STMicroelectronics STM32L152VBH6A

Overview

STM32L152VBH6A from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 128 KB Flash, 32 KB SRAM, 4 KB EEPROM with ECC, integrated LCD controller (up to 8×40 segments), and USB 2.0 interface. It operates from 1.65 V to 3.6 V across –40°C to +105°C and delivers 1.25 DMIPS/MHz performance. It targets battery-powered industrial sensors, portable medical devices, and smart metering systems requiring long runtime and on-chip analog integration.

For engineers reviewing the STM32L152VBH6A datasheet, STM32L152VBH6A pinout, STM32L152VBH6A application, or STM32L152VBH6A equivalent, key selection criteria include standby current (0.28 µA), 12-bit ADC (1 Msps, 24 channels), dual 12-bit DACs, ultra-low-power comparators, and LCD driver capability - all in a 100-pin LQFP package.

Technical Context

The STM32L152VBH6A integrates an ARM Cortex-M3 core with MPU, supporting dynamic voltage scaling and multiple low-power modes including Stop (0.44 µA) and Standby (0.28 µA). Its clock system combines HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), and MSI (65 kHz–4.2 MHz) sources, plus a dedicated 48 MHz PLL for USB timing.

Analog subsystem includes a 12-bit ADC with up to 24 channels, two buffered 12-bit DACs, two ultra-low-power comparators with window mode and wake-up capability, and an on-chip temperature sensor. The LCD controller supports contrast adjustment and blinking, with integrated step-up converter - exclusive to STM32L152 variants.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with fully specified 100-pin mapping per STMicroelectronics DocID024330 Rev 5, Section 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152VBH6A, STM32L432KCU6 trades LCD/ECC EEPROM for higher compute throughput and deeper sleep, while EFM32PG12B500F1024GL125 achieves ultra-low shutoff current at the cost of USB and display integration - making STM32L152VBH6A optimal for display-equipped, USB-configurable, battery-powered instrumentation.

Availability

STM32L152VBH6A is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, and industrial wireless sensor nodes requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.

Supply support for STM32L152VBH6A 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 extended battery life, robust analog integration, and industrial-grade reliability - with the STM32L152VBH6A specifically optimized for display-enabled, USB-programmable, sensor-fused edge devices.

FAQ

What is the maximum operating frequency and associated power consumption of the STM32L152VBH6A?

The STM32L152VBH6A runs at up to 32 MHz with 185 µA/MHz in Run mode (typical), delivering 1.25 DMIPS/MHz. At 32 MHz, total active current is approximately 5.9 mA (VDD = 3.3 V, code from Flash). Dynamic voltage scaling allows reduced core voltage at lower frequencies to further cut power - e.g., 16 MHz operation draws ~2.8 mA under identical conditions.

Does the STM32L152VBH6A support USB device functionality without external components?

Yes - it integrates a full-speed USB 2.0 device PHY and a 48 MHz PLL, enabling direct USB connectivity using only a standard USB Type-A/B connector and minimal passive ESD protection. No external transceiver, clock source, or level-shifter is required, and the bootloader supports DFU (Device Firmware Upgrade) over USB out of reset.

How does the LCD controller differ between STM32L151 and STM32L152 variants?

The LCD controller is exclusive to STM32L152x6/8/B-A devices (including STM32L152VBH6A) and absent in STM32L151 variants. It supports up to 8×40 segments, on-chip step-up converter (VLCD rail), contrast adjustment, and blinking mode - eliminating external LCD bias ICs and reducing PCB layer count in display applications.

What packaging and RoHS compliance status applies to the STM32L152VBH6A?

The STM32L152VBH6A is supplied in a RoHS-compliant, lead-free LQFP100 package (14 × 14 mm, 0.5 mm pitch) with matte tin finish. It meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) and supports reflow soldering per IPC/JEDEC J-STD-020D. Full compliance documentation (REACH, halogen-free, conflict minerals) is available from STMicroelectronics' product page.