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| PartNumber | STM32F051K4U7TR | STM32F051K4U7 | STM32F051K4U7A |
| Description | ARM Microcontrollers - MCU ARM Cortex-M0 MCU 16Kb Flash 48MHz | ARM Microcontrollers - MCU ARM Cortex-M0 MCU 16Kb Flash 48MHz | |
| Manufacturer | STMicroelectronics | STMicroelectronics | - |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | UFQFPN-32 | UFQFPN-32 | - |
| Series | STM32F051K4 | STM32F051K4 | - |
| Core | ARM Cortex M0 | ARM Cortex M0 | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 48 MHz | 48 MHz | - |
| Program Memory Size | 16 kB | 16 kB | - |
| Data RAM Size | 8 kB | 8 kB | - |
| ADC Resolution | 12 bit | 12 bit | - |
| Number of I/Os | 27 I/O | 27 I/O | - |
| Operating Supply Voltage | 2 V to 3.6 V | 2 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 105 C | + 105 C | - |
| Packaging | Reel | - | - |
| Program Memory Type | Flash | Flash | - |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Data RAM Type | SRAM | SRAM | - |
| Interface Type | CEC, I2C, SPI, USART | CEC, I2C, SPI, USART | - |
| Number of ADC Channels | 1 | 1 | - |
| Number of Timers/Counters | 5 Timer | 5 Timer | - |
| Processor Series | ARM Cortex M | ARM Cortex M | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Factory Pack Quantity | 3000 | 2940 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Tradename | STM32 | STM32 | - |
| Moisture Sensitive | - | Yes | - |
| Unit Weight | - | 0.035979 oz | - |