TCA8418 Datasheet, PDF (23/37 Pages) Texas Instruments – I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION

TCA8418
www.ti.com ......................................................................................................................................................................................... SCPS215 – SEPTEMBER 2009
SCL
123456789
Data from Port
Data from Port
SDA
S
0
1
0
0
0
0
AD
DR
1
A
Data 1 1 A
Data 4
Read From
Port
Data Into
Port
R/W Acknowledge
From Slave
Acknowledge
From Master
AP
Acknowledge
From Master
INT
t_iv
t_ir
Figure 12. Read From Input Port Register
Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): TCA8418
Submit Documentation Feedback
23