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| PartNumber | STM32L051K8U6 | STM32L051K8U3 | STM32L051K8U6D |
| Description | ARM Microcontrollers - MCU 16/32-BITS MICROS | ARM Microcontrollers - MCU 16/32-BITS MICROS | |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | Embedded - Microcontrollers |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | UFQFPN-32 | - | - |
| Series | STM32L051K8 | STM32L051K8 | STM32 L0 |
| Core | ARM Cortex M0+ | - | - |
| Data Bus Width | 32 bit | - | - |
| Maximum Clock Frequency | 32 MHz | - | - |
| Program Memory Size | 64 kB | - | 64KB (64K x 8) |
| Data RAM Size | 8 kB | - | - |
| ADC Resolution | 12 bit | - | - |
| Number of I/Os | 27 I/O | - | - |
| Operating Supply Voltage | 1.8 V to 3.6 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Product | MCU | - | - |
| Program Memory Type | Flash | - | FLASH |
| Brand | STMicroelectronics | STMicroelectronics | - |
| Data RAM Type | SRAM | - | - |
| Data ROM Size | 2 kB | - | - |
| Data ROM Type | EEPROM | - | - |
| Interface Type | I2C, SPI/I2S, USART | - | - |
| Analog Supply Voltage | 1.65 V to 3.6 V | - | - |
| I/O Voltage | 1.65 V to 3.6 V | - | - |
| Moisture Sensitive | Yes | Yes | - |
| Number of ADC Channels | 10 Channel | - | - |
| Number of Timers/Counters | 5 x 16 bit | - | - |
| Processor Series | STM32L0 | - | ARM Cortex-M |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | - |
| Factory Pack Quantity | 2940 | 2940 | - |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | - |
| Supply Voltage Max | 3.6 V | - | - |
| Supply Voltage Min | 1.8 V | - | - |
| Watchdog Timers | Watchdog Timer, Windowed | - | - |
| Unit Weight | 0.236794 oz | 0.091712 oz | - |
| Packaging | - | - | Tape & Reel (TR) |
| Tradename | - | - | STM32 |
| Package Case | - | - | 32-UFQFN Exposed Pad |
| Operating Temperature | - | - | -40°C ~ 85°C (TA) |
| Supplier Device Package | - | - | 32-UFQFPN (5x5) |
| Number of I O | - | - | 27 |
| Speed | - | - | 32MHz |
| EEPROM Size | - | - | 2K x 8 |
| Core Processor | - | - | ARMR CortexR-M0+ |
| RAM Size | - | - | 8K x 8 |
| Peripherals | - | - | Brown-out Detect/Reset, DMA, POR, PWM, WDT |
| Connectivity | - | - | I2C, IrDA, SPI, UART/USART |
| Voltage Supply Vcc Vdd | - | - | 1.65 V ~ 3.6 V |
| Core Size | - | - | 32-Bit |
| Data Converters | - | - | A/D 10x12b |
| Oscillator Type | - | - | Internal |