STMicroelectronics STM32L010RBT6

Overview

STM32L010RBT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP64 package, featuring 128 KB Flash, 20 KB SRAM, 512-byte EEPROM, 12-bit ADC (1.14 Msps), and operation down to 1.8 V. It delivers 0.95 DMIPS/MHz performance with 5 µs wakeup from Flash and supports critical battery-powered applications including smart meters and wearable sensors.

For engineers reviewing the STM32L010RBT6 datasheet, STM32L010RBT6 pinout, STM32L010RBT6 application, or STM32L010RBT6 equivalent, key selection criteria include standby current (0.29 µA), RTC-enabled Stop mode power (0.86 µA), 45 5-V-tolerant I/Os, and integrated bootloader supporting USART/I2C/SPI.

Technical Context

The STM32L010RBT6 implements a single-core Arm Cortex-M0+ running at up to 32 MHz with dynamic voltage scaling across three operating ranges. Its clock system integrates multiple internal sources - 16 MHz HSI (±1%), 37 kHz LSI, 65 kHz–4.2 MHz MSI, and 32 kHz LSE - plus external crystal and bypass support, enabling precise low-power timing control for RTC and wake-up events.

Power management includes five brownout reset (BOR) thresholds, POR/PDR circuitry, and seven low-power modes (Run, Sleep, Low-power Run/Sleep, Stop, Standby). The device uses an interconnect matrix to route peripherals-including four communication interfaces (USART, LPUART, SPI, I2C), eight timers (including ultra-low-power LPTIM), and 7-channel DMA-to memory and CPU without bus contention.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch), ECOPACK2-compliant surface-mount package with exposed thermal pad (not electrically connected). Designed for automated assembly and thermal reliability in space-constrained industrial and portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L010RBT6, STM32L031K6T6 reduces memory and cost for basic control tasks, while EFM32ZG222F32 offers deeper sleep but fewer I/Os and no LPUART - making STM32L010RBT6 optimal for feature-rich, battery-constrained edge nodes needing robust analog and communication capability.

Availability

STM32L010RBT6 is available at Aetrix Electronics and suitable for smart utility metering, wearable health monitors, industrial wireless sensor nodes, and low-power remote controls requiring stable component supply across long-lifecycle deployments.

Supply support for STM32L010RBT6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32L0 value line targets cost-sensitive, ultra-low-power applications where extended battery life, small footprint, and integrated peripherals reduce BOM count - specifically engineered for metering, wearables, and IoT edge nodes.

FAQ

What is the maximum operating frequency and corresponding supply voltage range?

The STM32L010RBT6 operates up to 32 MHz when supplied between 2.4 V and 3.6 V (Voltage Range 1). At 1.8–2.4 V (Range 2), max frequency is 16 MHz; below 1.8 V (Range 3), it is limited to 2 MHz. These ranges are enforced by the internal voltage regulator and dynamic voltage scaling logic to maintain timing integrity and power efficiency.

Does STM32L010RBT6 support hardware encryption or secure boot?

No. The STM32L010RBT6 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. Security relies on software-implemented algorithms and external secure elements. For certified secure firmware updates, ST recommends migrating to STM32L5 or STM32U5 series, which integrate TrustZone and cryptographic peripherals.

Can the 512-byte EEPROM be used for storing calibration data across power cycles?

Yes. The integrated 512-byte data EEPROM supports byte-write and page-erase operations with guaranteed endurance of 100,000 write/erase cycles and data retention of 15 years at 25 °C. It is accessed via dedicated HAL drivers and retains values during all low-power modes except Standby with VDD off, making it ideal for sensor calibration coefficients and device-specific configuration.

Is the LQFP64 package RoHS and REACH compliant?

Yes. The STM32L010RBT6 in LQFP64 package is ECOPACK2-compliant, meeting RoHS Directive 2011/65/EU (lead-free terminations), REACH Regulation (EC) No. 1907/2006, and halogen-free requirements (<900 ppm bromine, <900 ppm chlorine). Full compliance documentation is available in ST's official product change notices and material declarations.