PCA6107 Datasheet, PDF (4/24 Pages) Texas Instruments – REMOTE 8-BIT I2C AND SMBus LOW-POWER I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

PCA6107
REMOTE 8-BIT I²C AND SMBus LOW-POWER I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS139B – JANUARY 2006 – REVISED OCTOBER 2006
www.ti.com
SIMPLIFIED SCHEMATIC OF P0
Data From
Shift Register
Data From
Shift Register
Write Configuration
Pulse
Write Pulse
Configuration
Register
DQ
FF
C_K Q
Read Pulse
DQ
FF
C_K Q
Output
Port
Register
Input
Port
Register
DQ
FF
C_K Q
Output Port
Register Data
P0
ESD Protection Diode
GND
Input Port
Register Data
Data From
Shift Register
Write Polarity Pulse
A. On power up or reset, all registers return to default values.
DQ
FF
C_K Q
Polarity
Inversion
Register
Polarity
Register Data
4
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