STMicroelectronics STM32L152VBT6TR

Overview

STM32L152VBT6TR from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller in LQFP100 package, featuring 128 KB Flash, 16 KB SRAM, 4 KB EEPROM with ECC, USB 2.0 interface, and integrated LCD controller (up to 8×40 segments). It operates from 1.65 V to 3.6 V and supports -40°C to +85°C industrial temperature range, targeting battery-powered portable instrumentation and smart sensors.

For engineers reviewing the STM32L152VBT6TR datasheet, STM32L152VBT6TR pinout, STM32L152VBT6TR application, or STM32L152VBT6TR equivalent, key selection criteria include standby current (0.3 µA), 12-bit ADC (1 Msps, 24 channels), dual 12-bit DACs, ultra-low-power comparators, and USB 2.0 compliance with internal 48 MHz PLL - all validated for energy-constrained embedded control.

Technical Context

The STM32L152VBT6TR integrates a 32 MHz ARM Cortex-M3 core with MPU, dynamic voltage scaling, and five low-power modes (Run, Sleep, Low-power Run, Stop, Standby) optimized for sub-µA retention. Its clock system combines HSE (1–24 MHz), LSE (32.768 kHz), HSI (16 MHz ±1%), LSI (37 kHz), and MSI (65 kHz–4.2 MHz) sources, plus a dedicated USB PLL.

Analog subsystem includes a 12-bit ADC with up to 24 external channels and 1 Msps sampling rate, two buffered 12-bit DACs, two ultra-low-power comparators with window mode and wake-up capability, and an on-chip temperature sensor calibrated at factory. The LCD controller supports contrast adjustment and blinking, with integrated step-up converter.

Key Specifications

Pinout & Package

LQFP100 package: 100-pin low-profile quad flat package, 14 mm × 14 mm body, 0.5 mm pitch, exposed pad optional, RoHS-compliant, rated for industrial temperature range (-40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M3 microcontroller applications.

Compared with STM32L152VBT6TR, STM32L072VBT6 trades LCD/DAC/analog depth for marginally lower active power and simpler BOM, while STM32L432KCU6 adds FPU and Flash at the expense of EEPROM, LCD, and pin-compatible integration - making STM32L152VBT6TR uniquely balanced for display-enabled, battery-critical sensor nodes.

Availability

STM32L152VBT6TR is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial data loggers, and asset tracking beacons requiring stable component supply across extended product lifecycles.

Supply support for STM32L152VBT6TR 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 automotive semiconductors since 1987.

The STM32L1 series targets ultra-low-power embedded applications demanding long battery life, robust analog integration, and industrial-grade reliability - with the STM32L152VBT6TR representing its highest-feature variant in LQFP100 packaging.

FAQ

What is the maximum operating frequency and core architecture of the STM32L152VBT6TR?

The STM32L152VBT6TR features an ARM Cortex-M3 32-bit core with a maximum CPU frequency of 32 MHz, delivering 1.25 DMIPS/MHz (Dhrystone 2.1). It includes a Memory Protection Unit (MPU) and supports dynamic voltage scaling to optimize performance versus power consumption across five low-power modes.

Does the STM32L152VBT6TR include integrated EEPROM, and what are its endurance specifications?

Yes, it integrates 4 KB of true EEPROM with built-in ECC, rated for 100,000 write/erase cycles and 20-year data retention at 85°C. This on-chip EEPROM eliminates the need for external serial EEPROM in applications requiring non-volatile parameter storage, such as calibration data or device configuration.

Can the STM32L152VBT6TR drive an LCD display without external components?

Yes - it includes a dedicated LCD controller supporting up to 8×40 segments, with on-board step-up converter, contrast adjustment, and blinking mode. No external bias generator, charge pump, or external resistors are required, reducing BOM count and PCB area for display-integrated designs.

What USB capabilities does the STM32L152VBT6TR support, and is an external PHY required?

It integrates a full-speed USB 2.0 device interface with an internal 48 MHz PLL, supporting CDC, HID, and MSC classes. PA11 (D−) and PA12 (D+) are dedicated USB pins with internal pull-ups; no external PHY, oscillator, or termination resistors are needed for basic USB connectivity.