M34551 View Datasheet(PDF) - MITSUBISHI ELECTRIC

Part Name

Description

View to exact match

M34551

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for INFRARED REMOTE CONTROL TRANSMITTER

MITSUBISHI ELECTRIC  

MITSUBISHI MICROCOMPUTERS

4551 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER for

INFRARED REMOTE CONTROL TRANSMITTER

PORT BLOCK DIAGRAMS

Key-on wakeup

input

Register A

Ai

IAP0 instruction

Pull-up

transistor (Note 1)

P00–P03

Ai

DQ

OP0A instruction T

Key-on wakeup

input

PU0i

Register A

Ai

IAP1 instruction

Pull-up

transistor

(Note 1)

P10–P13

Ai

DQ

LCD control signal

OP1A instruction

T

LCD power supply

(Note 1)

Connected to when selecting SEG

P20/SEG16–P23/SEG19

L2i IAP2 instruction

Register A

Register Y

SD instruction

RD instruction

Decoder

CLD

instruction

LCD

power

supply

S

RQ

Register Y

SD instruction

RD instruction

Register Y

Decoder

CLD

instruction

SD instruction

RD instruction

Decoder

INT input

CLD instruction

S

RQ

S

RQ

MR2

0

1

MR2

Register Y

SD instruction

RD instruction

Decoder

CLD

instruction

XCIN clock

S

RQ

MR2

0

1

(Note 1)

D0–D4

(Note 1)

D5/INT

(Note 1)

D6/XCIN

MR2

(Note 1)

D7/XCOUT

Notes 1:

This symbol represents a parasitic diode.

2: i represents bit 0, 1, 2 or 3.

6

Share Link: