8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
Chapter 1 Pin Description
RESET
VDD
CS3
20
CS1
24
23
22
21
CS2
SPI_CS#
WAKE / SPI_MOSI
SMDATA / BC_DATA /
SPI_MSIO / SPI_MISO
SMCLK / BC_CLK /
SPI_CLK
LED1
LED2
1
2
3
4
5
6
10
11
12
7
8
9
19
CS4
18
17
CS5
CS6
CS7
CS8
ADDR_COMM
ALERT# / BC_IRQ#
CAP1088
24 pin QFN
16
15
14
13
GND
LED3
LED4
LED5
LED6
LED7
Figure 1.1 CAP1088 Pin Diagram (24-Pin QFN)
Table 1.1 Pin Description for CAP1088
PIN
NUMBER
1
PIN NAME
SPI_CS#
PIN FUNCTION
Active low chip-select for SPI bus
WAKE - Active high wake / interrupt output -
Standby power state
LED8
PIN TYPE
DI (5V)
DO
DI
DI (5V)
2
WAKE /
SPI_MOSI
WAKE - Active high wake input - requires pull-down resistor
Deep Sleep power state
SPI_MOSI - SPI Master-Out-Slave-In port when used in
normal mode
Revision 1.1 (08-05-09)
8
SMSC CAP1088
DATASHEET
SMSC [ SMSC CORPORATION ]
