July 2011 Doc ID 16361 Rev 3 1/18
UM0817
User Manual
STM8S-DISCOVERY
Introduction
The STM8S-DISCOVERY is a quick start evaluation board which helps you to discover the
STM8 features, and to develop and share your own application. It is based on an STM8S105
and includes an embedded debugger, ST-LINK, and a touch sensing button. Numerous
applications are available from the STM8S-Discovery web page.
Features
■ STM8S105C6T6 microcontroller, 32 KB Flash, 2 KB RAM, 1 KB EEPROM
■ Powered by USB cable between PC and STM8S-DISCOVERY
■ Selectable power of 5 V or 3.3 V
■ Touch Sensing button, TS1
■ User LED, LD1
■ Extension header for all I/Os
■ Wrapping area for users own application
■ Embedded ST-LINK for STM8S
■ USB interface for programming and debugging
■ SWIM debug support
Figure 1. STM8S-DISCOVERY evaluation board
www.st.com
Contents UM0817
2/18 Doc ID 16361 Rev 3
Contents
1 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Hardware and layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 STM8S105C6T6 microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 ST-LINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.1 Using the ST-LINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.2.2 Using the ST-LINK on other STM8S applications . . . . . . . . . . . . . . . . . . 8
2.3 Power supply and power selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.4 Single touch sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Daughterboard connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4 Mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Electrical schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
