STMicroelectronics STM32L152VDT6X

Overview

STM32L152VDT6X from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 384 KB Flash with ECC, 80 KB SRAM, 16 KB true EEPROM, integrated LCD controller (up to 8×40 segments), USB 2.0 interface, and dual 12-bit ADC/DAC. It operates from 1.65 V to 3.6 V across –40 °C to +105 °C and targets battery-powered portable instrumentation and smart sensors requiring long runtime and on-chip analog integration.

For engineers reviewing the STM32L152VDT6X datasheet, STM32L152VDT6X pinout, STM32L152VDT6X application, or STM32L152VDT6X equivalent, key selection criteria include standby current (290 nA), RTC-enabled Stop mode (1.11 µA), 12-bit ADC with 1 Msps sampling, dual DAC output buffers, and 102 I/Os with 5V tolerance - all validated for industrial-grade reliability in constrained power environments.

Technical Context

The STM32L152VDT6X implements a dual-voltage domain architecture with separate regulator domains for core (V_DD) and I/O (V_DDIO), enabling dynamic voltage scaling down to 1.2 V core supply during low-power run mode. Its clock system integrates six independent oscillators - including 32 kHz LSE for RTC calibration and 16 MHz HSI factory-trimmed to ±1% - feeding a programmable PLL for USB (48 MHz) and CPU clock generation.

Analog subsystem integration includes two rail-to-rail operational amplifiers, two ultra-low-power comparators with window mode and wakeup capability, and a temperature sensor with calibrated accuracy (±1.5 °C). The LCD controller supports contrast adjustment, blinking, and internal step-up converter - exclusive to STM32L152 variants (not present in L151).

Key Specifications

Pinout & Package

LQFP100 package: 100-pin low-profile quad flat package with 0.5 mm pitch, 14 × 14 mm body size, and exposed thermal pad (EPAD) for enhanced heat dissipation in continuous operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152VDT6X, STM32L432KCU6 offers superior compute density and lower standby at the cost of EEPROM and LCD integration, while EFM32PG12B500F1024GL125 provides higher memory and DC-DC efficiency but sacrifices USB connectivity and display capability - making STM32L152VDT6X optimal for integrated, display-equipped, battery-constrained applications.

Availability

STM32L152VDT6X is available at Aetrix Electronics and suitable for wearable health monitors, smart gas sensor nodes, industrial panel meters, and PLC I/O modules requiring stable component supply across extended product lifecycles.

Supply support for STM32L152VDT6X 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, delivering intelligent power, analog, MEMS, and microcontroller solutions for automotive, industrial, and consumer markets.

The STM32L1 series targets ultra-low-power embedded applications demanding multi-year battery life, integrated analog peripherals, and robust industrial temperature operation - with STM32L152VDT6X representing the high-memory, LCD-enabled variant optimized for human-interface and sensor-fusion designs.

FAQ

What is the maximum operating frequency and core voltage range for STM32L152VDT6X?

The STM32L152VDT6X operates at up to 32 MHz using its ARM Cortex-M3 core, with core supply (VDD) ranging from 1.65 V to 3.6 V. Dynamic voltage scaling allows reduction of core voltage to 1.2 V in low-power run mode, maintaining 16 MHz operation while minimizing active current consumption to 11 µA.

Does STM32L152VDT6X support USB device functionality without external components?

Yes - STM32L152VDT6X integrates a full-speed USB 2.0 transceiver with internal pull-up resistors on PA11/PA12. When powered from 3.3 V, it enumerates as a USB device without external PHY or pull-up resistors, supporting CDC, HID, and MSC class implementations directly from Flash-resident firmware.

How does the 16 KB EEPROM differ from standard Flash memory in this MCU?

This 16 KB EEPROM is true byte-erasable memory with built-in ECC and wear leveling, distinct from Flash which requires sector erasure. It supports 400 k erase/write cycles and 20-year data retention at 85 °C, enabling reliable storage of calibration data, configuration parameters, and event logs without software emulation overhead or endurance limitations.

Can the LCD controller drive both static and multiplexed segment displays?

Yes - the integrated LCD controller supports static, 2-, 3-, and 4-multiplex configurations, driving up to 8 commons and 40 segments (320 segments total). It includes programmable contrast control, blinking mode, and an internal step-up converter generating up to 5.5 V from 3.3 V supply - eliminating need for external bias generators in most segment LCD applications.