Touch sensing Library for STM8L - Evaluation board

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.

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




Technical Documentation

Product Specifications
Description Version Size
DB1034 DB1034: STM8L evaluation board with touch-sensing library 1.4 103 KB
User Manuals
Description Version Size
UM0949 UM0949: STMT/8L-EV1 STM8L evaluation board with touch-sensing library 2.1 1 MB


License Agreement
Description Version Size
Evaluation products license agreement 1.4 128 KB
Open Reference Material License Agreement v5 42 KB

Tools and Software

Embedded Software
MCUs Embedded Software
Support & Community

Sample & Buy

Part Number Marketing Status Unit Price (US$) * Quantity Specific features ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STMT/8L-EV1 Active 49 1 - NEC 3A991A2 - MORE INFO No availability reported, please contact our Sales office

(*) 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

Quality & Reliability

Part Number Marketing Status RoHS Compliance Grade Material Declaration**
STMT/8L-EV1 ActiveEcopack1

(**) 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.