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7471: 产品描述8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES; 文件大小4MB，共361页; 制造商Renesas(瑞萨电子); 官网地址https://www.renesas.com/

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7471概述

8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES

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To all our customers

Regarding the change of names mentioned in the document, such as Mitsubishi

Electric and Mitsubishi XX, to Renesas Technology Corp.

The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas

Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog

and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.)

Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi

Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names

have in fact all been changed to Renesas Technology Corp. Thank you for your understanding.

Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been

made to the contents of the document, and these changes do not constitute any alteration to the

contents of the document itself.

Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices

and power devices.

Renesas Technology Corp.

Customer Support Dept.

April 1, 2003

keep safety first in your circuit designs !

Mitsubishi Electric Corporation puts the maximum effort into making semiconductor

products better and more reliable, but there is always the possibility that trouble

may occur with them. Trouble with semiconductors may lead to personal injury,

fire or property damage. Remember to give due consideration to safety when

making your circuit designs, with appropriate measures such as (i) placement

of substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention

against any malfunction or mishap.

Notes regarding these materials

These materials are intended as a reference to assist our customers in the

selection of the Mitsubishi semiconductor product best suited to the customer’s

application; they do not convey any license under any intellectual property rights,

or any other rights, belonging to Mitsubishi Electric Corporation or a third party.

Mitsubishi Electric Corporation assumes no responsibility for any damage, or

infringement of any third-party’s rights, originating in the use of any product

data, diagrams, charts or circuit application examples contained in these materials.

All information contained in these materials, including product data, diagrams

and charts, represent information on products at the time of publication of these

materials, and are subject to change by Mitsubishi Electric Corporation without

notice due to product improvements or other reasons. It is therefore recommended

that customers contact Mitsubishi Electric Corporation or an authorized Mitsubishi

Semiconductor product distributor for the latest product information before

purchasing a product listed herein.

Mitsubishi Electric Corporation semiconductors are not designed or manufactured

for use in a device or system that is used under circumstances in which human

life is potentially at stake. Please contact Mitsubishi Electric Corporation or an

authorized Mitsubishi Semiconductor product distributor when considering the

use of a product contained herein for any specific purposes, such as apparatus

or systems for transportation, vehicular, medical, aerospace, nuclear, or undersea

repeater use.

The prior written approval of Mitsubishi Electric Corporation is necessary to

reprint or reproduce in whole or in part these materials.

If these products or technologies are subject to the Japanese export control

restrictions, they must be exported under a license from the Japanese government

and cannot be imported into a country other than the approved destination.

Any diversion or reexport contrary to the export control laws and regulations of

JAPAN and/or the country of destination is prohibited.

Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi

Semiconductor product distributor for further details on these materials or the

products contained therein.

Table of contents

CHAPTER 1. HARDWARE

1.1

1.2

1.3

1.4

1.5

1.6

1.7

Description .............................................................................................................................. 1-2

Group expansion ................................................................................................................... 1-3

Performance overview .......................................................................................................... 1-6

Pin configuration ................................................................................................................. 1-10

Pin description ..................................................................................................................... 1-14

Functional block diagram .................................................................................................. 1-17

Central processing unit (CPU) .........................................................................................1-23

1.7.1 Accumulator (A) ........................................................................................................... 1-24

1.7.2 Index register X (X), Index register Y (Y) .............................................................. 1-24

1.7.3 Stack pointer (S) ......................................................................................................... 1-24

1.7.4 Program counter (PC)................................................................................................. 1-26

1.7.5 Processor status register (PS) ..................................................................................1-26

1.8

Access area .......................................................................................................................... 1-28

1.8.1 Zero page (Addresses 0000

to 00FF

) .............................................................. 1-29

1.8.2 Special page (Addresses FF00

to FFFF

) ........................................................ 1-29

1.9

Memory allocation ............................................................................................................... 1-30

1.10.1 I/O port ....................................................................................................................... 1-35

1.10.2 Port block diagram .................................................................................................... 1-40

1.10.3 Notes on use ............................................................................................................. 1-45

1.11 Interrupts ............................................................................................................................... 1-48

1.11.1 Description of interrupt source ............................................................................... 1-48

1.11.2 Operation description ................................................................................................ 1-52

1.11.3 Interrupt control ......................................................................................................... 1-55

1.11.4 Notes on use ............................................................................................................. 1-57

1.11.5 Related registers ....................................................................................................... 1-59

1.12 Timers ..................................................................................................................................... 1-62

1.12.1 Operation description ................................................................................................ 1-64

1.12.2 Description of modes ................................................................................................ 1-65

1.12.3 Input latch function ................................................................................................... 1-79

1.12.4 Updating of contents of Timer and Timer latch ................................................... 1-80

1.12.5 Notes on use ............................................................................................................. 1-82

1.12.6 Related registers ....................................................................................................... 1-83

1.13 Serial I/O ................................................................................................................................ 1-89

1.13A 7470/7471 group part ..............................................................................................

1-90

1.13A.1 Operation description ............................................................................................. 1-90

1.13A.2 Byte specification mode .........................................................................................1-98

1.13A.3 Pins ......................................................................................................................... 1-101

1.10 I/O pins .................................................................................................................................. 1-35

7470/7471/7477/7478 GROUP USER’S MANUAL

Table of contents

1.13A.4 Notes on use ......................................................................................................... 1-101

1.13A.5 Related registers ...................................................................................................1-102

1.13B 7477/7478 group part ...........................................................................................

1-105

1.13B.1 Operation description .......................................................................................... 1-105

1.13B.2 Pins ......................................................................................................................... 1-127

1.13B.3 Notes on use ......................................................................................................... 1-128

1.13B.4 Related registers ...................................................................................................1-131

1.14 A-D converter ..................................................................................................................... 1-139

1.14.1 A-D conversion method ......................................................................................... 1-140

1.14.2 Pins ........................................................................................................................... 1-144

1.14.3 Notes on use ........................................................................................................... 1-144

1.14.4 References ............................................................................................................... 1-145

1.14.5 Related registers .....................................................................................................1-147

1.15 Reset ..................................................................................................................................... 1-149

1.15.1 Operation description ............................................................................................. 1-149

1.15.2 Internal status immediately after reset release ................................................. 1-151

1.15.3 Notes on use ........................................................................................................... 1-152

1.16 Oscillation circuit .............................................................................................................. 1-153

1.16.1 Oscillation circuit .....................................................................................................1-153

1.16.2 Sub-clock oscillation circuit ................................................................................... 1-155

1.16.3 Oscillation operation ...............................................................................................1-156

1.16.4 Oscillation stabilizing time ..................................................................................... 1-158

1.16.5 Notes on use ........................................................................................................... 1-159

1.17 Low-power dissipation function .................................................................................... 1-160

1.17.1 Stop mode ................................................................................................................ 1-162

1.17.2 Wait mode ................................................................................................................ 1-166

1.17.3 Notes on use ........................................................................................................... 1-169

1.17.4 Related register .......................................................................................................1-170

1.18 State transitions ................................................................................................................ 1-171

1.19 Built-in PROM version ......................................................................................................1-175

1.19.1 EPROM mode .......................................................................................................... 1-176

1.19.2 Pin description ......................................................................................................... 1-182

1.19.3 Writing, reading, and erasing to built-in PROM ................................................ 1-185

1.19.4 Notes on use ........................................................................................................... 1-186

1.20 Emulator MCU .................................................................................................................... 1-188

1.21 Electrical characteristics .................................................................................................1-189

1.21.1 Electrical characteristics ........................................................................................ 1-189

1.21.2 Timing requirements, switching characteristics .................................................. 1-201

1.21.3 Power source current standard characteristics .................................................. 1-203

1.21.4 Port standard characteristics ................................................................................ 1-208

1.21.5 A-D conversion standard characteristics ............................................................ 1-213

7470/7471/7477/7478 GROUP USER’S MANUAL

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器件捷径: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

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