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The STM8S003F3/K3 value line 8-bit microcontrollers offer 8 Kbytes of Flash program memory, plus integrated true data EEPROM. They are referred to as low-density devices in the STM8S microcontroller family reference manual (RM0016).
The STM8S003F3/K3 value line devices provide the following benefits: performance, robustness and reduced system cost.
Device performance and robustness are ensured by true data EEPROM supporting up to 100000 write/erase cycles, advanced core and peripherals made in a state-of-the-art technology at 16 MHz clock frequency, robust I/Os, independent watchdogs with separate clock source, and a clock security system.
The system cost is reduced thanks to a high system integration level with internal clock oscillators, watchdog, and brown-out reset.
Full documentation is offered as well as a wide choice of development tools.Key Features
- Core
- 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline
- Extended instruction set
- Memories
- Program memory: 8 Kbyte Flash memory; data retention 20 years at 55 °C after 100 cycles
- RAM: 1 Kbyte
- Data memory: 128 bytes true data EEPROM; endurance up to 100 k write/erase cycles
- Clock, reset and supply management
- 2.95 V to 5.5 V operating voltage
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Flexible clock control, 4 master clock sources
- 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
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Power management
- Low-power modes (wait, active-halt, halt)
- Switch-off peripheral clocks individually
- Permanently active, low-consumption power-on and power-down reset
- Interrupt management
- Nested interrupt controller with 32 interrupts
- Up to 27 external interrupts on 6 vectors
- Timers
- Advanced control timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization
- 16-bit general purpose timer, with 3 CAPCOM channels (IC, OC or PWM)
- 8-bit basic timer with 8-bit prescaler
- Auto wakeup timer
- Window and independent watchdog timers
- Communications interfaces
- UART with clock output for synchronous operation, SmartCard, IrDA, LIN master mode
- SPI interface up to 8 Mbit/s
- I2C interface up to 400 Kbit/s
- Analog to digital converter (ADC)
- 10-bit ADC, ± 1 LSB ADC with up to 5 multiplexed channels, scan mode and analog watchdog
- I/Os
- Up to 28 I/Os on a 32-pin package including 21 high-sink outputs
- Highly robust I/O design, immune against current injection
- Development support
- Embedded single-wire interface module (SWIM) for fast on-chip programming and non-intrusive debugging
- Core
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 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. Lauterbach PowerDebug for STM8 Lauterbach Debug Solution for STM8 series. 
ST-LINK/V2 ST ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 
STLINK-V3SET ST STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8 Part NumberAutomated, 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.
Debug Solution for STM8 series.
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32
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 C-STAT IAR Systems Static analysis tool; add-on product to IAR Embedded Workbench IAR Embedded Workbench for STM8 IAR Systems Integrated Development Environment. IAR Embedded Workbench for STM8 - Functional Safety IAR Systems Integrated Development Environment. IAR Visual State IAR Systems State-machine modelling tool 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)
Static analysis tool; add-on product to IAR Embedded Workbench
Integrated Development Environment.
Integrated Development Environment.
State-machine modelling tool
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
Evaluation Tools
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Picture Part number Manufacturer Description 
NUCLEO-8S207K8 ST STM8 Nucleo-32 development board with STM8S207K8 MCU, supports Arduino Nano connectivity 
NUCLEO-8S208RB ST STM8 Nucleo-64 development board with STM8S208RB MCU, supports Arduino Uno and ST morpho connectivity 
STM8-SO8-DISCO ST Discovery kit with STM8L001J3,STM8L050J3,STM8S001J3 MCUs 
STM8/128-EVAL ST Evaluation board with STM8S208MB MCU 
STM8SVLDISCOVERY ST Discovery kit with STM8S003K3 MCU Part NumberSTM8 Nucleo-32 development board with STM8S207K8 MCU, supports Arduino Nano connectivity
STM8 Nucleo-64 development board with STM8S208RB MCU, supports Arduino Uno and ST morpho connectivity
Discovery kit with STM8L001J3,STM8L050J3,STM8S001J3 MCUs
Evaluation board with STM8S208MB MCU
Discovery kit with STM8S003K3 MCU
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Support and Applications
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM8S003F3P6 |
Active
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TSSOP 20 | Industrial | Ecopack2 |
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| STM8S003F3P6TR |
Active
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TSSOP 20 | Industrial | Ecopack2 |
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| STM8S003F3U6TR |
Active
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UFQFPN 20 3x3x0.6 | 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.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| STM8S003F3P6 | 12 distributors | Get sample Buy now |
Active
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EAR99 | NEC | Tube | TSSOP 20 | -40 | 85 | CHINA | 0.2285 / 10k | |
| STM8S003F3P6TR | 12 distributors | Buy now |
Active
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EAR99 | NEC | Tape And Reel | TSSOP 20 | -40 | 85 | CHINA | 0.2285 / 10k | |
| STM8S003F3U6TR | 10 distributors | Buy now |
Active
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EAR99 | NEC | Tape And Reel | UFQFPN 20 3x3x0.6 | -40 | 85 | PHILIPPINES | 0.2285 / 10k | |
(*) 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