STMicroelectronics STM32L152VCT6

Overview

STM32L152VCT6 from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 256KB Flash, 32KB SRAM, 8KB EEPROM with ECC, integrated LCD controller (8×40 segments), and USB 2.0 interface. It operates from 1.65–3.6 V across –40 °C to 105 °C and delivers 1.25 DMIPS/MHz performance - used in battery-powered medical sensors, portable industrial meters, and smart utility meters requiring long runtime and on-chip analog integration.

For engineers reviewing the STM32L152VCT6 datasheet, STM32L152VCT6 pinout, STM32L152VCT6 application, or STM32L152VCT6 equivalent, key selection considerations include its 0.44 µA Stop mode current, dual 12-bit ADCs (1 Msps, up to 25 channels), two 12-bit DACs with buffers, ultra-low-power comparators with wake-up capability, and 70 5V-tolerant I/Os mapped to 16 external interrupt vectors.

Technical Context

The STM32L152VCT6 implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) with sub-µA retention states and 8 µs wakeup latency. Its Cortex-M3 core supports MPU, Thumb-2 instruction set, and runs at up to 32 MHz using internal 16 MHz RC (+/-1%) or external 1–24 MHz crystal.

Analog subsystem includes two rail-to-rail op-amps, two ultra-low-power comparators (window mode + wake-up), temperature sensor, VREFINT, and LCD driver with step-up converter - all functional down to 1.8 V supply. USB 2.0 is supported via internal 48 MHz PLL, eliminating need for external crystal.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; 100-pin quad flat configuration supporting full peripheral mapping and debug interfaces (SWD/JTAG).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152VCT6, the STM32L432KCU6 trades analog integration and EEPROM for DSP capability, while the EFM32PG12B500F1024GL125 offers deeper sleep but omits USB and LCD - making STM32L152VCT6 uniquely balanced for display-enabled, battery-operated measurement systems.

Availability

STM32L152VCT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld testers, and environmental data loggers requiring stable component supply and long-term manufacturability.

Supply support for STM32L152VCT6 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 ICs, sensors, and automotive semiconductors since 1987.

The STM32L1 series targets ultra-low-power embedded applications - optimized for battery longevity, analog integration, and industrial temperature operation without sacrificing code density or real-time responsiveness.

FAQ

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

The STM32L152VCT6 achieves up to 32 MHz CPU frequency using the internal 16 MHz RC oscillator (trimmed to ±1%) or external crystal. At 32 MHz with code executing from Flash, typical current consumption is 185 µA/MHz - resulting in ~5.9 mA total. Dynamic voltage scaling adjusts core voltage to maintain efficiency across frequency ranges.

Does the device support hardware encryption or secure boot features?

No, the STM32L152VCT6 does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It relies on software-based security libraries and external secure elements for authentication or encrypted firmware updates - unlike later STM32L4/L5 series which integrate TRNG and AES-256.

Can the internal 32 kHz RTC oscillator be calibrated, and what is its accuracy?

Yes, the internal 32 kHz LSI oscillator can be calibrated against the 32.768 kHz external LSE crystal using the RTC_CALIB register. Uncalibrated LSI accuracy is ±10% over temperature; after calibration, typical drift is reduced to ±100 ppm - sufficient for non-precision timekeeping in metering or alarm applications.

Is the LCD driver compatible with both static and multiplexed segment displays?

Yes, the integrated LCD controller supports static, 2-, 3-, and 4-multiplex configurations up to 8 commons × 40 segments. It includes programmable contrast control, blinking mode, and an internal step-up converter generating VLCD from VDD - enabling direct drive of common segment LCDs without external bias circuitry.