Datasheet

8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
Revision 1.32 (01-05-12) 10 SMSC CAP1188
DATASHEET
3
SMDATA /
BC_DATA /
SPI_MSIO /
SPI_MISO
SMDATA - Bi-directional, open-drain SMBus data
- requires pull-up resistor
DIOD (5V)
n/a
BC_DATA - Bi-directional, open-drain BC-Link data
- requires pull-up resistor
DIO
SPI_MSIO - SPI Master-Slave-In-Out bidirectional
port when used in bi-directional mode
DIO
SPI_MISO - SPI Master-In-Slave-Out port when
used in normal mode
DO
4
SMCLK /
BC_CLK /
SPI_CLK
SMCLK - SMBus clock input - requires pull-up
resistor
DI (5V)
n/a
BC_CLK - BC-Link clock input DI (5V)
SPI_CLK - SPI clock input DI (5V)
5 LED1
Open drain LED 1 driver (default) OD (5V)
Connect to
Ground
Push-pull LED 1 driver DO
leave open or
connect to
Ground
6 LED2
Open drain LED 2 driver (default) OD (5V)
Connect to
Ground
Push-pull LED 2 driver DO
leave open or
connect to
Ground
7 LED3
Open drain LED 3 driver (default) OD (5V)
Connect to
Ground
Push-pull LED 3 driver DO
leave open or
connect to
Ground
8 LED4
Open drain LED 4 driver (default) OD (5V)
Connect to
Ground
Push-pull LED 4 driver DO
leave open or
connect to
Ground
9 LED5
Open drain LED 5 driver (default) OD (5V)
Connect to
Ground
Push-pull LED 5 driver DO
leave open or
connect to
Ground
10 LED6
Open drain LED 6 driver (default) OD (5V)
Connect to
Ground
Push-pull LED 6 driver DO
leave open or
connect to
Ground
Table 1.1 Pin Description for CAP1188 (continued)
PIN # PIN NAME PIN FUNCTION PIN TYPE
UNUSED
CONNECTION