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| PartNumber | STM8S105K4U6A | STM8S105K4U6ATR | STM8S105K4U6 |
| 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 | MCU 8-bit STM8S STM8 CISC 16KB Flash 3.3V/5V 32-Pin UFQFPN EP Tray |
| 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 | - | - |