STMicroelectronics STM32U083MCT6

Overview

STM32U083MCT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller operating up to 56 MHz, featuring 256-Kbyte flash memory, 40-Kbyte SRAM with hardware parity, USB 2.0 full-speed crystal-less interface, and integrated LCD driver supporting 8×48 segments. It delivers 407 ULPMark™-CP and operates from 1.71 V to 3.6 V across -40 °C to 125 °C ambient temperature - deployed in battery-powered industrial sensors and portable medical monitors.

For engineers reviewing the STM32U083MCT6 datasheet, STM32U083MCT6 pinout, STM32U083MCT6 application, or STM32U083MCT6 equivalent, key selection criteria include verified shutdown current (16 nA), RTC retention in VBAT mode (130 nA), 12-bit ADC conversion time (0.4 µs), AES-128/256 hardware acceleration, and LQFP48 package compatibility with 48-pin footprint constraints.

Technical Context

The STM32U083MCT6 integrates an ART Accelerator enabling 0-wait-state execution from flash at 56 MHz, paired with a 1-Kbyte instruction cache and single-cycle multiplier for deterministic interrupt latency. Its power architecture uses dual regulators (MR/LPR) and supports six wake-up pins across Stop 2 (695 nA), Standby (30 nA without RTC), and Shutdown (16 nA) modes.

It embeds independent analog supplies (VDDA, VDDUSB, VBAT), a 12-bit DAC with low-power sample-and-hold, two rail-to-rail comparators, one operational amplifier with programmable gain (up to 16×), and 21 capacitive sensing channels - all validated for operation under 1.71–3.6 V supply with brownout reset (BOR) and programmable voltage detector (PVD).

Key Specifications

Pinout & Package

LQFP48 package with 48-pin quad flat lead frame, 0.5 mm pitch, exposed thermal pad, and ECOPACK2 environmental compliance. Pin functions validated per DS14463 Rev 2 (pages 42–51) and RM0503 reference manual.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M0+ microcontroller applications.

Compared with STM32L083RBT6 and STM32U575ZIT6, the STM32U083MCT6 uniquely balances sub-µA shutdown, crystal-less USB, and integrated LCD - making it the sole fit for compact, long-life, display-enabled edge nodes requiring certified security without over-spec'ing.

Availability

STM32U083MCT6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical monitors, industrial wireless sensor nodes, and low-power smart displays requiring stable component supply across extended product lifecycles.

Supply support for STM32U083MCT6 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 STM32U0 series targets ultra-low-power embedded applications demanding sub-µA shutdown, secure firmware execution, and integrated analog peripherals - optimized for battery-operated industrial, medical, and consumer IoT endpoints.

FAQ

What is the minimum supply voltage for reliable operation of the STM32U083MCT6?

The STM32U083MCT6 operates reliably from 1.71 V to 3.6 V on VDD. Below 1.71 V, brownout reset (BOR) activates at configurable thresholds; the internal LDO regulator maintains stable VCORE down to 1.71 V, and VDDA must be ≥1.62 V for ADC/COMP operation or ≥1.80 V for DAC/OPAMP use.

Does the STM32U083MCT6 support USB without an external crystal?

Yes - it integrates a crystal-less USB 2.0 full-speed PHY with Clock Recovery System (CRS), achieving ±0.25% timing accuracy using the internal 48 MHz HSI48 oscillator trimmed by the 32.768 kHz LSE. No external 12 MHz crystal or load capacitors are required for USB enumeration or data transfer.

How many GPIOs are available in the LQFP48 package of the STM32U083MCT6?

The STM32U083MCT6 in LQFP48 provides 39 general-purpose I/Os, of which 6 are designated as wake-up pins. All GPIOs are 5 V-tolerant when VDD is ≥2.0 V, and support multiple alternate functions including USART, I²C, SPI, and timer channels as defined in RM0503 Section 10.2.

Can the STM32U083MCT6 retain SRAM content during Standby mode?

Yes - SRAM2 (8 Kbytes) retains full content in Standby mode, powered by the low-power regulator (LPR). SRAM1 (32 Kbytes) is also retained, but only if the SRD bit in PWR_CR1 is cleared; otherwise, it is powered down to reduce leakage. Backup registers remain active via VBAT regardless of VDD state.