

1. Overview............................................................................................................................ 979

2. Features............................................................................................................................. 979

3. Registers............................................................................................................................ 980

Chapter 53 Fixed Mode-Reset Vector / BOOT-ROM........................................ 983

1. Overview............................................................................................................................ 983

2. Check for Boot Conditions................................................................................................. 983

3. Registers modified by Boot ROM ...................................................................................... 988

4. Flash Access Mode Switching........................................................................................... 989

5. Bootloader Update Strategy .............................................................................................. 990

Chapter 54 Flash Memory.................................................................................. 993

1. Overview............................................................................................................................ 993

2. Features............................................................................................................................. 993

3. Configuration ..................................................................................................................... 994

4. Registers............................................................................................................................ 996

5. Access Modes ................................................................................................................... 996

6. Flash Access Mode Switching........................................................................................... 997

7. Auto Algorithms ................................................................................................................. 999

8. Caution ............................................................................................................................ 1007

Chapter 55 Flash Security ............................................................................... 1009

1. Overview.......................................................................................................................... 1009

2. Features........................................................................................................................... 1009

3. Flash Security Vectors..................................................................................................... 1010

4. Register ........................................................................................................................... 1013

Chapter 56 Electrical Specification................................................................. 1017

xi

xii

1

Chapter 1 Introduction

1.How to Handle the Device

Chapter 1 Introduction

1. How to Handle the Device

■ Device Handling Instructions

This chapter describes latch-up prevention and pin termination.

● To set latch-up prevention

Latch up may occur on CMOS ICs when the applied voltage for input terminals or output terminals is higher than V

CC

or lower than V

SS

, or a voltage higher than the maximum rating voltage is applied between V

CC

and V

SS

. Make sure

not to apply a voltage higher than the maximum rating voltage since latch up may surge electric current and result in

the thermal destruction of the device.

● Termination of unused pin

An unused pin must be terminated by a pull-up or pull-down resistor externally, or by switching on the internal pull-up

or pull-down resistor before enabling the pin inputs to avoid transverse current.

● Power-supply pin

If multiple V

CC

and V

SS

exist, as a matter of device design, they are connected to each other to prevent an error when

their voltage should be identical in the device. In order to reduce unnecessary radiation, prevent an strobe signal error

due to upward ground level, and comply with total output current standard, be sure to externally connect them to power

supply and ground. Give consideration to connect V

CC and

V

SS

of the device from power supply at low impedance.

Near the device, it is preferable to connect about 0.1uF ceramic capacitor as a bypass capacitor between V

CC

and

V

SS

.

● Crystal-oscillator circuit

Noise to X0 or X1 pin may cause an error. Make a design for printed board to closely allocate X0, X1, crystal oscillator

(or ceramic oscillator), bypass capacitor towards ground and the device.

It is recommended to make a printed board artwork which surrounds X0 and X1 pins using ground.

The above recommendations also apply to the subclock oscillator pins X0A and X1A.

● NC and OPEN pin termination

Do not terminate NC pin and OPEN pin to use.

● Mode pins (from MD0 to MD2)

Connect pins from MD0 to MOD2 directly to V

CC

or V

SS

to use. To avoid entering test mode due to noise, make a short

pattern length between each mode pin on printed board and V

CC

or V

SS

to connect pins at low impedance.

● At the time of power-on

Immediately after power-on operation, be sure to reset INIT pin to initialize the setting (INIT). Immediately after power-

on operation, to ensure the oscillation stabilization time required for oscillation circuit, hold “L”-level input to the pin

during the oscillation stabilization time required for oscillation circuit. (INIT operation on the pin initializes the setting for

oscillation stabilization time to minimum value.)

● Source oscillation input at the time of power-on

At the time of power-on, be sure to input the clock until the oscillation stabilization wait is over.

2

Chapter 1 Introduction

1.How to Handle the Device

● Caution: during the PLL clock operation

Even if oscillator is disconnected or input is stopped while selecting PLL clock, self-excited oscillation circuit in the PLL

may continue running at self-running frequency. This self-running operation is not covered by guarantee.

● For more specification about operating voltage, see the latest data sheet.

3

Chapter 1 Introduction

2.Instruction for Users

2. Instruction for Users

■ Clock Controls

By inputting “L” to INIT, ensure clock oscillation stabilization time.

■ Switching of dual-purpose port

Use PFR (Port function register) to switch between PORT and dual-purpose port.

■ Low-power-consumption mode

• For standby mode, enable synchronous standby (TBCR.SYNCS=“1”) and then use the following sequences.

In addition, after returning from standby, set I flag, ILM and ICR in order to branch to interrupt handler which

triggered the return.

• If you use monitor debugger, you should avoid the following.

• Do not set breakpoints for command sequence above.

• Do not conduct stepwise execution for command sequence above.

■ Power-on sequence

Power-on and power-off sequence valid for MB91V460 Rev.A. Please review the datasheets of the flash

devices for a valid power-on and power-off sequence on those devices.

Power-on sequence: (1) VDD5 , VDD35, HVDD5, VDD5R (2) AVCC, AVRH, V0-V3

Power-off sequence: (1) AVCC, AVRH, V0-V3 (2) VDD5 , VDD35, HVDD5, VDD5R

The power supply V3 for LCD must not exceed VDD5. The power-on of V3 should be carried out after power-

on of VDD5R and VDD5. To power on analogue power supply AVCC and analogue signal, power VDD5R and

VDD5 on before.

■ Power supply operating conditions

Power supply recommendation valid for MB91V460 Rev.A. Please review the datasheets of the flash devices

for a recommendation of the power supply conditions on those devices.

[VDD5 = HVDD5 = AVCC] >= VDD35. This is the recommended condition.

value_of_standby is a write data to STCR#value_of_standby, R0

#_STCR, R12

R0, @R12

@R12, R0

_STCR is the STCR address. (481H)

Write to Standby Control Register (STCR).

STCR read for synchronous standby.

Dammy read STCR again.

NOP x 5 for timing adjustment.

(LDI

STB

LDUB

NOP

4

Chapter 1 Introduction

2.Instruction for Users

■ Caution: PS register

Because some commands previously proceed PS register, interrupt processing routine may be broken during

the use of debugger or displayed data on PS flag may be updated due to the following excecptional operations

((1) and (2)).

In each case, it is designed to correctly re-proceed operations after the return, the operation before and after

EIT is carried out in accordance with the specification.

• In immediately preceding DIV0U or DIV0S command,

• If interrupted by user,

• If stepwise execution is carried out,

• If data event or emulator menu made a break,

The following operation may be generated.

1. D0 or D1 flag is updated ahead.

2. EIT processing routine (interruption by user or emulator) is carried out.

3. After the return from EIT, it executes DIV0U or DIV0S command and then D0 or D1 flag are updated

to the same value as 1.

• If you execute each command of ORCCR, STILM, MOV Ri or PS to enable interruption with

interruption by user generated, the following operation may be generated.

4. PS register is updated ahead.

5. EIT processing routine (interruption by user) is carried out.

6. After the return from EIT, it executes commands above, and then PS register is updated to the same

value as 1.

■ Watchdog timer function

Watchdog timer function equipped with FR60 monitors the progress to ensure that program executes reset

delay operation within a specified time and resets CPU if reset delay operation was not executed due to

runaway of program. Once you enable watchdog timer function, it continues running until it is reset.

By way of exception, reset delay is automatically conducted under the condition where CPU program

execution is stopped. For this exceptional condition, see “Chapter 20 Software Watchdog Timer (Page

No.273)“.

■ Register against read/modify/write command

SMR register within UART cannot use read/modify/write command. To write in SMR register, write by Byte/

Half-word/Word in consideration with write control bit (bit-5, 4, 2, 0) rather than accessing by bit-by-bit.

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Fujitsu FR60, MB91460 User manual

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