Datasheet

Data From
Shift Register
Write Configuration
Pulse
Write Pulse
Read Pulse
Write Polarity Pulse
Polarity
Inversion
Register
Input
Port
Register
Output
Port
Register
Configuration
Register
V
CCP
GND
Input Port
Register Data
Polarity
Register Data
ESD Protection Diode
P00 to P27
Output Port
Register Data
To INT
Q1
Q2
D
FF
C
K
Q
Q
D
FF
C
K
Q
Q
D
FF
C
K
Q
Q
D
FF
C
K
Q
Q
Data From
Shift Register
Data From
Shift Register
TCA6424A
www.ti.com SCPS193B –JULY 2010–REVISED SEPTEMBER 2010
Simplified Schematic of P00 to P27
A. On power up or reset, all registers return to default values.
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Product Folder Link(s): TCA6424A