TCA8418E Datasheet, PDF (3/35 Pages) Texas Instruments – I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION

TCA8418E
www.ti.com
TERMINAL
NO.
WCSP
(YFP)
NAME
A1
ROW7
B1
ROW6
C1
ROW5
D1
ROW4
E1
ROW3
A2
ROW2
C2
ROW1
D2
ROW0
E2
COL0
A3
COL1
B3
COL2
C3
COL3
D3
COL4
E3
COL5
A4
COL6
B4
COL7
C4
COL8
D4
COL9
E4
GND
A5
RESET
B5
V_CC
C5
SDA
D5
SCL
E5
INT
B2
CAD_INT
TERMINAL FUNCTIONS
SCPS222B – MAY 2010 – REVISED SEPTEMBER 2010
TYPE
DESCRIPTION
I/O
GPIO or row 7 in keypad matrix
I/O
GPIO or row 6 in keypad matrix
I/O
GPIO or row 5 in keypad matrix
I/O
GPIO or row 4 in keypad matrix
I/O
GPIO or row 3 in keypad matrix
I/O
GPIO or row 2 in keypad matrix
I/O
GPIO or row 1 in keypad matrix
I/O
GPIO or row 0 in keypad matrix
I/O
GPIO or column 0 in keypad matrix
I/O
GPIO or column 1 in keypad matrix
I/O
GPIO or column 2 in keypad matrix
I/O
GPIO or column 3 in keypad matrix
I/O
GPIO or column 4 in keypad matrix
I/O
GPIO or column 5 in keypad matrix
I/O
GPIO or column 6 in keypad matrix
I/O
GPIO or column 7 in keypad matrix
I/O
GPIO or column 8 in keypad matrix
I/O
GPIO or column 9 in keypad matrix
–
Ground
I
Active-low reset input. Connect to V_CC through a pullup resistor, if no active connection is
used.
Pwr
Supply voltage of 1.65 V to 3.6 V
I/O
Serial data bus. Connect to V_CC through a pullup resistor.
I
Serial clock bus. Connect to V_CC through a pullup resistor.
O
Active-low interrupt output. Open drain structure. Connect to V_CC through a pullup resistor.
O
Active-low interrupt hardware output for 3-key simultaneous press-event. Open drain structure.
Connect to V_CC through a pullup resistor.
Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TCA8418E
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