The STM8S003F3P6 is a “Value Line” 8-bit microcontroller that offers a perfect balance of performance and affordability. This minimum development board breaks out all pins of the TSSOP-20 package to standard 2.54mm headers, making it breadboard-friendly. It is widely used for simple control tasks, sensor interfacing, and as a “co-processor” in larger systems. Unlike Arduino, it uses the SWIM (Single Wire Interface Module) protocol for high-speed programming and real-time debugging.
Key Features
Powerful 8-Bit Core: 16MHz Harvard architecture with a 3-stage pipeline—faster and more efficient than traditional 8051 cores.
Compact Footprint: Smaller than an Arduino Nano, making it ideal for tight enclosures.
On-Board Voltage Regulator: Includes an AMS1117-3.3V regulator; can be powered via the USB port or external pins 4.5V to 15V.
Flexible I/O: All pins are clearly labeled, including UART, SPI, I2C, and 5-channel 10-bit ADC.
Developer Essentials: Integrated Reset button, Power LED, and a User LED (connected to pin PB5).
Technical Specifications
Feature
Specification
Microcontroller
STM8S003F3P6 (TSSOP-20)
Clock Speed
16 MHz (Internal RC or External Crystal)
Flash Memory
8 KB
RAM
1 KB
EEPROM
128 Bytes (True Data EEPROM)
Operating Voltage
3.3V (Regulated on-board)
Input Voltage
5V via USB or 4.5V-15V via Vin
Programming
SWIM Interface (Requires ST-Link V2)
Dimensions
Approx. 36.5mm x 21.6mm
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