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| PartNumber | STM8S103F3U3TR | STM8S103F3U6ATR | STM8S103F3U6 |
| 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 8-BIT MCU | MCU 8-bit STM8S STM8 CISC 8KB Flash 3.3V/5V 20-Pin UFQFPN EP (Alt: STM8S103F3U6) |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | QFN-20 | QFN-20 | - |
| Series | STM8S103F3 | STM8S103F3 | STM8S |
| Core | STM8 | STM8 | - |
| Data Bus Width | 8 bit | 8 bit | - |
| Maximum Clock Frequency | 16 MHz | 16 MHz | - |
| Program Memory Size | 8 kB | 8 kB | 8KB (8K x 8) |
| Data RAM Size | 1 kB | 1 kB | - |
| ADC Resolution | 10 bit | - | - |
| Number of I/Os | 16 I/O | - | - |
| Operating Supply Voltage | 2.95 V to 5.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 85 C | - |
| Packaging | Reel | Reel | Tape & Reel (TR) |
| Height | 0.55 mm | - | - |
| Length | 3 mm | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | Flash | FLASH |
| Width | 3 mm | - | - |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Data RAM Type | RAM | RAM | - |
| Data ROM Size | 640 B | 640 B | - |
| Data ROM Type | EEPROM | EEPROM | - |
| Interface Type | I2C, SPI, UART | - | - |
| Number of ADC Channels | 5 Channel | - | - |
| Number of Timers/Counters | 7 Timer | - | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU | - |
| Factory Pack Quantity | 3000 | 3000 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Voltage Min | 2.95 V | - | - |
| Watchdog Timers | Watchdog Timer | - | - |
| Unit Weight | 0.004339 oz | 0.004339 oz | - |
| Processor Series | - | STM8S | - |
| Package Case | - | - | 20-UFQFN |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 20-UFQFPN (3x3) |
| Number of I O | - | - | 16 |
| Speed | - | - | 16MHz |
| EEPROM Size | - | - | 640 x 8 |
| Core Processor | - | - | |
| RAM Size | - | - | 1K x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | - | - | I2C, IrDA, LIN, SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 2.95 V ~ 5.5 V |
| Core Size | - | - | 8-Bit |
| Data Converters | - | - | A/D 5x10b |
| Oscillator Type | - | - | Internal |