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| TCA9538 Datasheet, PDF (15/37 Pages) Texas Instruments – Low Voltage 8-Bit I2C and SMBus Low-Power I/O Expander | |||
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8.2 Functional Block Diagram
13
INT
1
A0
2
A1
14
SCL
15
SDA
Input
Filter
LP Filter
I2C Bus
Control
TCA9538
SCPS199C â AUGUST 2014 â REVISED OCTOBER 2015
Interrupt
Logic
Shift
Register
8 Bits
I/O
Port
P7âP0
3
RESET
16
VCC
GND
8
Power-On
Reset
Write Pulse
Read Pulse
A. Pin numbers shown are for the PW package.
Figure 13. Functional Block Diagram
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