M34551E8 datasheet, PDF - EEWORLD Datasheet

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M34551E8: Description4-BIT SINGLE-CHIP MICROCOMPUTER　　　　　　　; File Size986KB，154 Pages; ManufacturerMitsubishi; Websitehttp://www.mitsubishielectric.com/semiconductors/

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4-BIT SINGLE-CHIP MICROCOMPUTER　　　　　　　

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ADVANCED AND EVER ADVANCING

MITSUBISHI ELECTRIC

MITSUBISHI 4-BIT SINGLE-CHIP MICROCOMPUTER

4500 SERIES

4551

Group

User’s Manual

MITSUBISHI

ELECTRIC

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

DESCRIPTION ................................................................................................................................ 1-3

FEATURES ...................................................................................................................................... 1-3

PIN CONFIGURATION (TOP VIEW) ........................................................................................... 1-3

APPLICATION ................................................................................................................................ 1-3

BLOCK DIAGRAM ......................................................................................................................... 1-4

PERFORMANCE OVERVIEW ....................................................................................................... 1-5

DEFINITION OF CLOCK AND CYCLE ....................................................................................... 1-5

PIN DESCRIPTION ........................................................................................................................ 1-6

MULTIFUNCTION ................................................................................................................... 1-7

CONNECTIONS OF UNUSED PINS ................................................................................... 1-7

PORT FUNCTION .................................................................................................................. 1-7

PORT BLOCK DIAGRAMS .................................................................................................. 1-8

FUNCTIONAL BLOCK OPERATIONS ...................................................................................... 1-10

CPU ........................................................................................................................................ 1-10

PROGRAM MEMORY (ROM) ............................................................................................. 1-13

DATA MEMORY (RAM) ...................................................................................................... 1-14

INTERRUPT FUNCTION ..................................................................................................... 1-15

EXTERNAL INTERRUPTS .................................................................................................. 1-18

TIMERS ................................................................................................................................. 1-20

WATCHDOG TIMER ............................................................................................................ 1-24

CARRIER GENERATING CIRCUIT ................................................................................... 1-25

LCD FUNCTION ................................................................................................................... 1-28

RESET FUNCTION .............................................................................................................. 1-32

VOLTAGE DROP DETECTION CIRCUIT ......................................................................... 1-34

POWER DOWN FUNCTION ............................................................................................... 1-35

CLOCK CONTROL .............................................................................................................. 1-38

ROM ORDERING METHOD ....................................................................................................... 1-39

LIST OF PRECAUTIONS ............................................................................................................ 1-40

SYMBOL ........................................................................................................................................ 1-41

LIST OF INSTRUCTION FUNCTION ........................................................................................ 1-42

INSTRUCTION CODE TABLE .................................................................................................... 1-44

MACHINE INSTRUCTIONS ........................................................................................................ 1-46

CONTROL REGISTERS .............................................................................................................. 1-60

BUILT-IN PROM VERSION ........................................................................................................ 1-64

PIN CONFIGURATION (TOP VIEW) ......................................................................................... 1-64

4551 Group User’s Manual

M34551E8 Related Products

	M34551E8	M34551M8	M34551M4	M34551
Description	4-BIT SINGLE-CHIP MICROCOMPUTER	4-BIT SINGLE-CHIP MICROCOMPUTER	4-BIT SINGLE-CHIP MICROCOMPUTER	4-BIT SINGLE-CHIP MICROCOMPUTER

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