| Produsen | STMicroelectronics | 
                                                                            
                                            | Kategori Produk | Embedded - Microcontrollers | 
                                                                            
                                            | Kecepatan | 16MHz | 
                                                                            
                                            | Seri | STM8S | 
                                                                            
                                            | Ukuran RAM | 1K x 8 | 
                                                                            
                                            | Ukuran inti | 8-Bit | 
                                                                            
                                            | Kemasan | Digi-Reel® | 
                                                                            
                                            | Ukuran EEPROM | 640 x 8 | 
                                                                            
                                            | Status bagian | Active | 
                                                                            
                                            | Peripheral | Brown-out Detect/Reset, POR, PWM, WDT | 
                                                                            
                                            | Konektivitas | I²C, IrDA, LINbus, SPI, UART/USART | 
                                                                            
                                            | Jenis pemasangan | Surface Mount | 
                                                                            
                                            | Jumlah I/O | 16 | 
                                                                            
                                            | Prosesor inti | STM8 | 
                                                                            
                                            | Paket/kasus | 20-SOIC (0.295", 7.50mm Width) | 
                                                                            
                                            | Pengubah data | A/D 5x10b | 
                                                                            
                                            | Jenis osilator | Internal | 
                                                                            
                                            | Nomor bagian dasar | STM8S903 | 
                                                                            
                                            | Ukuran memori program | 8KB (8K x 8) | 
                                                                            
                                            | Jenis memori program | FLASH | 
                                                                            
                                            | Suhu operasi | -40°C ~ 85°C (TA) | 
                                                                            
                                            | Tegangan-Supply (VCC/VDD) | 2.95V ~ 5.5V |