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| PartNumber | STM8S105K4U6A | STM8S105K4U6ATR |
| Description | 8-bit Microcontrollers - MCU 8-bit MCU Access 16 MHz 16kb Flash | 8-bit Microcontrollers - MCU Mainstream Access line 8-bit MCU with 16 Kbytes Flash, 16 MHz CPU, integrated EEPROM |
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Product Category | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| RoHS | Y | - |
| Mounting Style | SMD/SMT | - |
| Package / Case | UFQFPN-32 | - |
| Series | STM8S105K4 | STM8S105K4 |
| Core | STM8 | - |
| Data Bus Width | 8 bit | - |
| Maximum Clock Frequency | 16 MHz | - |
| Program Memory Size | 16 kB | - |
| Data RAM Size | 2 kB | - |
| ADC Resolution | 10 bit | - |
| Number of I/Os | 25 I/O | - |
| Operating Supply Voltage | 2.95 V to 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - |
| Maximum Operating Temperature | + 85 C | - |
| Product | MCU | - |
| Program Memory Type | Flash | - |
| Brand | STMicroelectronics | STMicroelectronics |
| Data RAM Type | RAM | - |
| Data ROM Size | 1 kB | - |
| Data ROM Type | EEPROM | - |
| Interface Type | I2C, SPI, UART | - |
| Moisture Sensitive | Yes | - |
| Number of ADC Channels | 7 Channel | - |
| Number of Timers/Counters | 3 x 16 bit, 1 x 8 bit | - |
| Processor Series | STM8S | - |
| Product Type | 8-bit Microcontrollers - MCU | 8-bit Microcontrollers - MCU |
| Factory Pack Quantity | 2940 | 3000 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 5.5 V | - |
| Supply Voltage Min | 2.95 V | - |
| Watchdog Timers | Watchdog Timer | - |
| Unit Weight | 0.003175 oz | - |