TCA9535 Datasheet, PDF (7/32 Pages) Texas Instruments – LOW VOLTAGE 16-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT AND CONFIGURATION REGISTERS

TCA9535
www.ti.com........................................................................................................................................... SCPS201A – AUGUST 2009 – REVISED SEPTEMBER 2009
Data Output
by Transmitter
Data Output
by Receiver
NACK
ACK
SCL From
Master
S
Start
Condition
1
2
8
Figure 3. Acknowledgment on I²C Bus
9
Clock Pulse for
Acknowledgment
Interface Definition
BYTE
BIT
7 (MSB)
6
5
4
3
2
1
0 (LSB)
I²C slave address
L
H
L
L
A2
A1
A0
R/W
P0x I/O data bus
P07
P06
P05
P04
P03
P02
P01
P00
P1x I/O data bus
P17
P16
P15
P14
P13
P12
P11
P10
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