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| PartNumber | STM32L051K6U6 | STM32L051K6T6 | STM32L051K6T6TR |
| Description | ARM Microcontrollers - MCU 16/32-BITS MICROS | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 32 Kbytes Flash, 32 MHz CPU | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 32 Kbytes Flash, 32 MHz CPU |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | UFQFPN-32 | LQFP-32 | - |
| Series | STM32L051K6 | STM32L051K6 | STM32L051K6 |
| Core | ARM Cortex M0+ | ARM Cortex M0+ | - |
| Data Bus Width | 32 bit | 32 bit | - |
| Maximum Clock Frequency | 32 MHz | 32 MHz | - |
| Program Memory Size | 32 kB | 32 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 | 1.8 V to 3.6 V | 1.8 V to 3.6 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Product | MCU | MCU | - |
| Program Memory Type | Flash | Flash | - |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Data RAM Type | SRAM | SRAM | - |
| Data ROM Size | 2 kB | 2 kB | - |
| Data ROM Type | EEPROM | EEPROM | - |
| Interface Type | I2C, SPI/I2S, USART | I2C, SPI/I2S, USART | - |
| Analog Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | - |
| I/O Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 10 Channel | 10 Channel | - |
| Number of Timers/Counters | 5 x 16 bit | 5 x 16 bit | - |
| Processor Series | STM32L0 | STM32L0 | - |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 2940 | 1500 | 2400 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | 3.6 V | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Watchdog Timers | Watchdog Timer, Windowed | Watchdog Timer, Windowed | - |
| Packaging | - | Tray | Reel |
| Unit Weight | - | 0.091712 oz | - |