STM32L151VET6
Overview
The STM32L151VET6 is an ultra-low-power 32-bit microcontroller based on the Arm Cortex-M3 core operating at 32MHz. It features 512KB of Flash memory, 80KB of RAM, and 16KB of true EEPROM, making it suitable for complex applications requiring data persistence and high energy efficiency. This device is designed for battery-operated systems, offering specialized low-power modes and a high pin-count 100-LQFP package for extensive I/O requirements.
Why Choose This Part
The primary advantage is the combination of high-density 512KB Flash with 16KB of dedicated EEPROM, which eliminates the need for external non-volatile memory in many designs. Its ultra-low-power architecture achieves a standby current of just 1.11uA while maintaining a versatile set of peripherals including USB and 83 I/O pins. The Cortex-M3 core provides a balance of performance and efficiency for middle-tier embedded applications.
Applications
Key Specifications
Getting Started
Developers can begin evaluation with the STM32 Nucleo-144 or Discovery kits compatible with the STM32L1 series. Software development is supported by the STM32CubeL1 MCU Package, which includes HAL and LL drivers, and can be used within the STM32CubeIDE or other standard Arm toolchains like Keil MDK or IAR EWARM. The internal 16MHz factory-trimmed RC oscillator allows for immediate startup without an external crystal.
Dev Boards
Development boards and breakout modules featuring the STM32L151VET6 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 |
|---|---|---|---|---|---|---|---|
| STM32L151VET6 (this part) | 80K | 16K | 83 | LQFP-100 | A/D 25x12b; D/A 2x.. | 512KB | 2,210 |
| 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 |
| 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 |
| STM32L151C6T6A | 16K | 4K | 37 | LQFP-48 | A/D 16x12b; D/A 2x.. | 32KB | 1,743 |



