STEVAL-ICB007V1 Datasheet, PDF (1/4 Pages) STMicroelectronics – Capacitive touch demonstration board based on the STMPE321

STEVAL-ICB007V1
Capacitive touch demonstration board based on the STMPE321
Data brief
Features
• STM32 microcontroller is used as the
main digital controller to interface the
STMPE321 device
• STMPE321 device controls 3 different
touch keys
• Touch events are indicated on the LEDs
• RoHS compliant
Description
The STEVAL-ICB007V1 demonstration board
employs STM32-based capacitive touch to
demonstrate the functionality and performance of
the STMPE321, a 3-channel capacitive touch key
controller.
Capacitance measurement is implemented in
fully optimized hardware, and the 3 I/Os can be
configured as either capacitive touchkeys or as
GPIOs (general purpose input/output). The
device is capable of interfacing with a main digital
ASIC/controller through the 2-line communication
protocol I2C.
In the STEVAL-ICB007V1 demonstration board,
the STM32 microcontroller is used as the main
digital controller to interface with the STMPE321
device. The system utilizes the capacitive
touchkey controller of the STMPE321 and PWM
features of the STM32 to demonstrate the
application.
The STMPE321 controls 3 different touchkeys
using an integrated capacitive touch controller.
Touch events are indicated on the LEDs using
the STM32 GPIO pins, and the corresponding
PWM frequency is generated on a separate LED
using the STM32 timer.
June 2011
DocID018907 Rev 1.0
For further information contact your local STMicroelectronics sales
office.
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