STM8S DISCOVERY User Manual
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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. July 2011 STM8S-DISCOVERY evaluation board Doc ID 16361 Rev 3 1/18 www.st.com Contents UM0817 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 2/18 Doc ID 16361 Rev 3 UM0817 1 Quick start Quick start It is very simple to get started using the STM8S-DISCOVERY, just follow these four steps: 1. Connect the STM8S-DISCOVERY to a PC with a USB cable. 2. Press the TS1 button, and observe LED LD1 blinking. 3. Press the TS1 button to change blinking speed. 4. Visit www.st.com/stm8s-discovery and follow the tutorial, then discover other applications. The STM8S-DISCOVERY helps you 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. Note: The software code corresponding to this application is available under the name Discover in the project list of the STM8S-Discovery web page. Doc ID 16361 Rev 3 3/18 Hardware and layout 2 UM0817 Hardware and layout The STM8S-DISCOVERY is designed around the STM8S105C6T6 microcontroller in an LQFP48 package. It has two distinct sections that may be separated, the STM8S105C6T6 module and the ST-LINK module. Figure 2 illustrates the connections between the STM8S105C6T6 and its peripherals (STLINK, 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 separation (for more details refer to Section 2.2.2: Using the ST-LINK on other STM8S applications). Figure 2. Hardware block diagram STM8S105C6T6 4/18 Doc ID 16361 Rev 3 UM0817 Hardware and layout Figure 3. Top layout USB connector ST-LINK module ST-LINK JTAG USB data transfer LED ST-LINK core SWIM connector Possible separation point LED (LD1) Power supply jumper External Osc. (16 MHz) STM8S105C6T6 module STM8S105C6T6 Touch sensing button (TS1) Wrapping area SO16 footprint Doc ID 16361 Rev 3 5/18 Hardware and layout 2.1 UM0817 STM8S105C6T6 microcontroller Figure 4. STM8S105C6T6 package The STM8S105C6T6 8-bit microcontroller offers: 32 Kbytes of Flash program memory 1 Kbyte true data EEPROM 2 Kbytes RAM This device provides the following benefits: ● ● ● ● ● 6/18 Reduced system cost – Integrated true data EEPROM for up to 300 K write/erase cycles – High system integration level; internal clock oscillators, brown-out reset, watchdog. Performance and robustness – 16 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 peripherals. – Full documentation and a wide choice of development tools – Standard S/W library for firmware and touch sensing 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 external interrupts on 6 vectors – 2 x 16-bit general purpose timers; with 2+3 CAPCOM channels (IC, OC or PWM) – Advanced 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 converter 10-bit, ±1 LSB ADC with up to 10 multiplexed channels Doc ID 16361 Rev 3 UM0817 Hardware and layout Figure 5. STM8S105 block diagram For more information see the STM8S105xx datasheet (Doc ID 14771) on the ST website. Doc ID 16361 Rev 3 7/18 Hardware and layout 2.2 UM0817 ST-LINK The ST-LINK provides a USB interface for programming and debugging using a single wire interface module (SWIM). The ST-LINK module of the STM8S-DISCOVERY also supplies 5 V and 3.3 V to the STM8S105C6T6 module. 2.2.1 Using the ST-LINK Figure 6. Typical configuration Hardware requirements: - USB cable type A to B - Computer with Windows 2000, XP or Vista OS Software requirement: ST Toolset (ST Visual Develop and ST Visual Program) which support ST-LINK SWIM Note: The driver for ST-LINK is installed automatically when the USB is connected. For information about debugging and programming features refer to ST-LINK UM0627, UM0036 STVD and RN0011 STVP. For information about SWIM refer to UM0470. 2.2.2 Using the ST-LINK on other STM8S applications You can connect your ST-LINK to other STM8S applications in 2 ways. Note: ● By removing the solder bridges: This way uses the ST-LINK without breaking the PCB. Unsolder the two solder bridges SB1 and SB2 under the SWIM connector. See Figure 7. You can re-solder the two bridges at a later date thus keeping the STM8S-DISCOVERY usable. ● By removing it from your board: This way constitutes a good alternative to programming the STM8S devices in other applications. See Figure 8. This ST-LINK only supports the STM8S family. Do not use it with other STM8 families. Figure 7. ST-LINK without breaking the PCB Remove SB1 and SB2 solder bridges 8/18 Doc ID 16361 Rev 3 UM0817 Hardware and layout Figure 8. Separated ST-LINK module STM8S105C6T6 STM8S105C6 eval board STLink SWIM Warning: By removing this module you will lose power supply on the STM8S105C6T6 evaluation board. In consequence, you will not be able to program and use the STM8S105C6T6 board without a SWIM cable and an external power supply. To reconnect your STM8S105C6T6 use connector CNn see Section 3: Daughterboard connection. 2.3 Power supply and power selection The power supply is provided by a USB connector. Jumper JP1 selects the VDD value (5 V or regulated 3.3 V) see Figure 9. Figure 9. Power selection VDD = 5 V VDD = 3.3 V Doc ID 16361 Rev 3 9/18 Hardware and layout 2.4 UM0817 Single touch sensing A touch sensing button TS1 is available on the STM8S-DISCOVERY (see Figure 10). Figure 10. Touch sensing schematic To disable the touch sensing interface and to use PC1, PC2 and PC3 as standard I/O, you need to unsolder the 2-1 connection and solder 2-3 connection on SB4 and SB3, you also need to unsolder the R2 resistor. RC acquisition principle The RC acquisition method detects a human touch on key touch sensor (TS1) by measuring the small variation of the touch electrode capacitance. Electrode capacitance is periodically charged and discharged through a fixed resistor (R6). The capacitance value depends on the following parameters: electrode area (A), relative dielectric constant of the insulator (eR), the relative permittivity of air (e0) and the distance between the two electrodes. For more information about touch sensing please refer to AN2927. 10/18 Doc ID 16361 Rev 3 UM0817 Daughterboard connection Four 12-pin male headers CN1, CN2, CN3 and CN4 are connected to the STM8S105C6T6 microcontroller. See the following tables for pin assignments. CN1 pinout Pin number Pin number (Cn1) (chip) Pin name Type Table 1. Main function Alternate function 1 1 NRST IO Reset 2 2 OSCIN/PA1 IO Port A1 3 3 OSCOUT/PA2 IO Port A2 4 4 Vssio_1 S I/O ground 5 5 Vss S Digital ground 6 6 VCAP S 1.8V regulator capacitor 7 7 Vdd S Digital power supply 8 8 Vddio_1 S I/O power supply 9 9 PA3 IO Port A3 10 10 PA4 IO Port A4 11 11 PA5 IO Port A5 12 12 PA6 IO Port A6 Table 2. CN2 pinout Pin number Pin number (Cn2) (chip) Pin name Type 3 Daughterboard connection Main function Alternate function 1 25 PE5 IO Port E5 SPI master / slave 2 26 PC1/TS1 IO Port C1 Timer 1 - channel 1 / UART2 synchronous clock 3 27 PC2/TS1_load IO Port C2 Timer 1 - channel2 4 28 PC3 IO Port C3 Timer 1 - channel 3 5 29 PC4 IO Port C4 Timer 1 - channel 4 6 30 PC5 IO Port C5 SPI clock 7 31 Vssio_2 S I/O ground 8 32 Vddio_2 S I/O power supply 9 33 PC6 IO Port C6 SPI master out / slave in 10 34 PC7 IO Port C7 SPI master in / slave out 11 35 PG0 IO Port G0 12 36 PG1 IO Port G1 Doc ID 16361 Rev 3 11/18 Daughterboard connection CN3 pinout Pin name Main function Alternate function 1 13 Vdda S Analog power supply 2 14 Vssa S Analog ground 3 15 PB7 IO Port B7 Analog input 7 4 16 PB6 IO Port B6 Analog input 6 5 17 PB5 IO Port B5 Analog input 5 6 18 PB4 IO Port B4 Analog input 4 7 19 PB3 IO Port B3 Analog input 3 8 20 PB2 IO Port B2 Analog input 2 9 21 PB1 IO Port B1 Analog input 1 10 22 PB0 IO Port B0 Analog input 0 11 23 PE7 IO Port E7 Analog input 8 12 24 PE6 IO Port E6 Analog input 9(2) Type Pin number Pin number (Cn3) (chip) Type Table 3. UM0817 Main function * Table 4. CN4 pinout Pin number Pin number (Cn4) (chip) 12/18 Pin name Alternate function 1 37 PE3 IO Port E3 Timer 1 – break Input 2 38 PE2 IO Port E2 I2C data 3 39 PE1 IO Port E1 I2C clock 4 40 PE0 IO Port E0 Configurable clock output 5 41 PD0/LED IO Port D0 Timer 3 - channel 2 6 42 PD1/SWIM IO Port D1 SWIM data interface 7 43 PD2 IO Port D2 Timer 3 - channel 1 8 44 PD3 IO Port D3 Timer 2 - channel 2 9 45 PD4 IO Port D4 Timer 2 - channel 1 10 46 PD5 IO Port D5 UART2 data transmit 11 47 PD6 IO Port D6 UART2 data receive 12 48 PD7 IO Port D7 Top level interrupt Doc ID 16361 Rev 3 UM0817 4 Mechanical drawing Mechanical drawing Figure 11. STM8S-DISCOVERY Doc ID 16361 Rev 3 13/18 Electrical schematics UM0817 5 Figure 12. STM8S-DISCOVERY U_ST_LINK ST_LINK.SCHDOC Doc ID 16361 Rev 3 RESET# ST_LINK_SWIM U_MCU MCU.SchDoc SB1 SB2 RESET# ST_LINK_SWIM Title: 14/18 STM8S-Discovery Number:MB867 Rev: A.1(PCB.SCH) Date: 5/6/2009 Sheet 1 of 3 Electrical schematics STMicroelectronics 1 2 3 4 CN1 NRST PA2 VDD PA3 PA5 1 VDDA PB7 PB5 PB3 PB1 PE7 LD1 Green 2 ST_LINK_SWIM CN2 PA1 1 2 3 4 5 6 7 8 9 10 11 12 PE5 PC2 PC4 VCAP VDD PA4 PA6 R1 510 1 2 3 4 5 6 7 8 9 10 11 12 EX_PC1 EX_PC3 PC5 1 2 3 4 5 6 7 8 9 10 11 12 PC6 PG0 Header 6X2H Left CN3 VDD UM0817 Figure 13. STM8S-DISCOVERY MCU PC7 PG1 VDD Header 6X2H Right CN4 PE3 PE1 PD0 PD2 PD4 PD6 PB6 PB4 PB2 PB0 PE6 PE2 PE0 PD1 PD3 PD5 PD7 1 2 3 4 5 6 7 8 9 10 11 12 Header 6X2H Down Header 6X2H Top PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 PE0 PE1 PE2 PE3 C1 10nF Extension connector RESET# 1 2 3 4 5 6 7 8 9 10 11 12 VCAP C4 60 C5 PA3 PA4 PA5 PA6 PG1 PG0 PC7 PC6 C2 SB3 solder bridge C6 1uF PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 PE7 PE6 C7 100nF R4 1M SB4 solder bridge R6 10K SB5 <----ESD resistor close to MCU pad 1 1 VDDA BEAD 10K <----Active shield EX_PC1 3 L1 R2 1nF VDD PC5 PC4 PC3 PC2 PC1 PE5 13 14 15 16 17 18 19 20 21 22 23 24 VDD VDD 36 35 34 33 32 31 30 29 28 27 26 25 Vdda Vssa PB7 PB6 PB5 PB4 PB3 PB2 PB1 PB0 PE7 PE6 680nF PG1 PG0 PC7 PC6 Vddio_2 Vssio_2 PC5 PC4 PC3 PC2 PC1 PE5 3 R5 20pF NRST OSCIN/PA1 OSCOUT/PA2 Vssio_1 Vss VCAP Vdd Vddio_1 PA3 PA4 PA5 PA6 2 NRST PA1 PA2 C3 20pF U1 STM8S105C6T6 2 X1 16MHz PD7 PD6 PD5 PD4 PD3 PD2 PD1 PD0 PE0 PE1 PE2 PE3 Doc ID 16361 Rev 3 R7 10K[N/A] 48 47 46 45 44 43 42 41 40 39 38 37 VDD <----Touch Sensing diameter 8mm EX_PC3 +3V3 U5V 1 JP1 VDD 2 3 C8 100nF C9 100nF C10 100nF STMicroelectronics Title: STM8S-Discovery MCU 15/18 Number:MB867 1 2 3 Rev: A.1(PCB.SCH) Date: 8/24/2009 4 Sheet 2 of 3 Electrical schematics TS1 TS_PAD Electrical schematics 16/18 Figure 14. STM8S-DISCOVERY ST-LINK (SWIM only) R15 VDD U2 STM32F103C8T6 48 47 46 45 44 43 42 41 40 39 38 37 +3V3 SWIM_IN SWIM_RST SWIM_RST_IN STM_JRST STM_JTDO STM_JTDI STM_JTCK SWIM_IN SWIM 100K X2 2 +3V3 8MHz +3V3 VDD_3 VSS_3 PB9 PB8 BOOT0 PB7 PB6 PB5 JNRST JTDO JTDI JTCK 1 C16 20pF 1 2 3 SWIM_PULLUP_CTL 4 5 OSC_IN OSC_OUT 6 STM_RST 7 8 C11 9 100nF+3V3 AIN_1 10 M25_CS 11 U2_TX 12 R16 100K R12 680 R8 SWIM_IN SWIM_RST_IN R9 +3V3 VDD_2 VSS_2 JTMS PA12 PA11 PA10 PA9 PA8 S2_MOSI S2_MISO S2_CK PB12 36 35 34 33 32 31 30 29 28 27 26 25 220 220 SWIM SWIM_RST R13 R14 47 47 ST_LINK_SWIM RESET# STM_JTMS USB_DP USB_DM U1_RX U1_TX ST_LINK_LED VDD CN7 1 2 3 4 T_JTMS T_JTCK Header 4 CN5 STM_JRST STM_JTDI STM_JTCK 8 6 4 7 5 STM_JTMS 3 STM_JTDO 1 SWIM_IN SWIM U2_RX U2_CK T_JTCK T_JTDO T_JTDI T_NRST T_JRST 13 14 15 16 17 18 19 20 21 22 23 24 Doc ID 16361 Rev 3 VBAT PC13 PC14 PC15 OSC_IN OSC_OUT /RST VSSA VDDA PA0 PA1 U2_TX U2_RX U2_CK S1_CK S1_MISO S1_MOSI PB0 PB1 PB2/BOOT1 PB10 PB11 VSS_1 VDD_1 C15 20pF SWIM +3V3 +3V3 JTAG MCU +3V3 R17 ST_LINK_LED 510 R18 1K5 1 2 3 4 0 0 22 USB_DM 22 USB_DP U5V C18 4.7uF Vin Vout R20 4K7 4K7 AIN_1 U4 LD1117-3V3 3 RED R19 LED +3V3 2 C19 4.7uF C12 104P C13 104P C17 104P C14 104P STMicroelectronics Title: STM8S-Discovery ST_LINK (SWIM only) USB Number:MB867 Rev: A.1(PCB.SCH) Date: 6/25/2009 Sh UM0817 USB-typeB connector R21 R22 1 VCC DD+ GND SHELL SHELL VDD U5V CN6 LD2 UM0817 6 Revision history Revision history Table 5. Document revision history Date Revision Changes 05-Oct-2009 1 Initial release. 22-Feb-2010 2 Section 2.4 modified. 28-Jul-2011 3 Section 4 added. Doc ID 16361 Rev 3 17/18 UM0817 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. 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