The STM8S105K4B6: For existing BOM lines, availability is limited to surplus and broker channels.
What this 8-bit MCU delivers
It runs at 16 MHz and provides 16 KB of Flash program memory, 2K x 8 of RAM, and 1K x 8 of EEPROM for non-volatile parameter storage. The 32-SDIP through-hole package (0.400" body width, 10.16 mm pitch) makes it suitable for hand-assembly, prototyping, or legacy boards where surface-mount reflow is impractical.
Peripherals and connectivity for control applications
On-chip peripherals include a 7-channel 10-bit ADC, brown-out detect and reset, PWM, and a watchdog timer. Communication interfaces cover I²C, SPI, UART/USART, LIN, and IrDA, giving it the flexibility to talk to sensors, actuators, displays, and serial buses typical in industrial control and automotive body electronics. With 25 I/O lines in the 32-pin package, it provides enough GPIO for moderate-complexity designs like motor control panels, lighting controllers, or HVAC zone modules.
The 16 MHz clock rate is typical for an 8-bit MCU in this class; it delivers roughly 16 MIPS at that speed, sufficient for real-time control loops, sensor polling, and communication protocol handling.