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STM32L151RBT6

STM32L151RBT6

STMicroelectronics
Same L1 family with similar low-power features and pin count for projects that prefer the L151 variant differences.
Active742 in stock
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Overview

The STM32L151RBT6 is an ultra-low-power microcontroller based on the ARM Cortex-M3 core, operating at up to 32MHz. It features 128KB of Flash, 16KB of RAM, and 4KB of true EEPROM, making it ideal for battery-operated devices requiring persistent data storage. The device includes a wide range of analog and digital peripherals while maintaining a very low standby current of approximately 1.33uA.

Why Choose This Part

This MCU offers a high degree of power flexibility with multiple low-power modes and an operating voltage down to 1.65V. The inclusion of 4000 bytes of dedicated EEPROM simplifies firmware by providing a dedicated space for calibration and configuration parameters without external components.

Applications

Battery-Powered Data Loggers
Utilizes the 4KB of onboard EEPROM for reliable sensor data storage without wearing out Flash memory.
Handheld Medical Devices
Low power consumption and integrated 12-bit ADC/DAC support long-lasting portable diagnostic tools.
Utility Metering
Optimized for long-term deployment in water or gas meters where extremely low standby current is critical.

Key Specifications

Speed 32MHz
RAM Size 32K x 8
Core Size 32-Bit
EEPROM Size 4K x 8
Peripherals Brown-out Detect/Reset, Cap Sense, DMA, I2S, POR, PWM, WDT
Connectivity I2C, IrDA, LINbus, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 51
Core Processor ARM Cortex-M3
Package / Case 64-LQFP
Data Converters A/D 20x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 128KB (128K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 64-LQFP (10x10)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 3.6V

Getting Started

Development is best supported by the STM32Cube ecosystem, including STM32CubeIDE and the STM32CubeL1 firmware package. For hardware prototyping, use the NUCLEO-L152RE board, which features a similar L1 series target and integrated ST-LINK debugger.

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
STM32L151RBT6 (this part) 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
STM32L151RET6 80K 16K 51 LQFP-64 A/D 21x12b; D/A 2x.. 512KB 904
Also available as: STM32L151CBT6A

Also Consider

STM32L152RBT6 STMicroelectronics - Identical pinout and core but adds an integrated LCD controller for driving segmented displays.
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