What this 8-bit MCU brings to the board
16 MHz — what it means for your loop timing
At 16 MHz, this MCU executes most instructions in one or two clock cycles. The 2 KB RAM supports typical control loops.

STMicroelectronics STM8S105S6T6CTR, 8-bit STM8 MCU, 16 MHz, 32 KB Flash, 2 KB RAM, 34 I/O, 44-LQFP, -40°C to 85°C, 2.95V to 5.5V.
| Parameter | Value |
|---|---|
| Series | STM8S |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 2.95V ~ 5.5V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 16MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 2K x 8 |
| Core size | 8-Bit |
| EEPROM size | 1K x 8 |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SPI, UART/USART |
| Number of i (O) | 34 |
| Core processor | STM8 |
| Case | 44-LQFP |
| Data converters | A/D 9x10b |
| Program memory size | 32KB (32K x 8) |
At 16 MHz, this MCU executes most instructions in one or two clock cycles. The 2 KB RAM supports typical control loops.
The core runs at 16 MHz, which is the maximum clock frequency for this STM8S device.