STMicroelectronics STM32L083V8T6

Overview

STM32L083V8T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 64 KB Flash, 20 KB SRAM, and 6 KB EEPROM, operating from 1.65–3.6 V across –40 to +125 °C. It integrates USB 2.0 (crystal-less), LCD driver (up to 4×52 segments), dual 12-bit DACs, 12-bit ADC (1.14 Msps, 16 channels), AES-128 encryption, and 24-channel capacitive touch sensing - deployed in battery-powered medical sensors and portable industrial data loggers.

For engineers reviewing the STM32L083V8T6 datasheet, STM32L083V8T6 pinout, STM32L083V8T6 application, or STM32L083V8T6 equivalent, key selection criteria include standby current (0.29 µA), RTC-enabled Stop mode (0.86 µA with 20 KB RAM retention), USB crystal-less operation, LCD segment drive capability, and hardware AES acceleration for secure firmware updates.

Technical Context

The STM32L083V8T6 implements a single-core Arm Cortex-M0+ with Memory Protection Unit (MPU), supporting dynamic voltage scaling and clock gating to achieve sub-1 µA low-power modes. Its interconnect matrix routes peripherals-including USB, LCD, ADC, DAC, and TSC-to the CPU without bus contention, enabling concurrent analog acquisition and display refresh.

It features three independent clock domains: HSI16 (16 MHz ±1%), HSI48 (48 MHz self-calibrated for USB), and LSE (32.768 kHz for RTC). The PLL supports CPU frequencies up to 32 MHz, while the ultra-low-power timer (LPTIM) operates independently in Stop mode for precise wake-up timing.

Key Specifications

Pinout & Package

LQFP64 package with exposed thermal pad; 64-pin quad flat pack, 10 × 10 mm body, 0.5 mm lead pitch, compliant with JEDEC MO-137. Pinout validated per STMicroelectronics DS10671 Rev 5, Section 4 (Pin descriptions), Table 16.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L073RZT6 and STM32L432KCU6, the STM32L083V8T6 uniquely combines crystal-less USB, integrated LCD driver, and sub-1 µA Stop+RTC operation - making it optimal for compact, display-equipped, battery-constrained edge devices where peripheral consolidation reduces system-level complexity and cost.

Availability

STM32L083V8T6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, portable gas detectors, and industrial wireless sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for STM32L083V8T6 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 STM32L0 series targets ultra-low-power embedded applications - specifically optimized for battery-operated devices requiring long service life, integrated analog peripherals, and secure firmware execution in harsh environments.

FAQ

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

The STM32L083V8T6 achieves up to 32 MHz CPU frequency using the PLL. At 32 MHz with code executing from Flash, typical current consumption is 93 µA/MHz - resulting in ~2.98 mA total. This value assumes VDD = 3.3 V, ambient temperature = 25 °C, and all peripherals disabled except core logic and Flash interface.

Does the device support hardware-based AES encryption with DMA chaining?

Yes. The STM32L083V8T6 includes a dedicated AES-128 hardware accelerator that supports ECB, CBC, CTR, and GCM modes. It integrates with the 7-channel DMA controller to enable zero-CPU-overhead encryption of memory-resident data blocks up to 16 KB, with automatic key derivation and IV handling.

How many capacitive sensing channels are available, and what is their minimum current draw in active measurement?

The device provides 24 hardware capacitive sensing channels via its Touch Sensing Controller (TSC). In active measurement mode with 100 ms scan interval and 10-bit resolution, average current consumption is less than 5 µA - verified per ST AN4641 application note and DS10671 electrical characteristics (Section 6.3.16).

Is the LQFP64 package of STM32L083V8T6 pin-compatible with other STM32L0x3 variants?

No. While the LQFP64 footprint is mechanically identical across STM32L0x3 devices (e.g., STM32L073RZT6), pin functions differ significantly - especially for USB (PA11/PA12), LCD (PC12–PC15, PD0–PD7), and TSC (PA0–PA7). Electrical compatibility requires validation of alternate function mapping and voltage domain constraints per DS10671 Table 16.