STMicroelectronics STM32L072VBI6

Overview

STM32L072VBI6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP100 package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, USB 2.0 crystal-less interface, and dual 12-bit DACs. It operates from 1.65–3.6 V across –40 to +125 °C, delivering 93 µA/MHz in Run mode and 0.29 µA in Standby - deployed in battery-powered industrial sensors and portable medical monitors.

For engineers reviewing the STM32L072VBI6 datasheet, STM32L072VBI6 pinout, STM32L072VBI6 application, or STM32L072VBI6 equivalent, key selection criteria include low-power mode current specs (Stop/Standby), USB crystal-less timing tolerance, DAC output buffer voltage range (down to 1.8 V), and 78 I/Os with 5V tolerance - all confirmed in DS10689 Rev 5.

Technical Context

The STM32L072VBI6 integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling and clock gating for multi-level power optimization. Its memory subsystem includes dual-bank Flash with read-while-write capability and ECC protection on both Flash and EEPROM - enabling safe firmware updates and data logging in field-deployed devices.

Peripherals are routed via an interconnect matrix supporting concurrent DMA transfers across ADC, USB, USART, and DAC. The clock system combines factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC - allowing precise timekeeping and crystal-less USB operation without external components.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal dissipation in compact industrial modules and certified ECOPACK2 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L072VBI6, STM32L073VBT6 trades USB flexibility for LCD capability, while STM32L432KCU6 upgrades compute performance at the cost of EEPROM and ultra-low-power efficiency - making the VBI6 optimal for USB-enabled, EEPROM-dependent, battery-critical deployments.

Availability

STM32L072VBI6 is available at Aetrix Electronics and suitable for smart utility meters, portable ECG monitors, industrial wireless sensor nodes, and asset tracking beacons requiring stable component supply and long-term lifecycle assurance.

Supply support for STM32L072VBI6 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, designing and manufacturing microcontrollers, power management ICs, and MEMS sensors for industrial, automotive, and consumer markets.

The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust memory integrity, and rich analog integration - optimized for IoT edge nodes and portable medical devices.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM32L072VBI6 runs at up to 32 MHz with 93 µA/MHz typical current draw when executing code from Flash. At full speed, this yields ~2.98 mA total active current - verified in DS10689 Table 30 under VDD = 3.3 V, 25 °C, and code execution from Flash with peripherals disabled.

Does the device support hardware encryption or secure boot features?

The STM32L072VBI6 includes a true RNG and firewall protection for memory isolation, but lacks dedicated AES or PKA accelerators. Secure boot is implemented via option bytes and read-out protection (RDP Level 1/2), with bootloader validation possible in user firmware - not hardware-enforced like in STM32L5 or H5 series.

Can the 12-bit DAC outputs drive loads directly, and what is their voltage compliance?

Yes - both DAC channels integrate rail-to-rail output buffers supporting loads down to 1.8 V supply. Each delivers ±1 LSB INL/DNL up to 1 µA load, with full-scale output ranging from 0 to VREF+ (typically VDD). Buffer output impedance is <1 Ω, enabling direct connection to op-amp inputs or low-impedance sensors.

How many I/O pins support capacitive sensing, and are they shared with other functions?

The device supports up to 24 capacitive sensing channels across GPIOs on ports A, B, C, D, E, and H - listed explicitly in DS10689 Table 9. These pins are multiplexed: each TSC channel maps to a specific alternate function (AF0), and remain usable as standard GPIO or peripheral functions when TSC is disabled.