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TCA8418E Datasheet, PDF (14/35 Pages) Texas Instruments – I2C CONTROLLED KEYPAD SCAN IC WITH INTEGRATED ESD PROTECTION | |||
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TCA8418E
SCPS222B â MAY 2010 â REVISED SEPTEMBER 2010
www.ti.com
Table 4. Register Descriptions (continued)
ADDRESS
0Ã13
0Ã14
0Ã15
0Ã16
0Ã17
0Ã18
0Ã19
0Ã1A
0Ã1B
0Ã1C
0Ã1D
0Ã1E
0Ã1F
0Ã20
0Ã21
0Ã22
0Ã23
0Ã24
0Ã25
0Ã26
0Ã27
REGISTER NAME
GPIO_INT_STAT3
GPIO_DAT_STAT1
(read twice to clear)
GPIO_DAT_STAT2
(read twice to clear)
GPIO_DAT_STAT3
(read twice to clear)
GPIO_DAT_OUT1
GPIO_DAT_OUT2
GPIO_DAT_OUT3
GPIO_INT_EN1
GPIO_INT_EN2
GPIO_INT_EN3
KP_GPIO1
KP_GPIO2
KP_GPIO3
GPI_EM1
GPI_EM2
GPI_EM3
GPIO_DIR1
GPIO_DIR2
GPIO_DIR3
GPIO_INT_LVL 1
GPIO_INT_LVL 2
REGISTER
DESCRIPTION
GPIO interrupt status
GPIO data status
7
N/A
0
R7DS
GPIO data status
C7DS
GPIO data status
GPIO data out
GPIO data out
GPIO data out
GPIO interrupt enable
GPIO interrupt enable
GPIO interrupt enable
Keypad or GPIO
selection
0: GPIO
1: KP matrix
Keypad or GPIO
selection
0: GPIO
1: KP matrix
Keypad or GPIO
selection
0: GPIO
1: KP matrix
GPI event mode 1
GPI event mode 2
GPI event mode 3
GPIO data direction
0: input
1: output
GPIO data direction
0: input
1: output
GPIO data direction
0: input
1: output
GPIO edge/level detect
0: low
1: high
GPIO edge/level detect
0: low
1: high
N/A
0
R7DO
0
C7DO
0
N/A
0
R7IE
0
C7IE
0
N/A
0
ROW7
0
COL7
0
N/A
0
ROW7
0
COL7
0
N/A
0
R7DD
0
C7DD
0
N/A
0
R7IL
0
C7IL
0
6
N/A
0
R6DS
C6DS
N/A
0
R6DO
0
C6DO
0
N/A
0
R6IE
0
C6IE
0
N/A
0
ROW6
0
COL6
0
N/A
0
ROW6
0
COL6
0
N/A
0
R6DD
0
C6DD
0
N/A
0
R6IL
0
C6IL
0
5
N/A
0
R5DS
C5DS
N/A
0
R5DO
0
C5DO
0
N/A
0
R5IE
0
C5IE
0
N/A
0
ROW5
0
COL5
0
N/A
0
ROW5
0
COL5
0
N/A
0
R5DD
0
C5DD
0
N/A
0
R5IL
0
C5IL
0
4
N/A
0
R4DS
3
2
1
N/A N/A C9IS
0
0
0
R3DS R2DS R1DS
0
C8IS
0
R0DS
C4DS C3DS C2DS C1DS C0DS
N/A
0
R4DO
0
C4DO
0
N/A
0
R4IE
0
C4IE
0
N/A
0
N/A
0
R3DO
0
C3DO
0
N/A
0
R3IE
0
C3IE
0
N/A
0
N/A
0
R2DO
0
C2DO
0
N/A
0
R2IE
0
C2IE
0
N/A
0
C9DS
R1DO
0
C1DO
0
C9DO
0
R1IE
0
C1IE
0
C9IE
0
C8DS
R0DO
0
C0DO
0
C8DO
0
R0IE
0
C0IE
0
C8IE
0
ROW4 ROW3 ROW2 ROW1 ROW0
0
0
0
0
0
COL4 COL3 COL2 COL1 COL0
0
0
0
0
0
N/A
N/A N/A COL9 COL8
0
0
0
0
0
ROW4
0
COL4
0
N/A
0
ROW3
0
COL3
0
N/A
0
ROW2
0
COL2
0
N/A
0
ROW1
0
COL1
0
COL9
0
ROW0
0
COL0
0
COL8
0
R4DD R3DD R2DD R1DD R0DD
0
0
0
0
0
C4DD C3DD C2DD C1DD C0DD
0
0
0
0
0
N/A
N/A N/A C9DD C8DD
0
0
0
0
0
R4IL
0
R3IL R2IL R1IL
0
0
0
R0IL
0
C4IL
0
C3IL C2IL C1IL
0
0
0
C0IL
0
14
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