STM32L051 in STM32 Family
The STM32L051 sub-family, manufactured by STMicroelectronics, is a line of ultra-low-power microcontrollers built on the 32-bit ARM Cortex-M0+ core. These devices are optimized for energy efficiency in battery-operated applications, operating at frequencies up to 32 MHz. They bridge the gap between high-performance processing and extreme power conservation, featuring integrated power management and a wide range of serial peripherals designed to remain functional in low-power modes while maintaining a minimal silicon footprint.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | Peripherals | I/O Pins | Package | ADC/DAC | Flash | Stock |
|---|---|---|---|---|---|---|
| STM32L051K8T6 (STMicroelectronics) | Brown-out Detect/R.. | 27 | LQFP-32 | A/D 10x12b | 64KB | 2,404 |
| STM32L051R6T6 (STMicroelectronics) | Brown-out Detect/R.. | 51 | LQFP-64 | A/D 16x12b | 32KB | — |
| STM32L051T8Y6DTR (STMicroelectronics) Tape & Reel | Brown-out Detect/R.. | 29 | UFBGA-36 | A/D 10x12b | 64KB | — |
Variants within the STM32L051 sub-family primarily differ in memory density and package pinouts. Flash memory options typically scale from 16KB to 64KB, while RAM remains consistent at 8KB. Package options range from the compact 32-pin LQFP or QFN footprints up to 64-pin configurations, which provide more GPIOs and additional peripheral mapping options for complex system designs requiring more I/O interfaces.
