pca9539d NXP Semiconductors, pca9539d Datasheet - Page 4

• Manufacturer Part Number: pca9539d
• Description: 16-bit I2c And Smbus, Low Power I/o Port With Interrupt And Reset
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
2006 Sep 21
16-bit I
I/O port with interrupt and reset
2
C-bus and SMBus low power
RESET
SDA
SCL
V
V
SS
A0
A1
DD
PCA9539
FILTER
INPUT
POWER-ON
RESET
NOTE: ALL I/Os ARE SET TO INPUTS AT RESET
Figure 3. Block diagram
I
CONTROL
2
C/SMBUS
4
WRITE pulse
WRITE pulse
READ pulse
READ pulse
8-BIT
8-BIT
OUTPUT
OUTPUT
PORTS
PORTS
INPUT/
INPUT/
FILTER
LP
SW02202
V
CC
I/O1.0
I/O1.1
I/O1.2
I/O1.3
I/O1.4
I/O1.5
I/O1.6
I/O1.7
I/O0.0
I/O0.1
I/O0.2
I/O0.3
I/O0.4
I/O0.5
I/O0.6
I/O0.7
INT
PCA9539
Product data sheet