TCA8418E_15 Datasheet, PDF (26/50 Pages) Texas Instruments – I2C Controlled Keypad Scan IC With Integrated ESD Protection

TCA8418E
SCPS222C – MAY 2010 – REVISED OCTOBER 2015
www.ti.com
ADDRESS
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
Table 9. Register Descriptions
REGISTER NAME
Reserved
CFG
INT_STAT
REGISTER
DESCRIPTION
Reserved
Configuration register
(interrupt processor interrupt
enables)
Interrupt status register
KEY_LCK_EC
Key lock and event counter register
KEY_EVENT_A
Key event register A
KEY_EVENT_B
Key event register B
KEY_EVENT_C
Key event register C
KEY_EVENT_D
Key event register D
KEY_EVENT_E
Key event register E
KEY_EVENT_F
Key event register F
KEY_EVENT_G
Key event register G
KEY_EVENT_H
Key event register H
KEY_EVENT_I
Key event register I
KEY_EVENT_J
KP_LCK_TIMER
UNLOCK1
UNLOCK1
GPIO_INT_STAT1
Key event register J
Keypad lock 1 to lock 2 timer
Unlock key 1
Unlock key2
GPIO interrupt status
GPIO_INT_STAT2
GPIO interrupt status
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 interrupt status
GPIO data status
GPIO data status
GPIO data status
7
6
5
AI
N/A
0
N/A
0
KEA7
0
KEB7
0
KEC7
0
KED7
0
KEE7
0
KEF7
0
KEG7
0
KEH7
0
KEI7
0
KEJ7
0
KL7
UK1_7
UK2_7
R7IS
0
C7IS
0
N/A
0
R7DS
C7DS
N/A
0
GPI_E_CGF
OVR_FLOW_
M
N/A
N/A
0
0
K_LCK_EN
LCK2
KEA6
0
KEB6
0
KEC6
0
KED6
0
KEE6
0
KEF6
0
KEG6
0
KEH6
0
KEI6
0
KEJ6
0
KL6
UK1_6
UK2_6
R6IS
0
C6IS
0
N/A
0
KEA5
0
KEB5
0
KEC5
0
KED5
0
KEE5
0
KEF5
0
KEG5
0
KEH5
0
KEI5
0
KEJ5
0
KL5
UK1_5
UK2_5
R5IS
0
C5IS
0
N/A
0
R6DS
R5DS
C6DS
N/A
0
C5DS
N/A
0
4
3
2
INT_ CFG
OVR_FLOW K_LCK_IE
_IEN
N
CAD_INT
OVR_FLOW K_LCK_IN
_INT
T
LCK1
KLEC3
KLEC2
KEA4
0
KEB4
0
KEC4
0
KED4
0
KEE4
0
KEF4
0
KEG4
0
KEH4
0
KEI4
0
KEJ64
0
KL4
UK1_4
UK2_4
R4IS
0
C4IS
0
N/A
0
KEA3
0
KEB3
0
KEC3
0
KED3
0
KEE3
0
KEF3
0
KEG3
0
KEH3
0
KEI3
0
KEJ3
0
KL3
UK1_3
UK2_3
R3IS
0
C3IS
0
N/A
0
KEA2
0
KEB2
0
KEC2
0
KED2
0
KEE2
0
KEF2
0
KEG2
0
KEH2
0
KEI2
0
KEJ2
0
KL2
UK1_2
UK2_2
R2IS
0
C2IS
0
N/A
0
R4DS
R3DS
R2DS
C4DS
N/A
0
C3DS
N/A
0
C2DS
N/A
0
1
GPI_IEN
GPI_ INT
KLEC1
KEA1
0
KEB1
0
KEC1
0
KED1
0
KEE1
0
KEF1
0
KEG1
0
KEH1
0
KEI1
0
KEJ1
0
KL1
UK1_1
UK2_1
R1IS
0
C1IS
0
C9IS
0
R1DS
C1DS
C9DS
0
KE_IEN
K_ INT
KLEC0
KEA0
0
KEB0
0
KEC0
0
KED0
0
KEE0
0
KEF0
0
KEG0
0
KEH0
0
KEI0
0
KEJ0
0
KL0
UK1_0
UK2_0
R0IS
0
C0IS
0
C8IS
0
R0DS
C0DS
C8DS
26
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