STMicroelectronics STM32L151V8H6A

Overview

STM32L151V8H6A from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 128 KB Flash, 32 KB SRAM, 4 KB EEPROM with ECC, 12-bit ADC (1 Msps, 24 channels), and dual 12-bit DACs - deployed in battery-powered industrial sensors and portable medical devices requiring sub-µA standby operation.

For engineers reviewing the STM32L151V8H6A datasheet, STM32L151V8H6A pinout, STM32L151V8H6A application, or STM32L151V8H6A equivalent, key selection criteria include verified ultra-low-power mode current (0.28 µA Standby), USB 2.0 interface with internal 48 MHz PLL, LCD driver exclusion (confirmed for -V8 variant), and LQFP100 package compatibility with 83 fast I/Os (73 5V-tolerant).

Technical Context

The STM32L151V8H6A integrates a Cortex-M3 core running up to 32 MHz with MPU, supported by multiple clock sources: 1–24 MHz HSE, 32 kHz LSE for RTC, 16 MHz HSI (±1%), and multispeed MSI (65 kHz–4.2 MHz). Its power architecture enables dynamic voltage scaling across five low-power modes, including Stop mode with 0.44 µA consumption and <8 µs wakeup.

Analog subsystem includes two ultra-low-power comparators with window mode and wake-up capability, temperature sensor, VREFINT reference, and dedicated ADC/DAC peripherals operating down to 1.8 V supply - all coordinated via 7-channel DMA and programmable voltage detector (PVD) for autonomous power-event response.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad - suitable for high-density PCB layouts requiring thermal management and mechanical robustness in industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L151V8H6A, STM32L431RCY6TR trades EEPROM and ultra-low standby for enhanced compute and DSP capability, while EFM32PG12B500F1024GL125 sacrifices USB and analog integration for deeper sleep and energy-harvesting readiness - making STM32L151V8H6A optimal for USB-connected, EEPROM-dependent, battery-limited applications.

Availability

STM32L151V8H6A is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, wireless sensor nodes, and industrial valve controllers requiring stable component supply across long product lifecycles.

Supply support for STM32L151V8H6A 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, MEMS, and automotive semiconductors since 1987.

The STM32L1 series targets ultra-low-power embedded applications - specifically engineered for battery-operated devices demanding multi-year runtime, robust analog integration, and secure firmware execution in harsh environments.

FAQ

Does STM32L151V8H6A include an integrated LCD controller?

No. The STM32L151V8H6A explicitly excludes the LCD driver, as confirmed in Section 2.1 and Table 1 of the official datasheet (DocID024330 Rev 5). Only STM32L152x6/8/B-A variants include the 8×40-segment LCD controller. This omission reduces die size and power consumption for applications not requiring direct segment driving.

What is the maximum operating temperature range for STM32L151V8H6A?

The STM32L151V8H6A is rated for operation from –40°C to +105°C ambient temperature, validated per JEDEC JESD22-A104 and specified in Section 6.3.1 of the datasheet. This extended range supports deployment in automotive under-hood modules, industrial PLCs, and outdoor metering equipment.

Can STM32L151V8H6A operate from a single 1.8 V supply?

Yes. The device supports 1.65 V to 3.6 V supply voltage, and its analog peripherals (ADC, DAC, comparators) function down to 1.8 V, as documented in Table 3 ("Functionalities depending on the operating power supply range") and Section 6.3.1. This enables direct interface with 1.8 V logic and low-voltage sensors without level-shifting.

Is the 4 KB EEPROM in STM32L151V8H6A implemented as true EEPROM or emulated in Flash?

It is true hardware EEPROM with ECC, physically separate from Flash memory and independently erasable (100k write/erase cycles, 20-year data retention at 55°C), as defined in Section 3.7 and Table 36 of the datasheet. This eliminates wear-leveling firmware overhead and guarantees deterministic write latency for critical configuration storage.