| PartNumber | STM8S903K3T6C | STM8S903K3T6CTR |
| Description | 8-bit Microcontrollers - MCU Performance LN 8-Bit 24 MHz STM8S MCU | 8-bit Microcontrollers - MCU 8BIT Ultralow MCU 8KB Flash 1KB RAM |
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT |
| Package / Case | LQFP-32 | LQFP-32 |
| Series | STM8S903K3 | STM8S903K3 |
| Core | STM8 | STM8 |
| Data Bus Width | 8 bit | 8 bit |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Program Memory Size | 8 kB | 8 kB |
| Data RAM Size | 1 kB | 1 kB |
| ADC Resolution | 10 bit | 10 bit |
| Number of I/Os | 28 I/O | 28 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 |
| Maximum Operating Temperature | + 85 C | + 85 C |
| Packaging | Tray | Reel |
| Height | 1.4 mm | - |
| Length | 7 mm | - |
| Program Memory Type | Flash | Flash |
| Width | 7 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 | I2C, SPI, UART |
| Moisture Sensitive | Yes | Yes |
| Number of ADC Channels | 7 | 7 Channel |
| Number of Timers/Counters | 7 Timer | 2 x 16 bit, 1 x 8 bit |
| Processor Series | STM8S90x | STM8S |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 1500 | 2400 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | 5.5 V |
| Supply Voltage Min | 2.95 V | 2.95 V |
| Unit Weight | 0.027302 oz | 0.006349 oz |
| Product | - | MCU |
| Watchdog Timers | - | Watchdog Timer |