Philips Semiconductors
Product specification
Remote 16-bit I/O expander for I2C-bus
PCF8575
5
PINNING
SYMBOL
PIN
DESCRIPTION
INT
1
2
interrupt output (active LOW)
address input 1
A1
A2
3
address input 2
P00
P01
P02
P03
P04
P05
P06
P07
VSS
P10
P11
P12
P13
P14
P15
P16
P17
A0
4
quasi-bidirectional I/O 00
quasi-bidirectional I/O 01
quasi-bidirectional I/O 02
quasi-bidirectional I/O 03
quasi-bidirectional I/O 04
quasi-bidirectional I/O 05
quasi-bidirectional I/O 06
quasi-bidirectional I/O 07
supply ground
handbook, halfpage
INT
A1
1
2
3
4
5
6
7
8
9
24 V
DD
5
23 SDA
22 SCL
21 A0
6
A2
7
8
P00
P01
P02
P03
P04
P05
9
20 P17
19 P16
18 P15
17 P14
16 P13
15 P12
14 P11
13 P10
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
PCF8575
quasi-bidirectional I/O 10
quasi-bidirectional I/O 11
quasi-bidirectional I/O 12
quasi-bidirectional I/O 13
quasi-bidirectional I/O 14
quasi-bidirectional I/O 15
quasi-bidirectional I/O 16
quasi-bidirectional I/O 17
address input 0
P06 10
P07 11
V
12
SS
MGL538
SCL
SDA
VDD
serial clock line input
serial data line input/output
supply voltage
Fig.2 Pin configuration.
1999 Apr 07
5
NXP [ NXP ]
