STMicroelectronics STM32L152VET6

Overview

STM32L152VET6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller with 512 KB Flash, 80 KB SRAM, 16 KB EEPROM, integrated LCD driver (8×40 segments), USB 2.0 interface, and dual 12-bit ADCs (1 Msps, up to 40 channels). It operates from 1.65 V to 3.6 V across –40 °C to +105 °C and targets battery-powered medical sensors and portable industrial meters requiring long runtime and on-chip analog integration.

For engineers reviewing the STM32L152VET6 datasheet, STM32L152VET6 pinout, STM32L152VET6 application, or STM32L152VET6 equivalent, key selection criteria include standby current (290 nA), RTC-enabled Stop mode (1.11 µA), 102 I/Os (5V tolerant), USB 2.0 support with internal 48 MHz PLL, and LCD controller with step-up converter - all validated for low-power embedded control in constrained environments.

Technical Context

The STM32L152VET6 implements dynamic voltage scaling and multiple low-power modes (Run, Sleep, Low-power Run, Stop, Standby) with hardware-accelerated wake-up from Stop mode in 8 µs. Its Cortex-M3 core runs at up to 32 MHz with 1.25 DMIPS/MHz and includes a memory protection unit (MPU) for secure task isolation.

Analog subsystem integration includes two operational amplifiers, two ultra-low-power comparators with window mode and wake-up capability, a 12-bit DAC (2 ch, buffered), and temperature sensor with calibrated VREFINT - all functional down to 1.8 V supply, enabling single-supply sensor front-end designs without external signal conditioning.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100-pin footprint and exposed thermal pad. Compatible with standard reflow profiles and manual inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152VET6, the STM32L432KCU6 trades EEPROM and LCD for FPU and lower standby current, while the STM32L072RBT6 reduces memory and peripheral count to cut cost - making the L152 optimal for display-integrated, EEPROM-dependent, USB-connected ultra-low-power systems.

Availability

STM32L152VET6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld terminals, and environmental data loggers requiring stable component supply across extended product lifecycles.

Supply support for STM32L152VET6 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 STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, integrated analog peripherals, and robust operation across industrial temperature ranges - optimized for sensor nodes, wearables, and metering devices.

FAQ

Does STM32L152VET6 support USB device mode without external components?

Yes. The STM32L152VET6 integrates a full-speed USB 2.0 transceiver with internal pull-up resistors and a dedicated 48 MHz PLL, enabling USB device mode (e.g., CDC, HID, MSC) using only a standard USB Type-A connector and decoupling capacitors - no external PHY or clock crystal required.

What is the maximum operating frequency when running from internal RC oscillators?

The STM32L152VET6 achieves up to 32 MHz using its internal 16 MHz factory-trimmed HSI oscillator combined with the PLL. The HSI accuracy is ±1% over temperature and voltage, and the PLL maintains stability across the full 1.65–3.6 V supply range, supporting full-performance operation without external crystal.

How does the LCD controller handle contrast control in battery-powered applications?

The LCD controller includes programmable contrast adjustment via software-controlled voltage steps and an integrated step-up converter that generates VLCD (up to 5.5 V) from the main VDD supply. This eliminates external charge pumps and allows dynamic contrast tuning to maintain visibility as battery voltage declines - critical for long-life portable displays.

Can the 16 KB EEPROM be used for secure key storage?

No. While the 16 KB EEPROM supports ECC and endurance of 400k write cycles, it lacks hardware encryption, access control, or tamper resistance. For secure key storage, external secure elements (e.g., STSAFE-A) or software-based key wrapping with external entropy sources are required - the EEPROM serves best for non-sensitive calibration data and configuration parameters.