STMicroelectronics STM32U073MCT6

Overview

STM32U073MCT6 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, and integrated USB 2.0 full-speed crystal-less interface. It delivers 407 ULPMark™-CP and supports VBAT mode at 130 nA with RTC and 9 backup registers - ideal for battery-powered IoT sensors and portable medical devices.

For engineers reviewing the STM32U073MCT6 datasheet, STM32U073MCT6 pinout, STM32U073MCT6 application, or STM32U073MCT6 equivalent, key selection criteria include shutdown current (16 nA), Stop 2 mode power (695 nA without RTC), 12-bit ADC conversion time (0.4 µs), LCD driver capability (8×48 segments), and 69 GPIOs with 5 V tolerance.

Technical Context

The STM32U073MCT6 integrates an ART Accelerator enabling 0-wait-state execution from flash at 56 MHz, coupled with a 1-Kbyte instruction cache. Its power architecture uses dual regulators (MR/LPR) and supports six low-power modes - including Shutdown (16 nA), Standby (30 nA without RTC), and Stop 2 (695 nA) - with 4 µs wake-up latency from Stop.

It features independent analog supplies (VDDA, VDDUSB, VBAT), a 12-bit DAC with 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 across –40 °C to +125 °C ambient temperature.

Key Specifications

Pinout & Package

LQFP80 package (10 × 10 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32L073RZT6 and RA2E2L1A32FJH, the STM32U073MCT6 uniquely combines crystal-less USB, LCD driver, and <700 nA Stop 2 mode - making it optimal for compact, display-equipped, battery-powered endpoints requiring zero external timing components.

Availability

STM32U073MCT6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial wireless sensor nodes, and low-power smart home hubs requiring stable component supply across extended product lifecycles.

Supply support for STM32U073MCT6 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 analog products for industrial, automotive, and consumer markets.

The STM32U0 series targets ultra-low-power embedded applications demanding sub-1 µA shutdown, integrated analog, and secure connectivity - specifically optimized for battery-operated IoT endpoints with display or USB interface requirements.

FAQ

What is the maximum operating temperature range for STM32U073MCT6?

The STM32U073MCT6 is rated for ambient operation from –40 °C to +125 °C, with junction temperature up to +130 °C. This rating is validated per DS14548 Rev 2 and applies to all LQFP80 variants. Thermal derating is not required within this range when PCB layout follows ST's recommended copper pour and via guidelines for the exposed thermal pad.

Does STM32U073MCT6 support true random number generation?

Yes - it includes a hardware TRNG module certified as candidate for NIST SP 800-90B. The TRNG output passes FIPS 140-2 statistical tests and is accessible via the RCC->CR register and RNG peripheral. It feeds the secure boot engine and can be used directly by cryptographic libraries without software whitening.

How many GPIOs are available in the LQFP80 package, and which are 5 V-tolerant?

The STM32U073MCT6 in LQFP80 provides 69 GPIOs, of which 68 are 5 V-tolerant (all except PB12). This is confirmed in Table 1 of DS14548 Rev 2. Tolerance is maintained across full VDD range (1.71–3.6 V) and does not require external clamping diodes for 5 V logic interfacing.

Is the LCD controller capable of driving segment-based displays without external components?

Yes - the integrated LCD controller supports 8×48 or 4×52 segment configurations with an internal step-up converter, eliminating need for external voltage boosters. It operates from VDD (1.71–3.6 V) and supports static, 2/3/4-mux modes. Contrast is adjustable via software-controlled bias voltage, and frame frequency is programmable from 64 Hz to 128 Hz.