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

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PCF8575

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

NXP Semiconductors. 

Philips Semiconductors

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

Product specification

PCF8575

5 PINNING

SYMBOL

INT

A1

A2

P00

P01

P02

P03

P04

P05

P06

P07

VSS

P10

P11

P12

P13

P14

P15

P16

P17

A0

SCL

SDA

VDD

PIN

DESCRIPTION

1 interrupt output (active LOW)

2 address input 1

3 address input 2

4 quasi-bidirectional I/O 00

5 quasi-bidirectional I/O 01

6 quasi-bidirectional I/O 02

7 quasi-bidirectional I/O 03

8 quasi-bidirectional I/O 04

9 quasi-bidirectional I/O 05

10 quasi-bidirectional I/O 06

11 quasi-bidirectional I/O 07

12 supply ground

13 quasi-bidirectional I/O 10

14 quasi-bidirectional I/O 11

15 quasi-bidirectional I/O 12

16 quasi-bidirectional I/O 13

17 quasi-bidirectional I/O 14

18 quasi-bidirectional I/O 15

19 quasi-bidirectional I/O 16

20 quasi-bidirectional I/O 17

21 address input 0

22 serial clock line input

23 serial data line input/output

24 supply voltage

handbook, halfpage

INT 1

A1 2

24 VDD

23 SDA

A2 3

22 SCL

P00 4

21 A0

P01 5

20 P17

P02 6

P03 7

PCF8575

19 P16

18 P15

P04 8

17 P14

P05 9

16 P13

P06 10

15 P12

P07 11

14 P11

VSS 12

13 P10

MGL538

Fig.2 Pin configuration.

1999 Apr 07

5

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