UPD75212ACW データシートの表示（PDF） - NEC => Renesas Technology

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UPD75212ACW

4-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

P03/SI

P02/SO

Fig 5-7 Serial Interface Block Diagram

SIO0

8

8

Shift Register (8)

Internal Bus

SIO7

SIO

8

SET1 *2

SIOM7SIOM6SIOM5SIOM4SIOM3SIOM2SIOM1SIOM0

SIOM

*1

SO Output

Latch

P01/SCK

Serial Clock

Counter (3)

Overflow

Clear

R

Q

S

* 1. CMOS output and N-ch open drain output switchable output buffer.

2. Instruction execution

MPX

Serial Start

Φ

fxx/24

fxx/210

INTSIO

IRQSIO

Set Signal

IRQSIO

Clear Signal

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