Silicon Laboratories CPT007B User Manual page 8

5. Peripherals
The starter kit has a set of peripherals that showcase some of the features of the CPT007B device.
Be aware that some CPT007B I/O routed to peripherals are also routed to the breakout pads. This must be taken into consideration
when using the breakout pads for your application.
5.1 Capacitive Sense Touch Pads
The kit has 7 capacitive sense touch pads. The touch pads are connected in order to pins CS00 - CS06 of the CPT007B SLEXP8007A.
After the touch pad inputs have been processed by the touch qualification engine, the CPT007B SLEXP8007A will output the result
through GPIO.
The capacitive sense inputs can be configured for different thresholds, debounce counter values, scan periods, gain, scanning meth-
ods, touch time-outs, and touch exclusiveness using the [Xpress Configurator] in Simplicity Studio. The device outputs can also be
configured for different pin polarities and drive strength.
See the CPT007B SLEXP8007A Data Sheet for more detailed information on the different configurations.
CPT007B
Device
5.2 LEDs and Buzzer
The device features LEDs and a buzzer to provide feedback to the user when using the device.
There are 7 LEDs located above the capacitive sense touch pads and corresponds 1-to-1 to the touch pads. The LEDs are connected
to the CPT007B on the OUTn pins.
The board's buzzer is located to the bottom left of the board and is connected to the CPT007B on the BUZZER pin.
The LED and BUZZER outputs can be configured to be active or inactive when the touch pads are touched using Configurator.
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CS00
CS00
CS01
CS01
CS02
CS02
CS03
CS03
CS04
CS04
CS05
CS05
CS06
CS06
Figure 5.1. Capacitive Sense Touch Pads
OUT00
OUT01
OUT02
OUT03
OUT04
OUT05
OUT06
BUZZER
BUZZER
CPT007B
Device
Figure 5.2. LEDs and Buzzer
UG132: CPT007B SLEXP8007A Kit User's Guide
CS05 CS03
CS06 CS04
LED0
LED1
LED2
LED3
LED4
Buzzer and
LED5
LED6
LEDs
Peripherals
CS01
CS02 CS00
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