EmbeddedRelated.com
The 2026 Embedded Online Conference
    Parts   Microcontrollers  STMicroelectronics    STM32L0 Family    STM32L072    STM32L072RBT6
STM32L072RBT6

STM32L072RBT6

STMicroelectronics
ARM® Cortex®-M0+ STM32L0 Microcontroller IC 32-Bit 32MHz 128KB (128K x 8) FLASH 64-LQFP (10x10)
Active749 in stock
Datasheet Digi-Key Compare Prices

Overview

The STM32L072RBT6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M0+ core operating at 32MHz. It features 128KB of Flash memory, 20KB of RAM, and 6KB of integrated EEPROM, specifically designed for battery-operated devices requiring high efficiency and USB connectivity.

Why Choose This Part

This MCU offers a high performance-to-power ratio with a Cortex-M0+ core that consumes only 8.5mA at 32MHz in run mode. It eliminates the need for external EEPROM by providing 6KB of on-chip data EEPROM and reduces BOM costs with a crystal-less USB implementation.

Applications

Battery-Powered IoT Sensors
Leverages the 0.29uA standby current and 1.65V to 3.6V operating range for extended field life.
USB Peripherals
Utilizes the crystal-less USB 2.0 interface for low-cost, compact computer accessories and data loggers.
Portable Medical Devices
Ideal for blood glucose meters or pulse oximeters using the 12-bit ADC with hardware oversampling and low-power modes.
Smart Utility Meters
Built-in RTC, True RNG, and firewall protection provide the necessary security and timing features for energy monitoring.

Key Specifications

Speed 32MHz
RAM Size 20K x 8
Core Size 32-Bit
EEPROM Size 6K x 8
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity I2C, IrDA, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 51
Core Processor ARM Cortex-M0+
Package / Case 64-LQFP
Data Converters A/D 16x12b; 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) 1.65V ~ 3.6V

Getting Started

Start development using the NUCLEO-L073RZ development board for hardware prototyping. Engineers can utilize the STM32CubeIDE ecosystem, which includes the STM32CubeMX initialization tool for configuring the low-power modes and clock tree.

Dev Boards

Development boards and breakout modules featuring the STM32L072RBT6 or compatible chips — ready to use for prototyping.

STM32L0538-DISCO STMicroelectronics
STM32L053C8 Discovery STM32L0 ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board
Digi-Key 36 in stock
NUCLEO-L073RZ STMicroelectronics
Development Boards & Kits - ARM STM32 Nucleo-64 development board STM32L073RZ MCU, supports Arduino & ST morpho
Digi-Key Mouser 263 in stock
Part of STM32L0 family » STM32L072

STM32L072 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number I/O Pins Package ADC/DAC Flash Stock
STM32L072RBT6 (this part) 51 LQFP-64 A/D 16x12b; D/A 2x.. 128KB 749
STM32L072CZT6TR Tape & Reel 37 LQFP-48 A/D 10x12b; D/A 2x.. 192KB 16,847
STM32L072RZT6 51 LQFP-64 A/D 16x12b; D/A 2x.. 192KB 2,003
STM32L072CZT6 37 LQFP-48 A/D 10x12b; D/A 2x.. 192KB 3,930
Also available as: STM32L072CBT6, STM32L072KZU7, STM32L072KZU6

Also Consider

STM32L053R8T6 STMicroelectronics - Lower cost alternative with 64KB Flash if the application does not require the full 128KB memory footprint.
ATSAMD21G18A-AU MCHPMicrochip Technology - Offers a higher 48MHz clock speed and larger 256KB Flash while maintaining USB support and low-power operation.
MSP430FR5994 TITexas Instruments - Features FRAM technology for even lower power consumption and faster non-volatile writes than traditional Flash/EEPROM.

Categories

Microcontrollers > STMicroelectronics
The 2026 Embedded Online Conference