STMicroelectronics STM32L152V8T6TR

Overview

STM32L152V8T6TR from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller in LQFP100 package, featuring 128 KB Flash, 16 KB SRAM, 4 KB EEPROM with ECC, USB 2.0 interface, and integrated LCD controller (supporting up to 8×40 segments). It operates from 1.65 V to 3.6 V across -40°C to +85°C and targets battery-powered medical sensors, portable meters, and smart utility endpoints requiring sub-µA standby current and on-chip analog precision.

For engineers reviewing the STM32L152V8T6TR datasheet, STM32L152V8T6TR pinout, STM32L152V8T6TR application, or STM32L152V8T6TR equivalent, key selection criteria include its 0.3 µA Standby mode (3 wakeup pins), 12-bit ADC with 24 channels and 1 Msps sampling, dual 12-bit DACs with output buffers, ultra-low-power comparators with wake-up capability, and full USB 2.0 compliance with internal 48 MHz PLL.

Technical Context

The STM32L152V8T6TR implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) managed by an integrated ultra-safe BOR with five thresholds and programmable voltage detector (PVD). Its clock system integrates six sources: HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), LSI (37 kHz), MSI (65 kHz–4.2 MHz), and a USB-capable PLL.

Analog subsystem includes a 12-bit ADC with hardware oversampling, two buffered 12-bit DACs, two ultra-low-power comparators supporting window mode and wake-up, and an on-chip temperature sensor with factory calibration. The LCD controller supports contrast adjustment and blinking mode, with integrated step-up converter - exclusive to STM32L152xx variants.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 83 fast I/Os (73 I/Os 5V tolerant), all mappable to 16 external interrupt vectors. Includes dedicated V_DDA/V_SSA, V_REF+/V_REF-, and LCD segment/common pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L152V8T6TR, STM32L432KCU6 trades LCD integration and EEPROM for higher CPU performance and lower deep-sleep current, while EFM32PG12B500F1024GL125 offers larger memory and deeper sleep at the cost of USB and display capability - making STM32L152V8T6TR optimal for compact, display-equipped, USB-configurable edge devices.

Availability

STM32L152V8T6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical sensors, industrial wireless nodes, and asset tracking beacons requiring stable component supply and long-term lifecycle support.

Supply support for STM32L152V8T6TR 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 optimized for metering, wearable health, and intelligent sensor nodes.

FAQ

What is the maximum operating frequency and core type of the STM32L152V8T6TR?

The STM32L152V8T6TR features an ARM Cortex-M3 core rated for up to 32 MHz operation, delivering 1.25 DMIPS/MHz (Dhrystone 2.1). Its maximum frequency is constrained by supply voltage and temperature: 32 MHz at 3.0–3.6 V and 24 MHz at 1.65–1.8 V, per dynamic voltage scaling specifications in the datasheet.

Does the STM32L152V8T6TR support USB without an external crystal?

Yes. The device integrates a USB 2.0 full-speed PHY with an internal 48 MHz PLL that locks to the HSE or MSI clock source, eliminating the need for an external 48 MHz crystal. This reduces BOM cost and PCB footprint while maintaining USB compliance per USB-IF test requirements.

How many I/O pins are 5V tolerant, and what is their functional scope?

73 of the 83 general-purpose I/O pins are 5V tolerant, covering all GPIO ports except those assigned to USB (PA11/PA12), oscillator inputs (PH0/PH1), and certain analog inputs. These pins support all standard alternate functions including USART, SPI, I²C, timer PWM, and LCD segment driving - enabling direct interfacing with 5V logic without level shifters.

What distinguishes the STM32L152V8T6TR from the STM32L151V8T6TR?

The STM32L152V8T6TR includes an integrated LCD controller supporting up to 8×40 segments with on-board step-up converter and contrast control, while the STM32L151V8T6TR omits this peripheral entirely. Both share identical Flash/RAM/EEPROM sizes, power specs, and core peripherals - making LCD capability the primary differentiator.