Fujitsu MB91460 User Manual

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FUJITSU SEMICONDUCTOR

CM71-xxxxx-1E

CONTROLLER MANUAL

FR60

32-BIT MICROCONTROLLER

MB91460 Series

User’s Manual

Version 1.00

2006-10-22

- PRELIMINARY -

FUJITSU LIMITED

FR60

32-BIT MICROCONTROLLER

MB91460 Series

User’s Manual

¥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.

©2004 FUJITSU LIMITED Printed in 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

i

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

ii

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

iii

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

iv

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

v

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

vi

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

 

vii

 

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

 

viii

 

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

ix

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

x

xi

xii

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 VCC or lower than VSS, or a voltage higher than the maximum rating voltage is applied between VCC and VSS. 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 VCC and VSS 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 VCC and VSS 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 VCC and VSS.

● 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 VCC or VSS to use. To avoid entering test mode due to noise, make a short pattern length between each mode pin on printed board and VCC or VSS 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 poweron operation, to ensure the oscillation stabilization time required for oscillation circuit, hold ÒLÓ-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.

1

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.

2

Chapter 1 Introduction

2.Instruction for Users

2. Instruction for Users

Clock Controls

By inputting ÒLÓ 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=Ò1Ó) and then use the following sequences.

(LDI

#value_of_standby, R0

value_of_standby is a write data to STCR

(LDI

#_STCR, R12

_STCR is the STCR address. (481H)

STB

R0, @R12

Write to Standby Control Register (STCR).

LDUB

@R12, R0

STCR read for synchronous standby.

LDUB

@R12, R0

Dammy read STCR again.

NOP

 

NOP x 5 for timing adjustment.

NOP

 

 

NOP

NOP

NOP

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 poweron 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.

3

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 ÒChapter 20 Software Watchdog Timer (Page No.273)Ò.

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.

4

Chapter 1 Introduction

2.Instruction for Users

Caution: writing to registers which include a status flag

Writing to a register including a status flag (in particular, interrupt request flag) in order to control the function, note that you should not clear status flag unintentionally.

That is, take care not to clear the flag for status bit and make control bit to be the expected value during the writing.

Especially, for control bits consisting of several bits, bit command is not available since single bit access is only acceptable for bit command, you should write into the both of control bit and status flag at the same time by Byte/Half-word/Word access. In this case, you should not clear other bits (bits of status flag) unintentionally. The following shows registers which mostly include both of several bits and status flag.

¥TBCR

¥OSCR

¥TWCR

¥TCCS0, TCCS1

¥ICS01

¥TMCSR0, TMCSR1, TMCSR2, TMCSR3

¥PCN00, PCN01, PCN02,...

¥ADCSL0, ADCSL1

¥CCR0, CCR1

Note: For bit command, you do not have to be careful since this matter has been already considered.

Caution: writing to registers which include a status flag

Writing to a register including a status flag (in particular, interrupt request flag) in order to control the function, note that the actual writing to the registers may be delayed. This is because of using write buffers on the busses to the resources which accept a write access from CPU immediately but can access the resource registers delayed.

In this case it can happen that within an ISR the interrupt request flag is cleared by writing to the register and the ISR is completed with RETI, but the interrupt request flag is still active and the ISR is executed again.

To synchronize the access to the resources on this architecture please follow this recommendation:

Use a read access (byte or halfword) to the RBSYNC address to synchronize the CPU operation (e.g. the interrupt acceptance of the CPU) to a preceding write access to the resources on R-bus (e.g. to an interrupt flag) on following addresses (0x0000-0x01FF, 0x0280-0x037F, 0x0400-0x063F and 0x0C00-0x0FFF).

Use a read access (byte or halfword) to the CBSYNC address to synchronize the CPU operation (e.g. the interrupt acceptance of the CPU) to a preceding write access to the CANs on D-bus (e.g. to an interrupt flag) on following addresses (0xC000-0xFFFF).

5

Chapter 1 Introduction

3.Caution: debug-related matters

3. Caution: debug-related matters

Stepwise execution of RETI command

Under the circumstances where interruption is often generated when carrying out stepwise execution, only relevant interrupt processing routine is repeatedly executed after the stepwise execution of RETI. Therefore, main routine or low-level interruption program will not be executed.

To avoid this problem, do not proceed stepwise execution of RETI command.

Or, upon the time when no debug is needed for relevant interrupt routine, proceed the debug by prohibiting relevant interruptions.

Operand break

Do not set the access for area including system stack pointer address as the target for data event break.

6

Chapter 1 Introduction

4.How to Use This Document

4. How to Use This Document

Main terminology: This table shows main terminology used for FR60.

Term

Meaning

 

 

 

32-bit-wide bus for internal instruction.

I-bus

Since FR60 series employ internal Harvard architecture, instruction and data are independent bus. For I-bus,

 

Harverd/Prinston-bus-converter is connected.

 

 

 

Internal 32-bit-wide data bus.

D-bus

For D-bus, bit search module, Harverd/Prinston-bus-converter, R-bus interface (32-bit 16-bit Bus-

 

converter), and CAN modules are connected.

 

 

F-bus

Internal 32-bit-wide bus.

F-bus is connected to embedded Flash/ROM and embedded RAM.

 

 

 

 

Internal 16-bit-wide data bus.

R-bus

R-bus is connected to D-bus via R-bus-converter. For R-bus, peripheral function, I/O, clock generator and

 

interrupt controller are connected.

 

 

X-bus

32-bit-wide address and data bus. Via bus-converter for external bus, it accesses to external bus.

 

 

Main clock

This a clock which acts as a benchmark for LSI operation triggered by high-speed-side oscillation.

(FCL-MAIN)

This is connected to main clock oscillation stabilization timer and clock generator.

Subclock

This a clock which acts as a benchmark for LSI operation triggered by low-speed-side oscillation.

(FCL-SUB)

This is connected to sub oscillation stabilisation timer, real-time clock and clock generator.

Base clock

At the maximum speed, base clock has the same cycle as source oscillation. In PLL of the clock generator,

base clock has clock multiplied by 1, 2, 3, 4, 5, 6, 7 and 8 or clock divided by 2.

(Φ)

Base clock is basis clock which generates CLKB, CLKP and CKLT in the clock generator.

 

 

 

CPU clock

CPU clock is the clock which is referred by CPU, embedded ROM, embedded RAM, bit search module and

(CLKB)

internal bus (I-bus, D-bus, F-bus and X-bus) operations. Generated from the base clock in the clock generator.

 

 

Peripheral clock

Peripheral clock is the clock which is referred by each peripheral function (peripheral functions other than bit

search module and CAN) connected to R-bus and R-bus, clock control, interrupt controller, I/O port and

(CLKP)

external interrupt input d operations. Generated from the base clock in the clock generator.

 

 

 

External bus clock

External bus clock is the clock which is referred by external expansion bus interface connected to X-BUS and

(CLKT)

external clock output operations. Generated from the base clock in the clock generator.

 

 

CAN clock

CAN clock is the clock which is referred by the CAN modules. Generated from the non modulated PLL

(CLKCAN)

output clock to ensure operation within CAN network oscillation tolerances.

 

 

Main clock mode

Mode which runs based on main clock. This main clock mode has status such as main RUN, main sleep, main

stop, oscillation stabilization wait RUN, oscillation stabilization wait reset and program reset.

 

 

 

Subclock mode

Mode which runs based on subclock. This subclock mode has status such as sub RUN, sub sleep, sub stop,

subclock oscillation stabilization wait RUN and program reset.

 

 

 

Main RUN

Main RUN is the status which is in main clock mode and also all circuits are operable.

 

 

Sub RUN

Sub RUN is the status which is in subclock mode and also all circuits are operable.

 

 

Oscillation

Upon the reset (INITX, RST), return from stop, return from PLL abnormal operation, generation of watchdog

and during main clock stop, it takes oscillation stabilization time for main clock. Time base timer counts the

stabilization time

time.

 

 

 

Main clock

Wait time until main clock oscillates after main clock stops in subclock mode.

oscillation

Main clock oscillation stabilization timer counts the time.

stabilization wait

 

 

 

7

Chapter 1 Introduction

4.How to Use This Document

Access size and address position

 

 

 

 

Offset

Register name

Write-only

Read-only

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address offset value/Register name

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Address

 

 

 

 

 

Block

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Up/down counter 0, 1

Read/write

Initial value

Byte access, Half-word access, and Word access are allowed.

There are three kinds of accesses such as Byte access, Half-word access and Word access. However, note that some registers have restricted access. For more information, see Ò3.2. I/O Map (Page No.24)Ó or ÒDetail Description of RegisterÓ in each chapter.

B,H,W

: Byte access, Half-word access, and Wordaccess are allowed.

B

: Byte access (Be sure to access by Byte.)

H

: Half-word access (Be sure to access by Half-word.)

W

: Word access (Be sure to access by Word.)

B, H

: Byte access, Half-word access only (Word access is not allowed.)

H,W

: Half-word access, Word access only (Byte access is not allowed.)

Reference

The following describes address position to access.

¥In Word access, address becomes multiple of 4. (Lowest order 2 bits mandatorily become Ò00Ó.)

¥In Half-word access, address becomes multiple of 2. (Lowest order 1 bit mandatorily becomes Ò0Ó.)

¥In Byte access, address will not be changed.

Therefore, for example, make RCR0 register to use Half-word access, For address 0B0H, RCR1+RCR0 register is accessed.

(When address offset is +1 and +2, (Example: RCR0+UDCR1) Half-word access is not allowed.)

8

Fujitsu MB91460 User Manual

Chapter 1 Introduction

4.How to Use This Document

About access size and bit position

Register name Register mark

Target peripheral device Address

Access size

Bit position

(1) Counter control register (Higher byte)

This is the register (higher byte) which controls up/down counter operation.

CCRH0 (Up/down counter 0): address 00B4h (Access: Byte, Half-word, Word)

CCRH1 (Up/down counter 1): address 00B8h (Access: Byte, Half-word, Word)

 

M16E/Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Initial value

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Attribute

*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bit15: Enable 16-bit mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M16E (CCRH0 only)

Enable 16-bit mode

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8-bit x 2-channel mode (8-bit mode)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16-bit x 1-channel mode (16-bit mode)

 

*: CCRH1: ReservedAlways write 0 for writing. The read value is indeterminate.

When access size changes, bit position changes.

¥ In the case that address offset value is +0 (Example: CCRH0 register)

Access size

 

Address

 

 

 

Bit position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Byte

 

0B4H+0H

07

06

05

04

03

02

01

00

Half-word

 

0B4H+0H

15

14

13

12

11

10

09

08

Word

 

0B4H+0H

31

30

29

28

27

26

25

24

Bit name

 

M16E

CDCF

CFIE

CLKS

CMS1

CMS0

CES1

CES0

 

 

 

 

 

 

 

 

 

 

 

¥ In the case that address offset value is +1 (Example: CCRL0 register)

Access size

 

Address

 

 

 

Bit position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Byte

 

0B4H+1H

07

06

05

04

03

02

01

00

Half-word

 

0B4H+0H

07

06

05

04

03

02

01

00

Word

 

0B4H+0H

23

22

21

20

19

18

17

16

Bit name

 

Reserved

CTUT

UCRE

RLDE

UDCC

CGSC

CGE1

CGE0

 

 

 

 

 

 

 

 

 

 

 

¥ In the case that address offset value is +2 (Example: UDCR1 register)

Access size

 

Address

 

 

 

Bit position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Byte

 

0B0H+2H

07

06

05

04

03

02

01

00

Half-word

 

0B0H+2H

15

14

13

12

11

10

09

08

Word

 

0B0H+0H

15

14

13

12

11

10

09

08

Bit name

 

D15

D14

D13

D12

D11

D10

D9

D8

 

 

 

 

 

 

 

 

 

 

 

¥ In the case that address offset value is +3 (Example: UDCR 1 register)

Access size

 

Address

 

 

 

Bit position

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Byte

 

0B0H+3H

07

06

05

04

03

02

01

00

Half-word

 

0B0H+2H

07

06

05

04

03

02

01

00

Word

 

0B0H+0H

07

06

05

04

03

02

01

00

Bit name

 

D7

D6

D5

D4

D3

D2

D1

D0

 

 

 

 

 

 

 

 

 

 

 

9

Chapter 1 Introduction

4.How to Use This Document

Meaning of Bit Attribute Symbols

R

: Readable

W

: Writable

RM

: Reading operation during read/modify/write operation.

 

Ò/Ó (Slash) R/W: Readable and writable. (The read value is the value written.)

 

Ò,Ó (comma) R,W: Values are different between read and write. (The read value is different from

 

the value written.)

R0

: The read value is Ò0Ó.

R1

: The read value is Ò1Ó.

W0

: Always write Ò0Ó.

W1

: Always write Ò1Ó.

(RM0)

: read/modify/write operation reads Ò0Ó.

(RM1)

: read/modify/write operation reads Ò1Ó.

RX

: The read value is indeterminate. (Reserved bit or undefined bit)

WX

: Writing does not affect the operation. (Undefined bit)

• Example of how R/W is used

¥

R/W

: Readable and writable. (The read value is the value written.)

¥

R,W

: Readable and writable. (The read value and written value are different.)

¥

R,RM/W

: Readable and writable. (The read value and written value are different. Read/modify/write

 

 

command reads the value written.) Example: port data register

¥

R(RM1),W

: Readable and writable. (The read value and written value are different. Read/modify/write

 

 

command reads 1.) Example: interrupt request flag

¥

R/WX

: Read-only (Read-only. Writing does not affect the operation.)

¥

R1,W

: Write-only (Write-only. The read value is 1.)

¥

R0,W

: Write-only (Write-only. The read value is 0.)

¥

RX,W

: Write-only (Write-only. The read value is indeterminate.)

¥

R/W0

: Reserved bit (The written value is 0. The read value is the value written.)

¥

R0/W0

: Reserved bit (The written value is 0. The read value is 0.)

¥

R1,W0

: Reserved bit (The written value is 0. The read value is 1.)

¥

RX,W0

: Reserved bit (The written value is 0. The read value is indeterminate.)

¥

R/W1

: Reserved bit (The written value is 1. The read value is the value written.)

¥

R1/W1

: Reserved bit (The written value is 1. The read value is 1.)

¥

R0,W1

: Reserved bit (The written value is 1. The read value is 0.)

¥

RX,W1

: Reserved bit (The written value is 1. The read value is indeterminate.)

¥

RX/WX

: Undefined bit (The read value is indeterminate. Writing does not affect the operation.)

¥

R0/WX

: Undefined bit (The read value is 0. Writing does not affect the operation.)

10

Chapter 2 MB91460 Rev.A/Rev.B Overview

1.Overview

Chapter 2 MB91460 Rev.A/Rev.B Overview

1. Overview

MB91460 is a series of standard microcontrollers containing a range of I/O peripherals and bus control functions. MB91460 features a 32-bit RISC CPU (FR60 series) core and is suitable for embedded control applications requiring high-performance and high-speed CPU processing. MB91460 derivatives also contain up to 16 kByte instruction cache memory and other internal memories to improve the execution speed of the CPU.

MB91460 Rev.B has the same features as MB91460 Rev.A and adds some additional components in order to support infotainment applications. Which components and modules will be included in MB91460 Rev.B is not yet decided finally. So this document gives only a proposal at this stage of development.

MB91460 Rev.B : This series is presently being specified, and not available yet.

2. Features

2.1FR60 CPU Core

¥32-bit RISC, load/store architecture, pipeline 5 stages

¥Maximum operating frequency: Core clock = 100 MHz (device dependent) (Source oscillation= 4 MHz, multiplied by 25 (PLL clock multiplier method))

¥General-purpose registers: 16 x 32 bits

¥16-bit fixed-length instruction (Base instruction)

¥32-bit linear address space: 4 Gbytes

¥Instructions suitable for embedded application

¥Transfer command between memories

¥Bit-processing instruction

¥Barrel-shift instructions

¥Instructions supporting C-language

¥Function's enter command /exit command

¥Multi-load/store command of register contents

¥Assembler statement is also easily available Register's interlock function

¥Multiplier's embedded application/command level support

¥Signed 32-bit multiplication: 5 cycles

¥Signed 16-bit multiplication: 3 cycles

¥Interrupt (PC/PS are saved): 6 cycles (16 priority level)

¥Harvard architecture enables simultaneous execution of program access and data access

¥Memory protection function

¥Embedded debug support

¥Commands compatible with FR family

2.2Instruction Cache

¥2 way set associative I-cache

¥Up to 4 kByte integrated

11

Chapter 2 MB91460 Rev.A/Rev.B Overview

2.Features

¥4 words (16 bytes) per set

¥Variable capacity (4/2/1 kB)

¥Lock function enabling programs to be resident

¥Available as instruction RAM requiring no wait state when not used as an instruction cache

¥Direct mapped I-cache

¥Up to 16 kByte integrated

¥Variable capacity (16/8/4/2/1 kB)

¥Lock function enabling programs to be resident

2.3Interrupt Controller

¥A total of 17 external interrupt lines (1 nonmaskable interrupt pin, 8 normal interrupt pins, 8 interrupt pins shared (with peripheral inputs for Wake Up from STOP mode, e.g. CAN RX)

¥Interrupts from internal peripherals (128 interrupt vectors)

¥Priority levels programmable for normal interrupt lines excluding the nonmaskable one (16 levels)

¥Capable of using the normal interrupt and nonmaskable interrupt pins for Wake Up from STOP mode

2.4Internal Data RAM

¥Up to 64 kBytes integrated

¥Zero wait state for read/write access

Referenced as Data-RAM or D-RAM in this manual

2.5Internal Instruction/Data RAM

¥Up to 64 kBytes integrated

¥Zero wait state for read/write access of instructions

¥One wait state for read/write access of data

• Referenced as General-Purpose-RAM (GP-RAM) or I/D-RAM in this manual

2.6Embedded Instruction/Data Memory

¥Up to 4 MByte (Flash or Mask ROM)

¥Programmable wait state for read/write access

¥Flash/ROM security

2.7External Bus Interface

¥8 chip select areas with individual area size, data bus width selection (8, 16, 32-bit) and wait

¥Address bus up to 32 bit wide

¥Programmable auto-wait function or external wait input (RDY)

¥Basic bus cycles : 2 cycles

¥Prefetch function

¥Burst access function

2.8DMA Controller

¥Four transfer modes supported: single/block, burst, continuous transfer, and fly-by

¥5 channels (4 channels for external-to-external transfer)

12

Chapter 2 MB91460 Rev.A/Rev.B Overview

2.Features

¥3 types of transfer sources (external pins/internal peripherals/and software)

¥Up to 128 selectable internal transfer sources

¥Addressing mode: Specifying up to 32-bit addresses (Increment/decrement/fixed)

¥Transfer mode (Demand transfer/burst transfer/step transfer/block transfer)

¥Fly-by transfer supported (between external I/O and memory)

¥Transferred data size selectable from among 8, 16, and 32 bits

2.9Infotainment extension (MB91460 Rev.B)

¥Inter-IC sound bus (I2S)

¥master or slave operation

¥operation up to 2.5 MBit/s

¥MOST support (MediaLB for controlling an external MOST IC is integrated)

¥Digital interface to external MOST controller

¥Frame sync pattern support

¥Scalable data rate for streaming, packet, control, isochronous

¥System-broadcast channel for administration

¥Broadcast support for synchronous data

¥USB

¥USB 1.1 compliant up to 12Mbit/s (USB 2.0 tbd)

¥Configurable endpoints

¥Supports control, bulk, interrupt and isochronous transfer

¥built-in FIFO for all endpoints

¥clock and data recovery

¥Flexray

¥Event or Time triggered protocol

¥Asynchronous or synchronous operation

¥Fault tolerant operation (2 channels supported)

¥Static and dynamic data transfer

¥Transfer rates up to 10 MBit/s

¥Ethernet

MB91460 Rev.B : This series is presently being specified and not available yet.

13

Chapter 2 MB91460 Rev.A/Rev.B Overview

2.Features

2.10Peripheral Function

¥General-purpose port : Up to 288

¥N channel open drain port out of above: 8 (for I2C)

¥A/D converter : 32 channels (1 unit)

¥Series-parallel type

¥Resolution: 10 bits

¥Minimum conversion time: 3us

¥Single conversion mode

¥Continuous conversion mode

¥Stop conversion mode

¥Activation by software or external trigger can be selected

¥Reload timer 7 and A/D Converter co-operate

¥D/A converter : 2 channels

¥R-2R type

¥Resolution: 10 bits

¥Conversion rate: 0.45us (when 20 pF load is applied)

¥Conversion rate: 2us (when 100 pF load is applied)

¥Alarm comparator : 2 channels

¥Monitors an external voltage and generates an interrupt in case of a voltage lower or higher than the defined thresholds

¥Status is readable, interrupts can be masked separately

¥External interrupt input : 16 channels

¥Can be programmed to be edge sensitive or level sensitive

¥Interrupt mask and request pending bits per channel

¥6 channels combined with CAN RX for wakeup

¥Non maskable interrupt (NMI) : 1 channel

¥Highest priority of all user interrupts

¥Bit search module (using REALOS)

¥Function to search the first bit position of Ò1Ó, Ò0Ó, ÒChangedÓ from MSB (most significant bit) within 1 word

¥Up/down counter : 16 bits x 2 channels (8 bits x 4 channels)

¥Timer mode, up/down count mode, phase difference mode (x2, x4)

¥Includes clock prescaler (fRES/21, fRES/23)

¥Reload timer : 16 bits x 8 channels

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