| PartNumber | STM8S103F3U3TR | STM8S103F3U6TR | STM8S103F3U6ATR |
| Description | 8-bit Microcontrollers - MCU Mainstream Access line 8-bit MCU with 8 Kbytes Flash, 16 MHz CPU, integrated EEPROM | 8-bit Microcontrollers - MCU Access line, 16 MHz STM8S 8-bit 8 Kbyte | 8-bit Microcontrollers - MCU Access Line 16 MHz 8-BIT MCU |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | QFN-20 | QFN-20 | QFN-20 |
| Series | STM8S103F3 | STM8S103F3 | STM8S103F3 |
| Core | STM8 | STM8 | STM8 |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz |
| Program Memory Size | 8 kB | 8 kB | 8 kB |
| Data RAM Size | 1 kB | 1 kB | 1 kB |
| ADC Resolution | 10 bit | 10 bit | - |
| Number of I/Os | 16 I/O | 16 I/O | - |
| Operating Supply Voltage | 2.95 V to 5.5 V | 2.95 V to 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 125 C | + 85 C | + 85 C |
| Packaging | Reel | Reel | Reel |
| Height | 0.55 mm | - | - |
| Length | 3 mm | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | Flash | Flash |
| Width | 3 mm | - | - |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Data RAM Type | RAM | RAM | RAM |
| Data ROM Size | 640 B | 640 B | 640 B |
| Data ROM Type | EEPROM | EEPROM | EEPROM |
| Interface Type | I2C, SPI, UART | I2C, SPI, UART | - |
| Number of ADC Channels | 5 Channel | 5 | - |
| Number of Timers/Counters | 7 Timer | 7 Timer | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 3000 | 3000 | 3000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 2.95 V | 2.95 V | - |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | 0.004339 oz | 0.004339 oz | 0.004339 oz |
| Processor Series | - | STM8S | STM8S |