Datasheet

8 Channel Capacitive Touch Sensor with 8 LED Drivers
Datasheet
Revision 1.32 (01-05-12) 12 SMSC CAP1188
DATASHEET
APPLICATION NOTE: For the 5V tolerant pins that have a pull-up resistor, the pull-up voltage must not exceed 3.6V
when the CAP1188 is unpowered.
APPLICATION NOTE: The SPI_CS# pin should be grounded when SMBus, I
2
C, or BC-Link communications are
used.
The pin types are described in Table 1.2. All pins labeled with (5V) are 5V tolerant.
Table 1.2 Pin Types
PIN TYPE DESCRIPTION
Power This pin is used to supply power or ground to the device.
DI Digital Input - This pin is used as a digital input. This pin is 5V tolerant.
AIO Analog Input / Output -This pin is used as an I/O for analog signals.
DIOD
Digital Input / Open Drain Output - This pin is used as a digital I/O. When it is used as an
output, it is open drain and requires a pull-up resistor. This pin is 5V tolerant.
OD
Open Drain Digital Output - This pin is used as a digital output. It is open drain and requires
a pull-up resistor. This pin is 5V tolerant.
DO
Push-pull Digital Output - This pin is used as a digital output and can sink and source
current.
DIO Push-pull Digital Input / Output - This pin is used as an I/O for digital signals.