STM32L151 in STM32 Family
The STM32L151 sub-family from STMicroelectronics is a series of ultra-low-power microcontrollers built on the ARM Cortex-M3 core. Designed for energy-efficient applications, these devices bridge the gap between 8-bit/16-bit efficiency and 32-bit performance. They leverage ST's proprietary ultra-low-leakage process technology and multiple power management modes to maximize battery life. This family is widely utilized in handheld industrial devices, medical monitors, and environmental sensors where minimizing current consumption in sleep and standby modes is the primary design constraint.
Variants in This Sub-Family
Comparing specs that differ across variants.
| Part Number | RAM | EEPROM Size | I/O Pins | Package | ADC/DAC | Flash | Stock |
|---|---|---|---|---|---|---|---|
| STM32L151RBT6 (STMicroelectronics) | 32K | 4K | 51 | LQFP-64 | A/D 20x12b; D/A 2x.. | 128KB | 742 |
| STM32L151C8T6A (STMicroelectronics) | 32K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 64KB | 6,742 |
| STM32L151RET6 (STMicroelectronics) | 80K | 16K | 51 | LQFP-64 | A/D 21x12b; D/A 2x.. | 512KB | 904 |
| STM32L151CBT6A (STMicroelectronics) | 32K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 128KB | 2,292 |
| STM32L151VET6 (STMicroelectronics) | 80K | 16K | 83 | LQFP-100 | A/D 25x12b; D/A 2x.. | 512KB | 2,210 |
| STM32L151CCT6 (STMicroelectronics) | 32K | 8K | 37 | LQFP-48 | A/D 14x12b; D/A 2x.. | 256KB | 1,499 |
| STM32L151C6T6A (STMicroelectronics) | 16K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 32KB | 1,743 |
| STM32L151C8T6 (STMicroelectronics) | 32K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 64KB | 6,759 |
Variants within the STM32L151 line primarily differ by Flash memory density, ranging from 32 KB to 512 KB, and package pin counts from 48-pin LQFP to 144-pin UFBGA. Certain 'A' suffix variants (e.g., C8T6A) indicate refreshed silicon revisions with optimized power characteristics or peripheral enhancements. Higher pin-count models like the RBT6 or RET6 provide more GPIOs and additional communication interfaces compared to the compact 48-pin C8 or CB models.
