STM8S103F2M6
STM8S103F2M6 - 8-Bit 16MHz 4KB MCU | STMicroelectronics
The STMicroelectronics STM8S103F2M6 is an 8-bit STM8S access-line microcontroller operating up to 16 MHz, with 4 KB of Flash memory and 1 KB of RAM in a 20-pin SOIC package. The verified distributor listing identifies a 2.95 V to 5.5 V supply range, 16 I/O ports, integrated data EEPROM, a 10-bit ADC, three timers, UART, SPI, and I2C. It is intended for compact embedded-control designs that need a capable peripheral set without the complexity of a 32-bit MCU.
An 8-bit microcontroller is a compact embedded-processing device optimized for control logic, sensing, communication, and actuator management. Within the STM8S family hierarchy, this device combines an 8-bit core, Flash program memory, RAM, and on-chip peripherals in one package. The STM8S103F2M6 is suitable for low-cost, low-power industrial, consumer, appliance, instrumentation, and embedded control systems where deterministic I/O and peripheral integration are more important than high arithmetic throughput.
The headline features are a 16 MHz maximum CPU frequency, 4 KB Flash, 1 KB RAM, 16 I/O ports, and integrated EEPROM. Its 10-bit ADC enables analog measurement from basic sensors, while the three timers support timing, PWM, and periodic control functions. UART, SPI, and I2C interfaces provide flexible connectivity to sensors, displays, transceivers, memories, and other microcontrollers. The 20-pin SOIC package is suitable for conventional surface-mount assembly and hand-soldered prototypes.
The STMicroelectronics datasheet describes the STM8S103F2 family as an access-line MCU family with up to 8 KB Flash across family variants. For the specific STM8S103F2M6 ordering code, the verified distributor results specify 4 KB Flash and a 16 MHz CPU. This distinction matters because related family members may have different memory capacities, pin counts, or package options. Firmware and PCB decisions should therefore use the exact ordering code rather than relying only on the STM8S103F2 family name.
Typical applications include small motor or relay controllers, temperature and light monitoring, keypad interfaces, LED indicators, low-cost measurement instruments, communication modules, and compact household or industrial automation nodes. The ADC and communication peripherals allow a single device to acquire sensor data and connect it to a host system. For designs requiring higher processing performance or larger memory, a 32-bit MCU may be preferable, while this device is optimized for economical embedded-control tasks.
When designing, verify the exact pin assignments, alternate-function selection, clock configuration, ADC input availability, and peripheral instance mapping from the STMicroelectronics datasheet. Place decoupling capacitors close to the supply pins and keep high-current or switching nodes away from sensitive analog inputs. Program the device with a compatible STM8 toolchain and validate startup, reset, clock, and watchdog behavior on the final PCB.
This page synthesizes the verified manufacturer and distributor information, package details, application guidance, and engineering considerations for engineers evaluating the STM8S103F2M6. It emphasizes exact-ordering-code verification rather than assuming every STM8S103F2 family variant has identical resources.
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