STM32L151C6T6A
Overview
The STM32L151C6T6A is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M3 core, operating at up to 32MHz. It features 32KB of Flash memory and 16KB of RAM, specifically designed for energy-sensitive applications requiring a wide supply voltage range from 1.65V to 3.6V. The device integrates specialized features like a 4KB EEPROM, capacitive sensing support, and a low-power USB 2.0 interface.
Why Choose This Part
This MCU offers a unique balance of processing power and efficiency, featuring a dedicated 4KB data EEPROM which eliminates the need for external memory components in data-logging tasks. Its voltage range down to 1.65V allows for operation from a single-cell battery through most of its discharge cycle, while the 37 I/Os provide significant flexibility in a compact 48-LQFP package.
Applications
Key Specifications
Getting Started
Start development with the STM32 Nucleo-64 or Discovery kits compatible with the STM32L1 series. Use the STM32CubeIDE or Keil MDK for code development, and leverage the STM32CubeL1 firmware package for HAL drivers and low-power configuration examples. Hardware debugging is supported via the integrated SWD and JTAG interfaces.
Dev Boards
Development boards and breakout modules featuring the STM32L151C6T6A or compatible chips — ready to use for prototyping.
STM32L151 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | RAM | EEPROM Size | I/O Pins | Package | ADC/DAC | Flash | Stock |
|---|---|---|---|---|---|---|---|
| STM32L151C6T6A (this part) | 16K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 32KB | 1,743 |
| STM32L151RBT6 | 32K | 4K | 51 | LQFP-64 | A/D 20x12b; D/A 2x.. | 128KB | 742 |
| STM32L151C8T6A | 32K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 64KB | 6,742 |
| STM32L151CBT6A | 32K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 128KB | 2,292 |
| STM32L151VET6 | 80K | 16K | 83 | LQFP-100 | A/D 25x12b; D/A 2x.. | 512KB | 2,210 |
| STM32L151RET6 | 80K | 16K | 51 | LQFP-64 | A/D 21x12b; D/A 2x.. | 512KB | 904 |
| STM32L151CCT6 | 32K | 8K | 37 | LQFP-48 | A/D 14x12b; D/A 2x.. | 256KB | 1,499 |



