Spesifikasi
| Nomer Part | STM8S903K3U3 |
| Produsen | STMicroelectronics |
| Katrangan | IC MCU 8BIT 8KB FLASH 32UFQFPN |
| Tegangan - Pasokan (Vcc/Vdd) | 2,95 V ~ 5,5 V |
| Kacepetan | 16 MHz |
| Seri | STM8S |
| Ukuran RAM | 1k x8 |
| Tipe Memori Program | FLASH |
| Ukuran Memori Program | 8 KB (8K x 8) |
| Peripheral | Brown-out Deteksi/Reset, POR, PWM, WDT |
| Kemasan | nampan |
| Tipe Osilator | Internal |
| Suhu operasi | -40°C ~ 125°C (TA) |
| Jumlah I/O | 28 |
| Ukuran EEPROM | 640 x8 |
| Konverter Data | A/D 7x10b |
| Ukuran inti | 8-Bit |
| Prosesor inti | STM 8 |
| Konektivitas | I²C, IrDA, LIN, SPI, UART/USART |
