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The STM8S20xxx performance line 8-bit microcontrollers offer from 32 to 128 Kbytes Flash program memory. They are referred to as high-density devices in the STM8S microcontroller family reference manual.
All STM8S20xxx devices provide the following benefits: reduced system cost, performance robustness, short development cycles, and product longevity.
The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k write/erase cycles and a high system integration level with internal clock oscillators, watchdog, and brown-out reset.
Device performance is ensured by 20 MIPS at 24 MHz CPU clock frequency and enhanced characteristics which include robust I/O, independent watchdogs (with a separate clock source), and a clock security system.
Short development cycles are guaranteed due to application scalability across a common family product architecture with compatible pinout, memory map and modular peripherals. Full documentation is offered with a wide choice of development tools.
Product longevity is ensured in the STM8S family thanks to their advanced core which is made in a state-of-the art technology for applications with 2.95 V to 5.5 V operating supply.Key Features
- Core
- Max fCPU: up to 24 MHz, 0 wait states @ fCPU≤ 16 MHz
- Advanced STM8 core with Harvard architecture and 3-stage pipeline
- Extended instruction set
- Max 20 MIPS @ 24 MHz
- Memories
- Program: up to 128 Kbytes Flash; data retention 20 years at 55 °C after 10 kcycles
- Data: up to 2 Kbytes true data EEPROM; endurance 300 kcycles
- RAM: up to 6 Kbytes
- Clock, reset and supply management
- 2.95 to 5.5 V operating voltage
- Low power crystal resonator oscillator
- External clock input
- Internal, user-trimmable 16 MHz RC
- Internal low power 128 kHz RC
- Clock security system with clock monitor
- Wait, active-halt, & halt low power modes
- Peripheral clocks switched off individually
- Permanently active, low consumption power-on and power-down reset
- Interrupt management
- Nested interrupt controller with 32 interrupts
- Up to 37 external interrupts on 6 vectors
- Timers
- 2x 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
- Auto wakeup timer
- Window watchdog, independent watchdog
- Communications interfaces
- High speed 1 Mbit/s active beCAN 2.0B
- UART with clock output for synchronous operation - LIN master mode
- UART with LIN 2.1 compliant, master/slave modes and automatic resynchronization
- SPI interface up to 10 Mbit/s
- I2C interface up to 400 Kbit/s
- 10-bit ADC with up to 16 channels
- I/Os
- Up to 68 I/Os on an 80-pin package including 18 high sink outputs
- Highly robust I/O design, immune against current injection
- Development support
- Single wire interface module (SWIM) and debug module (DM)
- 96-bit unique ID key for each device
- Core
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Sample & Buy
| Part Number | Package | Packing Type | Temperature (°C) | Marketing Status | Budgetary Price (US$)* | Quantity | ECCN (US) | Country of Origin | More info | Order from Distributors | Order from ST | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| STM8S207R8T3TR | LQFP 64 10x10x1.4 | Tape And Reel | -40 | 125 |
Active
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1.3748 | 10000 | EAR99 | CHINA | Check Availability | Buy now | |
| STM8S207R8T6TR | LQFP 64 10x10x1.4 | Tape And Reel | -40 | 85 |
Active
|
1.1955 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now | |
| STM8S207R8T6 | LQFP 64 10x10x1.4 | Tray | -40 | 85 |
Active
|
1.1955 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now | |
| STM8S207R8T3 | LQFP 64 10x10x1.4 | Tray | -40 | 125 |
Active
|
1.3748 | 10000 | EAR99 | CHINA | Check Availability | Buy now | |
| STM8S207R8T6C | LQFP 64 14x14x1.4 | Tray | -40 | 85 |
Active
|
1.2744 | 10000 | EAR99 | MALAYSIA | Check Availability | Buy now | |
(*) 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
Featured Videos
We asked Christophe the following questions: - How is ST engaged in the 8-bit MCU market ? - What benefits does the STM8 bring? - What applications are suitable for STM8 (no change) - What kind of ecosystem does STM8 have?
8-bit microcontrollers for industrial and mass-market applications
Here is an opportunity to get to learn the basics of our STM8S value line !
Development Tools
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Picture Part number Manufacturer Description AD/Stice_Connect ST Connection Adapter to use with STICE-SYS00x emulation systems AS/Stice_Connect ST Adapter Socket for application board - to use with STICE-SYS00x emulation systems CF/Stice_Connect ST Connexion flex to use with STICE-SYS00x emulation systems CYCLONE P&E Microcomputer Systems Automated, Stand-Alone Production Programmer, Debug & Test. CYCLONE FX P&E Microcomputer Systems Automated, Stand-Alone Production Programmer, Debug & Test. 
FlashPro Elprotronic Flash programmer for STM8 and ARM based MCUs. 
GangPro Elprotronic Gang programmer for STM8 and ARM based MCUs. 
ST-LINK ST In-circuit debugger and programmer for STM8 and STM32 MCUs; with IAR EWARM and Keil RVMDK and ST toolset 
ST-LINK/V2 ST ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 STICE ST Full-featured emulator offers flexible, modular debugging and programming solution 
STLINK-V3SET ST STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8 Part NumberConnection Adapter to use with STICE-SYS00x emulation systems
Adapter Socket for application board - to use with STICE-SYS00x emulation systems
Connexion flex to use with STICE-SYS00x emulation systems
Automated, Stand-Alone Production Programmer, Debug & Test.
Automated, Stand-Alone Production Programmer, Debug & Test.
Flash programmer for STM8 and ARM based MCUs.
Gang programmer for STM8 and ARM based MCUs.
In-circuit debugger and programmer for STM8 and STM32 MCUs; with IAR EWARM and Keil RVMDK and ST toolset
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32
Full-featured emulator offers flexible, modular debugging and programming solution
STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8
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Picture Part number Manufacturer Description CXSTM8 Cosmic Software C Compiler and associated tools for the STM8 family FLASHER-STM8 ST STM8 Flash loader demonstrator (UM0462) IAR Embedded Workbench for STM8 IAR Systems Integrated Development Environment. RIDE-STM8 Raisonance Raisonance branded integrated development environment for STM8 MCUs STM-STUDIO-STM8 ST STM Studio run-time variables monitoring and visualization tool for STM8 microcontrollers 
STM8CubeMX ST STM8Cube configuration and report tool STVD-STM8 ST ST Visual develop IDE for developing ST7 and STM8 applications STVP-LIB-STM8 ST STVP programming toolkit: C++ source files for creating PC programming interface STVP-STM8 ST ST Visual Programmer STM8 winIDEA-STM8 iSYSTEM iSYSTEM's complete software development and test solution for the STM8 MCUs Part NumberC Compiler and associated tools for the STM8 family
STM8 Flash loader demonstrator (UM0462)
Integrated Development Environment.
Raisonance branded integrated development environment for STM8 MCUs
STM Studio run-time variables monitoring and visualization tool for STM8 microcontrollers
STM8Cube configuration and report tool
ST Visual develop IDE for developing ST7 and STM8 applications
STVP programming toolkit: C++ source files for creating PC programming interface
ST Visual Programmer STM8
iSYSTEM's complete software development and test solution for the STM8 MCUs
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Embedded Software
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Picture Part number Manufacturer Description STM8-SafeCLASSB ST Functional safety package to achieve IEC 60730 Class B certification with the STM8 STM8S-TOUCH-LIB -- STM8S touch-sensing library STSW-STM8004 ST STM8 optimized I2C examples (AN3281) STSW-STM8005 ST STM8S20xxx LCD software driver (AN2687) STSW-STM8006 ST Example of implementation of user bootloader (AN2659) STSW-STM8020 ST STM8S and STM8A BLDC and ACIM motor control firmware library V1.0 (UM0708) STSW-STM8025 ST STM8S DALI library example (AN3298) STSW-STM8026 ST STM8S optimized examples package STSW-STM8027 ST STM8S Smartcard application note firmware (AN2646) STSW-STM8045 ST Audio software codec for the STM8S STSW-STM8048 ST Precision improvement techniques for the A/D converter of the STM8 microcontroller (AN2719) STSW-STM8049 ST Basic in-application programming example using the STM8 I2C and SPI peripherals (AN2737) STSW-STM8050 ST Real-time keeping on STM8S devices and usage of auto-wakeup unit (AWU) and beeper (AN2780) STSW-STM8051 ST UART emulation software in STM8S and STM8A microcontrollers (AN2781) STSW-STM8052 ST STM8S high speed internal oscillator calibration (AN2822) STSW-STM8053 ST STM8S family power management (AN2857) STSW-STM8062 ST STM8 in-application programming (IAP) using a customized bootloader (AN2659) STSW-STM8064 ST Setup screensaver STM8 1024x768 STSW-STM8065 ST Setup screensaver STM8 1280x1024 STSW-STM8068 ST Erase/write routines for STM8 ROM bootloader (UM0560) STSW-STM8069 ST STM8S/A Standard peripheral library STSW-STM8077 ST STM8AF and STM8S HSI oscillator calibration using LIN automatic resynchronization (AN3258) Part NumberFunctional safety package to achieve IEC 60730 Class B certification with the STM8
STM8S touch-sensing library
STM8 optimized I2C examples (AN3281)
STM8S20xxx LCD software driver (AN2687)
Example of implementation of user bootloader (AN2659)
STM8S and STM8A BLDC and ACIM motor control firmware library V1.0 (UM0708)
STM8S DALI library example (AN3298)
STM8S optimized examples package
STM8S Smartcard application note firmware (AN2646)
Audio software codec for the STM8S
Precision improvement techniques for the A/D converter of the STM8 microcontroller (AN2719)
Basic in-application programming example using the STM8 I2C and SPI peripherals (AN2737)
Real-time keeping on STM8S devices and usage of auto-wakeup unit (AWU) and beeper (AN2780)
UART emulation software in STM8S and STM8A microcontrollers (AN2781)
STM8S high speed internal oscillator calibration (AN2822)
STM8S family power management (AN2857)
STM8 in-application programming (IAP) using a customized bootloader (AN2659)
Setup screensaver STM8 1024x768
Setup screensaver STM8 1280x1024
Erase/write routines for STM8 ROM bootloader (UM0560)
STM8S/A Standard peripheral library
STM8AF and STM8S HSI oscillator calibration using LIN automatic resynchronization (AN3258)
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Evaluation Tools
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Picture Part number Manufacturer Description 
NUCLEO-8S208RB ST STM8 Nucleo-64 development board with STM8S208RB MCU, supports Arduino and ST morpho connectivity 
STM8/128-EVAL ST Evaluation board with STM8S208MB MCU 
STM8/128-MCKIT ST Motor control starter kit for STM8S (128KB flash) microcontrollers 
STM8S-DISCOVERY ST Discovery kit with STM8S105C6 MCU Part NumberSTM8 Nucleo-64 development board with STM8S208RB MCU, supports Arduino and ST morpho connectivity
Evaluation board with STM8S208MB MCU
Motor control starter kit for STM8S (128KB flash) microcontrollers
Discovery kit with STM8S105C6 MCU
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Support and Applications
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Picture Part number Manufacturer Description ST Trainings MASTERS STM32, STM8 and ST Ecosystem trainings Part NumberSTM32, STM8 and ST Ecosystem trainings
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| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM8S207R8T3 |
Active
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LQFP 64 10x10x1.4 | Industrial | Ecopack2 | |
| STM8S207R8T3TR |
Active
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LQFP 64 10x10x1.4 | Industrial | Ecopack2 | |
| STM8S207R8T6 |
Active
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LQFP 64 10x10x1.4 | Industrial | Ecopack2 | |
| STM8S207R8T6C |
Active
|
LQFP 64 14x14x1.4 | Industrial | Ecopack2 | |
| STM8S207R8T6TR |
Active
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LQFP 64 10x10x1.4 | Industrial | Ecopack2 |
(**) The Material Declaration forms available on st.com 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.