M34250M2 查看數據表（PDF） - Renesas Electronics

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M34250M2

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

Renesas Electronics 

MITSUBISHI MICROCOMPUTERS

4250 Group

SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

PORT FUNCTION

Port

Pin

Port D

D0, D1

D2/C

D3/K

Port S S0–S3

Port G G0/INT

G1/TOUT

G2, G3

Port F F0, F1

Input/

Output

Output structure

I/O N-channel open-drain

(4)

I/O N-channel open-drain

(4)

I/O N-channel open-drain

(4)

I/O N-channel open-drain

(2)

Control Control Control

bits instructions registers

1 SD

RD

PU0

SZD

CLD

SCP

RCP

SNZCP

OKA

IAK

4 OSA

K0

IAS

LO

LGOP

4 OGA

IAG

PU0, K0

2 OFA

IAF

PU0, K0

V1

PU0, K0

Remark

Pull-up function

(programmable)

Logic operation function

(programmable)

Key-on wakeup functions

(programmable)

Pull-up functions

Key-on wakeup functions

(only pull-up function is

programmable)

Pull-up functions

(programmable)

Key-on wakeup functions

(programmable)

DEFINITION OF CLOCK AND CYCLE

• System clock

This is the source clock input to the XIN pin. Connect pins XIN

and XOUT directly. Then, pull up XIN pin through a resistor and

pull down XOUT pin through a capacitor.

• Instruction clock

The instruction clock is a signal derived by dividing the system

clock by 4, and is the basic clock for controlling this product.

• Machine cycle

One machine cycle is the time required to execute the minimum

instruction (one-cycle instruction). The machine cycle is

equivalent to the instruction clock cycle.

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