4250 Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC

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производитель

4250

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

MITSUBISHI ELECTRIC  

PORT BLOCK DIAGRAMS (CONTINUED)

External interrupt

EXF0

Key-on wakeup

input

Register A

One-sided edge

detection circuit

K02 Rising

0

1

Falling

IAG instruction

A0

OGA instruction

DQ

T

MITSUBISHI MICROCOMPUTERS

4250 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

Pull-up transistor

PU00

(Note 1)

G0/INT

K01

Key-on wakeup

input

Register A

IAG instruction

Timer 1 underflow

signal output

A1

DQ

OGA instruction T

1/2

1

0

V13

Pull-up transistor

PU00

(Note 1)

G1/TOUT

Key-on wakeup

input

Register A

K01

IAG instruction

(Note 2) Ak

OGA instruction

DQ

T

Pull-up transistor

PU00

(Note 1)

G2, G3

Notes 1:

This symbol represents

a parasitic diode.

Applied potential to ports G0–G3

must be VDD or less.

2: k represents 2 or 3.

MITSUBISHI

10

ELECTRIC

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