Spesifikasi
| Nomor Bagian | STM8S903F3M3 |
| Pabrikan | STMikroelektronik |
| Keterangan | IC MCU 8BIT 8KB FLASH 20SO |
| Tegangan – Pasokan (Vcc/Vdd) | 2,95 V ~ 5,5 V |
| Kecepatan | 16MHz |
| Seri | STM8S |
| Ukuran RAM | 1Kx8 |
| Jenis Memori Program | KILATAN |
| Ukuran Memori Program | 8KB (8K x 8) |
| Periferal | Deteksi/Reset Brown-out, POR, PWM, WDT |
| Kemasan | Tabung |
| Tipe Osilator | Intern |
| Suhu Operasional | -40°C ~ 125°C (TA) |
| Jumlah I/O | 16 |
| Ukuran EEPROM | 640x8 |
| Pengonversi Data | A/D 5x10b |
| Ukuran Inti | 8-Bit |
| Prosesor Inti | STM8 |
| Konektivitas | BISA, I²C, IrDA, LIN, SPI, UART/USART |
