STMicroelectronics STM32L071V8T6

Overview

STM32L071V8T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP64 package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, 12-bit ADC (1.14 Msps), and operation from 1.65 V to 3.6 V across –40 °C to +125 °C. It delivers 0.95 DMIPS/MHz performance and supports 78 5V-tolerant I/Os - ideal for battery-powered industrial sensors and portable medical monitors requiring long runtime and robust analog integration.

For engineers reviewing the STM32L071V8T6 datasheet, STM32L071V8T6 pinout, STM32L071V8T6 application, or STM32L071V8T6 equivalent, key selection considerations include its 0.43 µA Stop mode current, 5 µs Flash wakeup time, dual ultra-low-power comparators with wake-up capability, and support for ISO 7816/IRDA on two USARTs - critical for secure, low-energy edge node design.

Technical Context

The STM32L071V8T6 integrates a Cortex-M0+ core with Memory Protection Unit (MPU), operating at up to 32 MHz with dynamic voltage scaling. Its clock system combines multiple internal oscillators (HSI16, LSI, MSI) and external sources (1–25 MHz HSE, 32 kHz LSE), enabling precise RTC calibration and flexible low-power mode transitions.

Power management includes five BOR thresholds, programmable voltage detector (PVD), and three distinct low-power modes (Stop, Standby, Low-power Run) with configurable RAM retention and wakeup sources - including 16 wakeup lines and 3 dedicated pins in Standby. Analog subsystem comprises a 12-bit ADC with hardware oversampling, two independent comparators (down to 1.65 V), and integrated temperature sensor with factory calibration.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L072V8T6 and STM32L073V8T6, the STM32L071V8T6 delivers identical ultra-low-power operation and peripheral count without crypto or CAN overhead - making it the most cost-efficient choice for resource-constrained, security-agnostic sensing and control systems.

Availability

STM32L071V8T6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical devices, industrial wireless sensor nodes, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for STM32L071V8T6 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 series targets ultra-low-power embedded applications demanding sub-µA sleep currents, robust analog integration, and long-term reliability - optimized for battery-operated IoT endpoints and energy-conscious industrial equipment.

FAQ

What is the maximum operating frequency and core type of the STM32L071V8T6?

The STM32L071V8T6 features an Arm Cortex-M0+ core rated for up to 32 MHz operation, delivering 0.95 DMIPS/MHz. It supports dynamic voltage scaling to maintain performance across 1.65–3.6 V supply range, with factory-trimmed 16 MHz HSI oscillator achieving ±1% accuracy - enabling precise timing without external crystal in cost-sensitive designs.

Does the STM32L071V8T6 support hardware encryption or secure boot?

No, the STM32L071V8T6 does not include hardware AES, TRNG, or secure boot circuitry. Those features are present in the STM32L072 and STM32L073 variants. The L071 relies on software-based cryptography libraries and standard boot mechanisms - appropriate for applications where physical security and cryptographic acceleration are not required.

How many I/O pins are 5V tolerant, and what is the maximum pin count for this part?

The STM32L071V8T6 in LQFP64 package provides 78 5V-tolerant I/Os out of its 64-pin count - all GPIOs except BOOT0, NRST, and oscillator pins support 5V logic levels. This eliminates external level shifters when interfacing with legacy 5V peripherals such as RS-232 transceivers, optocouplers, or industrial digital I/O modules.

What RTC accuracy can be achieved with the built-in 32.768 kHz oscillator calibration?

The LSE oscillator supports RTC calibration via the RCC_BDCR register, allowing fine-tuning of the 32.768 kHz signal to achieve ±1 ppm accuracy after factory calibration. Combined with temperature compensation algorithms using the integrated temperature sensor, typical RTC drift remains below ±2 ppm over –40 °C to +85 °C - sufficient for decade-long timestamping in utility meters and environmental loggers.