STMicroelectronics UM0817 Technical data

UM0817

User Manual

STM8S-DISCOVERY

evaluation board

Introduction

STM8S-DISCOVERY is a quick start evaluation board which helps you to discover the
STM8 features , and to develop and share your own appl ication. It is based on an
STM8S105C6T6 and includes an embedded debugger, ST-LINK, and a touch sensing
button. Numerous applications are available.

Features

■ STM8S105C microcontroller

■ Powered by USB cable between PC and STM8S-DISCOVERY

■ Selectable power of 5 V or 3.3 V

■ Embedded ST-Link for STM8S

■ USB interface for programming and debugging

■ SWIM debug support

■ Touch Sensing button, TS1

■ User LED, LD1

■ Extension header for all I/Os

■ Wrapping area for users own application

Figure 1. STM8S-DISCOVERY evaluation board

October 2009 Doc ID 16361 Rev 1 1/17

www.st.com

Contents UM0817

Contents

1 Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Hardware and la yout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 STM8S105C6 microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 ST-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2.1 Using the ST-Link . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2.2 Using the ST-Link on other applications . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3 Power supply and power selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Single touch sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3 Daughter board connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4 Electrical schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

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UM0817 Quick start

1 Quick start

It is very simple to get started using the STM8S-DISCOVERY evaluation board, just follow
these four steps:

1. Connect the STM8S-DISCOVERY board to a PC with a USB cable.

2. Press the TS1 button, Observe LED LD1 blinking.

3. Press the TS1 button to change b linking speed.

4. Connect to www.st.com/stm8s-discovery and follow the tutorial.
The STM8S-DISCOVERY evaluation board helps yo u to develop and share your own

application. You can discover more of the STM8S features by downloading and executing
the proposed programs in the project list.

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Hardware and layout UM0817

2 Hardware and layout

The STM8S-DISCOVERY evaluation board is designed around the STM8S105C6
microcontroller in an LQFP48 package. It has two distinct sections that may be separated,
the STM8S105C6 module and the ST-Link module.

Figure 2 illustrates the connections between the STM8S105C6 and its peripherals (ST-

LINK, touch-sensing button, LED and connectors).

Figure 3 helps you to locate these features on the STM8S-DISCOVERY board, as well as

the potential point of separat ion (f or more details ref er to Section 2.2.2: Using the ST-Link on

other applications).

Figure 2. Hardware block diagram

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UM0817 Hardware and layout

Figure 3. Top layout

USB connector
ST-Link JTAG
USB data transfer LED

ST-LINK core

ST-LINK module

SWIM connector

STM8S105C6 module

LED (LD1)

Possible separation point

Power supply jumper

External Osc. (16 MHz)
STM8S105C6

Touch sensing button (TS1)

Wrapping area

SO16 footprint

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Hardware and layout UM0817

2.1 STM8S105C6 microcontroller

Figure 4. STM8S105C6 package

The STM8S105C6 8-bit microcontroller offers:

32 Kbytes of Flash program memory, and
1 Kbyte true data EEPROM.

This device provides the following benefits:

● Reduced system cost

– Integrated true data EEPROM for up to 300 K write/erase cycles
– High system integration le vel; internal clock oscillators, brown- out reset, watchdog.

● Performance and robustness

– 1 6 MHz CPU clock frequency
– Up to 38 I/Os on a 48-pin package including 16 high sink outputs
– Robust I/O immune against current injection
– Independent watchdogs with separate clock source
– Flexible clock control, 4 master clocks (HSI, LSI, HSE and external HSE)
– Clock security system
– A family of products for applications with 2.95 V to 5.5 V operating supply

● Short development cycles

– Applications scalability across common family product architecture with

compatible pinout, memory map and modular peripher als.
– Full documentation and a wide choice of development tools
– S tandard S/W library for firmware development quick start
– Numerous application notes and firmware examples available

● Product longevity

– Advanced core and peripherals made in state-of-the-art technology
– Low power modes (wait, active-halt, halt)
– Auto wake-up timer for active halt
– Permanently active, low consumption

● Other features

– Nested interrupt controller with 32 interrupts
– Up to 37 e xternal interrupts on 6 vectors
– 2 x 16-bit general purpose timers; with 2+3 CAPCOM channels (IC, OC or PWM)
– A dvanced control timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs,

dead- time insertion and flexible synchronization
– 8-bit basic timer with 8-bit prescaler
– UART with clock output for synchronous operation, Smartcard, IrDA, LIN
– SPI interface up to 8 Mbit/s
– I2C interface up to 400 Kbit/s
– Analog-to-digital con v erter 10-bit, ±1 LSB ADC with up to 10 multiple x ed channels

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