SNC729 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

メーカー

SNC729

16-bit Voice Processor

Sonix Technology Co., Ltd 

Preliminary

SNC729

16-bit Voice Processor

7. I/O PORT

SNC729 provides one a 24-bit I/O 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.

When user uses GPIO to wake up chip, the GPIO must setting to input mode and Pull-High all

I/O pin.

Pull-Up

Select

PAD

Pull-Up

Resister

In/Out

Control

In/Out

Control

Latch

to internal bus

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

Ver. 1.6

9

March 7, 2007

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