SNC725 データシートの表示（PDF） - Sonix Technology Co., Ltd

部品番号

コンポーネント説明

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SNC725

16-bit Voice Processor

Sonix Technology Co., Ltd 

SNC725

16-bit Voice Processor

7. I/O PORT

SNC725 provides one a 16-bit I/O port and an 8-bit input port for user application

(P0.0~P0.15, P1.0~P1.7). The input pull high resistor of each pin can be programmed by

Port Pull-High register. The direction of I/O port is selected by Port Direction register. The

Port0 (P0.0~P0.15) and Port1 (P1.0~P1.7) can wake the chip up from the stop mode and

watch mode. P0.15 can be modulated with a 38.5Khz carry signal to realize IR signal

transmission.

Pull-Up

Select

PAD

Pull-Up

Resister

In/Out

Control

Latch

to internal bus

In/Out

Control

I/O Configuration of P0.0~P0.15

Pull-Up

Select

PAD

Pull-Up

Resister

Input Control

Digital In

Input Port Configuration of Port 1 (P1.0~P1.7)

Ver:1.2

5

October 23, 2002

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