STMicroelectronics STM32L072V8T6

Overview

STM32L072V8T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 64 KB Flash, 20 KB SRAM, and 6 KB EEPROM; features USB 2.0 (crystal-less), dual 12-bit DACs, 12-bit ADC (1.14 Msps), and operates from 1.65–3.6 V across –40 to +125 °C. It targets battery-powered IoT sensors and portable medical devices requiring long runtime and analog signal conditioning.

For engineers reviewing the STM32L072V8T6 datasheet, STM32L072V8T6 pinout, STM32L072V8T6 application, or STM32L072V8T6 equivalent, key selection criteria include standby current (0.29 µA), 5 µs Flash wakeup time, USB crystal-less operation, 78 5V-tolerant I/Os, and integrated true RNG with firewall protection.

Technical Context

The STM32L072V8T6 integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run). Its clock system includes factory-trimmed 16 MHz HSI, 48 MHz HSI48 for USB, 32 kHz LSE for RTC, and PLL for CPU frequency up to 32 MHz.

Analog subsystem comprises two buffered 12-bit DACs (down to 1.8 V), a 16-channel 12-bit ADC (1.14 Msps, down to 1.65 V), two ultra-low-power comparators with window mode and wake-up capability, and a 24-channel capacitive sensing controller - all optimized for sub-1 µA active analog operation.

Key Specifications

Pinout & Package

LQFP64 (10×10 mm, 0.5 mm pitch) package with exposed thermal pad - provides mechanical stability and enhanced thermal dissipation for sustained low-power operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L073V8T6, this part trades LCD support and Flash size for lower unit cost and identical low-power performance; versus STM32L053R8T6, it adds USB, EEPROM, and 16 more I/Os - making it optimal for feature-rich, battery-constrained endpoints needing secure, calibrated analog I/O.

Availability

STM32L072V8T6 is available at Aetrix Electronics and suitable for wearable health monitors, smart gas sensor nodes, industrial wireless actuators, and portable diagnostic devices requiring stable component supply across extended product lifecycles.

Supply support for STM32L072V8T6 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, MEMS, and automotive semiconductors since 1987.

The STM32L0 series targets ultra-low-power embedded applications - specifically battery-operated sensors, wearables, and energy-harvesting systems - with architecture-level optimizations for sub-µA sleep currents and fast wakeup latency.

FAQ

What is the minimum operating voltage for the ADC and DAC on STM32L072V8T6?

The 12-bit ADC operates down to 1.65 V supply, enabling accurate measurements even as battery voltage declines. The dual 12-bit DACs function down to 1.8 V with internal output buffers - sufficient for driving reference voltages or analog actuators in single-cell Li-ion or alkaline systems.

Does STM32L072V8T6 support USB without an external crystal?

Yes - it integrates a factory-calibrated 48 MHz HSI48 RC oscillator with automatic trimming against USB SOF packets, achieving ±0.25% accuracy across temperature and voltage. This eliminates the need for a 48 MHz crystal, reducing BOM count and PCB area while maintaining full USB 2.0 full-speed compliance.

How many I/O pins are 5V tolerant, and which ones are excluded?

72 of the 78 GPIOs are 5V tolerant (all except PC13–PC15 and the USB D+/D− pins PB14/PB15). This allows direct interfacing with 5 V logic, industrial sensors, and legacy peripherals without level shifters - critical for mixed-voltage industrial and automotive subsystems.

What security features does STM32L072V8T6 provide for firmware and data protection?

It includes hardware firewall partitioning memory into secure/non-secure zones, true RNG certified to NIST SP800-90B, ECC on Flash and EEPROM, and tamper-detect pins. These features enable secure boot, encrypted firmware updates, and protected storage of calibration data or cryptographic keys without external secure elements.