pca9539d NXP Semiconductors, pca9539d Datasheet - Page 15

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

Philips Semiconductors
2006 Sep 21
16-bit I
I/O port with interrupt and reset
RESET
SDA
SCL
I/Ox
2
C-bus and SMBus low power
50%
t
REC
START
OUTPUT
30%
INPUT
SDA
SDA
SCL
SCL
INT
Figure 17. Expanded view of Write to output port register
Figure 16. Expanded view of Read input port register
2
2
Figure 15. Definition of RESET timing
t
IV
1
1
15
0
0
t
PS
A
A
t
t
IR
PV
t
PH
50%
P
P
t
W
ACK OR READ CYCLE
SW02329
SW02330
t
t
RESET
RESET
70 %
30 %
50 %
70 %
30 %
50 %
50%
50%
I/O configured as inputs
PCA9539
Product data sheet
SW02340