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Touch sensing Library for STM8L - Evaluation board
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STMT/8L-EV1 is the STM8L evaluation board with a touch-sensing library which enables designers, who are familiar with the standard STM8Lxxx microcontrollers, to create higher-end look-and-feel user interfaces by replacing conventional electromechanical switches with touch-sensing controls. Designers can thus combine touch-sensing functions with traditional MCU features such as communication, LED control, beeper, LCD control, and so on.

The touch-sensing library is a complete, free source-code solution to transform any 8-bit STM8L microcontroller into a capacitive touchkey controller.

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Data Brief

Key Features

  • Hardware solution designed with an STM8L151 device in a 48-pin LQFP package
  • Touch-sensing interface offering 10 touchkeys, 1 wheel and 1 slider
  • LCD display to report touchkeys, wheel and slider status and parameters
  • Configurable operation: debounce, low-power mode duration, recalibration time-out, wheel/slider resolution.
  • Embedded ST-Link interface for user firmware evaluation
  • Touch-sensing library featuring:
  • Robust and proven charge-transfer acquisition principle
  • Excellent immunity against conductive noise
  • Supports up to 16 capacitive sensing channels
  • Low BOM with only 1 I/O per channel + 1 I/O per acquisition group for sampling capacitors
  • Up to 8-bit resolution wheel/slider using 3 channels
  • Fast acquisition time (typically 2 ms for touchkey, 7 ms for wheel/slider)
  • Advanced processing featuring: Autocalibration, Debounce filtering, Environment control system (ECS), Detection exclusion system
  • Free C source code library


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1034: STM8L evaluation board with touch-sensing library
1.3 103 KB

User Manual

Description Version Size
UM0949: STMT/8L-EV1 STM8L evaluation board with touch-sensing library
2.1 1,547 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STSW-STM8038 STMT/8L-EV1 STM8L evaluation board

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusSpecific featuresOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STMT/8L-EV1Active-49No availability reported, please contact our Sales officeEcopack1-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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