PCF8575 查看數據表（PDF） - NXP Semiconductors.

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产品描述 (功能)

生产厂家

PCF8575

Remote 16-bit I/O expander for I2C-bus

NXP Semiconductors. 

Philips Semiconductors

Remote 16-bit I/O expander for I2C-bus

4 BLOCK DIAGRAM

Product specification

PCF8575

handbook, full pagewidth

1

INT

A0

21

2

A1

A2

3

22

SCL

23

SDA

INTERRUPT

LOGIC

PCF8575

LP FILTER

INPUT

FILTER

I2C-BUS

CONTROL

SHIFT

16 BITS

REGISTER

I/O

PORT

P00 to P07

4 to 11

P10 to P17

13 to 20

VDD

24

VSS

12

POWER-ON

RESET

WRITE pulse

READ pulse

MGL537

Fig.1 Block diagram.

1999 Apr 07

4

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