Datasheet

8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
SMSC CAP1188 31 Revision 1.32 (01-05-12)
DATASHEET
4.1 Power States
The CAP1188 has three operating states depending on the status of the STBY and DSLEEP bits.
When the device transitions between power states, previously detected touches (for inactive channels)
are cleared and the status bits reset.
Figure 4.1 System Diagram for CAP1188
CAP1188
CS6
SMDATA / BC_DATA / SPI_MSIO / SPI_MISO
SMCLK / BC_CLK / SPI_CLK
Embedded Controller
VDD
ALERT# / BC_IRQ#
CS7
CS8
3.3V – 5V
CS3
CS2
CS1
WAKE / SPI_MOSI
CS4 CS5
RESET
SPI_CS#
ADDR_COMM
LED8
LED7
LED6
LED5
LED1
LED2
LED3
LED4
3.3V – 5V
Touch
Button
Touch
Button
Touch
Button
Touch
Button
Touch
Button
Touch
Button
Touch
Button
Touch
Button