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Capacitive touch daughterboard based on the STMPE821

The STEVAL-ICB002V1 daughterboard is based on the STMPE821 8-channel capacitive touch key controller. This board connects to the STEVALPCC009V3 interface board, which acts as the motherboard, to form the STM32-based capacitive touch demonstration application designed to evaluate the functioning of the STMPE821 device.

The STMPE821 is a GPIO (general purpose input/output) port expander with a built-in capacitive touchkey controller. The device is capable of interfacing with a main digital ASIC/controller using the 2-line communication protocol I2C.

The STM32 microcontroller is used as the main digital controller to interface the STMPE821 device, and utilizes the capacitive touchkey controller, GPIO controller and PWM controller features of the STMPE821 in the application.

The STMPE821 device controls 3 different touchkeys using the integrated capacitive touchkey controller. Touch events are indicated on LEDs using the GPIO controller, and the corresponding PWM frequency is generated on a separate LED using the PWM controller.

The STM32-based STEVAL-PCC009V3 interface board acts as motherboard for the application and connects to the STEVAL-ICB002V1 via a 10-pin connector.

Power to the interface board (motherboard) is provided from a USB Mini-B type connector. The daughterboard is powered from the motherboard via the 10-pin connector.

pdf 下载
Data Brief

Key Features

  • STM32-based STEVAL-PCC009V3 used as motherboard
  • Demonstrates up to 3 capacitive touch keys
  • PWM output / GPIO output features
  • Multiple touch detection
  • RoHS compliant


图案 资源


Technical Documentation

Product Specifications

描述 版本 大小
DB0973: Capacitive touch daughterboard based on the STMPE821
1.1 98 KB

User Manual

描述 版本 大小
UM0868: STM32-based STMPE821 capacitive touch demonstration kit
1.1 1,042 KB

Hardware Resources

Board Manufacturing Specification

描述 版本 大小
Gerber files for STEVAL-ICB002V1 board
1.0 230 KB

Bill of Materials

描述 版本 大小
BOM for STEVAL-ICB002V1 board
1.0 8 KB

Schematic Pack

描述 版本 大小
Board schematics for STEVAL-ICB002V1
1.0 27 KB

Related Tools and Software

Related Tools and Software

产品型号 描述
STSW-ICB002 STMPE821 capacitive touck key controller demo board setup

License Agreement

描述 版本 大小
Demo products licence agreement
1.0 22 KB

样品 & 购买

产品型号 Marketing StatusCore ProductOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ICB002V1NRNDSTMPE821QTRBuy Direct57.87Distributor reported inventory date: 2014-04-15
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA120

(*) 建议零售价格仅用于预算,以美元为单位,每。的报价,以当地货币计算的价格,请联系您当地的 ST 销售办事处 或我们的 分销商
(**) 材料声明表格上提供st.com可以是一般的文件,根据最常用的包,包内的家庭。出于这个原因,他们可能不是100%准确,对于一个特定的设备。请联系我们 销售支持 在特定设备上的信息。
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