STMicroelectronics STM32L152VDT6

Overview

STM32L152VDT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller with 384 KB Flash, 48 KB SRAM, 12 KB EEPROM, integrated LCD driver (8×40 segments), USB 2.0 interface, and dual 12-bit DACs. It operates from 1.65–3.6 V across –40°C to +105°C, delivering 33.3 DMIPS at up to 32 MHz, and targets battery-powered medical sensors, portable meters, and smart wearables requiring long runtime and analog integration.

For engineers reviewing the STM32L152VDT6 datasheet, STM32L152VDT6 pinout, STM32L152VDT6 application, or STM32L152VDT6 equivalent, key selection factors include its 0.475 µA Stop mode current, 12-bit ADC with 40-channel multiplexing, 3x operational amplifiers, 2x ultra-low-power comparators with wakeup capability, and LQFP100 package compatibility with industrial-grade thermal performance.

Technical Context

This MCU implements dynamic voltage scaling and multiple low-power modes-Stop (0.475 µA), Standby (305 nA), and Low-power Run (11 µA)-with sub-8 µs wakeup. Its memory subsystem includes ECC-protected Flash (dual-bank RWW), true EEPROM, and FSMC supporting SRAM/PSRAM/NOR interfaces for external memory expansion.

The analog subsystem integrates a 12-bit 1 Msps ADC with internal temperature sensor and VREFINT, two buffered 12-bit DACs, three rail-to-rail op-amps, and two window-mode comparators-all functional down to 1.8 V supply. Clock architecture combines HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), and MSI (65 kHz–4.2 MHz) with PLL for USB clock generation.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; 102 general-purpose I/Os (100 usable + NRST + BOOT0), all mappable to 16 external interrupt vectors; 100% 5V-tolerant on I/Os except analog inputs and USB pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152VDT6, the STM32L432KCU6 trades EEPROM and LCD for FPU and lower Stop current, while the EFM32PG12B500F1024GL125 offers larger memory and EEPROM but omits USB and display support - making STM32L152VDT6 uniquely balanced for display-integrated, USB-updatable, battery-constrained systems.

Availability

STM32L152VDT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart energy meters, industrial handheld terminals, and wireless sensor nodes requiring stable component supply across multi-year production cycles.

Supply support for STM32L152VDT6 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, analog integration, and industrial temperature resilience - with the STM32L152VDT6 optimized for display-equipped, USB-connected, sensor-rich edge devices.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM32L152VDT6 achieves a maximum CPU frequency of 32 MHz with 230 µA/MHz typical current draw in Run mode. At full speed, total active current is approximately 7.4 mA (230 µA × 32), verified per DS8576 Rev 13 Table 17. Dynamic voltage scaling allows reduced Vcore at lower frequencies to further cut power in variable-workload applications.

Does the device support hardware encryption or secure boot features?

No, the STM32L152VDT6 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It provides a 96-bit unique ID and optional readout protection (RDP) level 1/2 for basic firmware confidentiality, but secure key storage and authenticated boot require external secure elements or software-based implementations.

Can the internal 12-bit DAC outputs drive standard analog loads directly?

Yes - both DAC channels feature integrated output buffers capable of driving resistive loads down to 5 kΩ and capacitive loads up to 100 pF, as specified in DS8576 Rev 13 Section 6.3.20. For higher-current or low-impedance applications (e.g., driving op-amp inputs or filters), external buffering is recommended to maintain linearity and settling time.

Is the LCD controller compatible with segment-based glass displays only, or does it support dot-matrix panels?

The integrated LCD controller supports only static and multiplexed segment-based displays (up to 8 commons × 40 segments), not dot-matrix or graphic LCDs. It includes built-in contrast control, blinking mode, and an internal step-up converter for bias voltage generation - eliminating external charge pumps in segment-display applications.