STMicroelectronics STM32L152VCT6A

Overview

STM32L152VCT6A from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller featuring 256 KB Flash, 32 KB SRAM, 8 KB EEPROM with ECC, integrated LCD controller (8×40 segments), and dual 12-bit DACs. It operates from 1.65–3.6 V across –40°C to +105°C and delivers 1.25 DMIPS/MHz at up to 32 MHz-targeted for battery-powered medical sensors, portable industrial meters, and smart utility endpoints requiring long runtime and on-chip analog integration.

For engineers reviewing the STM32L152VCT6A datasheet, STM32L152VCT6A pinout, STM32L152VCT6A application, or STM32L152VCT6A equivalent, key selection criteria include standby current (305 nA), stop mode + RTC consumption (1.35 µA), 12-bit ADC with 40-channel multiplexing, USB 2.0 full-speed interface with internal 48 MHz PLL, and 102 I/Os with 5V tolerance-critical for mixed-signal embedded designs with stringent power and peripheral consolidation requirements.

Technical Context

This MCU implements dynamic voltage scaling and multiple low-power modes-including Stop (0.475 µA), Standby (305 nA), and Low-power Run (11 µA)-with hardware-accelerated wakeup via 16 dedicated lines or 3 pins. Its Cortex-M3 core integrates a memory protection unit (MPU) and supports Thumb-2 instruction set for deterministic real-time execution.

Analog subsystem includes two rail-to-rail operational amplifiers, two ultra-low-power comparators with window mode and wake-up capability, a 12-bit 1 Msps ADC (up to 40 channels), and two buffered 12-bit DACs-enabling closed-loop sensor signal conditioning and precision actuator control without external components.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch) with 100 leads; thermally enhanced exposed pad for improved heat dissipation in compact industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152VCT6A, STM32L432KCU6 trades EEPROM and LCD for FPU and security features, while EFM32PG12B500F1024GL125 offers larger memory and lower Stop-equivalent current but omits USB and display support-making STM32L152VCT6A optimal for cost-sensitive, LCD-equipped, battery-metering designs requiring on-chip nonvolatile parameter storage.

Availability

STM32L152VCT6A is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial process transmitters, and asset tracking beacons requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and voltage ranges.

Supply support for STM32L152VCT6A 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, integrated analog peripherals, and robust memory reliability-specifically engineered for metering, wearable health devices, and industrial IoT edge nodes.

FAQ

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

The STM32L152VCT6A runs at up to 32 MHz with dynamic voltage scaling. At 32 MHz and 3.3 V, typical Run mode current is 230 µA/MHz (7.36 mA total), verified per DS10262 Rev 8 Table 17. This includes code execution from Flash with active peripherals; reducing clock speed or disabling unused clocks lowers consumption proportionally.

Does this MCU support hardware encryption or secure boot features?

No. The STM32L152VCT6A lacks dedicated cryptographic accelerators (AES, PKA) or secure boot ROM. It provides a 96-bit unique ID and CRC calculation unit for basic firmware integrity checks, but secure key storage and encrypted firmware updates require external secure elements or software-based implementations.

Can the internal 32.768 kHz LSE oscillator drive an external RTC chip?

Yes. The LSE output (PC14) can be configured as a clock source for external devices. However, the LSE is optimized for the internal RTC and calibrated for ±20 ppm accuracy at 25°C; driving external loads may degrade stability unless buffered. For precise external RTC synchronization, use the dedicated RTC_OUT pin (PC13) in bypass mode.

Is the 8 KB EEPROM truly wear-levelled and endurance-rated?

Yes. ST specifies 400,000 write/erase cycles and 20-year data retention at 85°C for the 8 KB EEPROM (DS10262 Rev 8 Section 6.3.9). It uses hardware wear leveling and ECC correction-no external software management is needed for reliable parameter storage across product lifetime.