STMicroelectronics STM32U083CCU6

Overview

STM32U083CCU6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller operating up to 56 MHz, featuring 256-Kbyte flash, 40-Kbyte SRAM with hardware parity, USB 2.0 full-speed crystal-less interface, LCD controller (8×48/4×52 segments), and AES-128/256 hardware encryption. It targets battery-powered industrial sensors, portable medical devices, and smart utility meters requiring sub-30 nA standby current and robust security.

For engineers reviewing the STM32U083CCU6 datasheet, STM32U083CCU6 pinout, STM32U083CCU6 application, or STM32U083CCU6 equivalent, key selection criteria include verified VBAT-mode RTC retention at 130 nA, 69 GPIOs (5 V-tolerant), 12-bit ADC with 0.4 µs conversion, and ECOPACK2-compliant UFQFPN48 (7 × 7 mm) package compatibility.

Technical Context

The STM32U083CCU6 integrates an ART Accelerator enabling 0-wait-state execution from flash at 56 MHz, paired with a 1-Kbyte instruction cache. Its power architecture uses dual regulators (MR/LPR) and supports six low-power modes-including Shutdown (16 nA), Stop 2 (695 nA without RTC), and VBAT mode (130 nA)-with six wake-up pins and 4 µs wake-up latency from Stop.

It embeds 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. Security includes PSA Level 1 and SESIP Level 3 candidate certification, 96-bit unique ID, five passive anti-tamper pins, and hardware RNG compliant with NIST SP 800-90B.

Key Specifications

Pinout & Package

UFQFPN48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified. Pinout validated per DS14463 Rev 2 (pages 42–45) and STMicroelectronics UM2917 reference layout.

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 EFM32PG12B500F1024GL125, the STM32U083CCU6 uniquely combines sub-1 µA Stop 2 operation, crystal-less USB, integrated LCD driver, and PSA-certifiable security - making it the sole fit for compact, long-life, display-equipped, and secure edge nodes.

Availability

STM32U083CCU6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, and industrial wireless sensor nodes requiring stable component supply, long-term lifecycle assurance, and ECOPACK2-compliant packaging.

Supply support for STM32U083CCU6 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, security-critical edge applications - delivering best-in-class energy efficiency (ULPMark™-CP 407) while integrating USB, LCD, and cryptographic accelerators into a single die for compact, battery-operated IoT endpoints.

FAQ

What is the maximum operating temperature range for STM32U083CCU6?

The STM32U083CCU6 operates across ambient temperatures from –40 °C to +125 °C, with junction temperature rated up to +130 °C. This extended range is validated per DS14463 Rev 2 and supports deployment in harsh environments such as industrial enclosures, automotive under-hood modules, and outdoor utility infrastructure without derating.

Does STM32U083CCU6 support crystal-less USB operation?

Yes, STM32U083CCU6 integrates a full-speed USB 2.0 device PHY with built-in clock recovery, eliminating the need for an external 48 MHz crystal. This reduces BOM cost and PCB area while maintaining ±0.25% timing accuracy - confirmed in Section 2.2 of DS14463 and validated in ST's AN5027 application note.

How many GPIOs are available in the UFQFPN48 package?

The STM32U083CCU6 in UFQFPN48 provides 48 pins total, with 39 GPIOs (including 6 dedicated wake-up pins). This matches Table 1 in DS14463 Rev 2, where STM32U083CC variant specifies "39 GPIOs" and "6 wake-up pins" - all accessible on this 48-pin footprint.

Is hardware parity checking enabled on both SRAM regions?

Yes, both SRAM1 (32 KB) and SRAM2 (8 KB) include hardware parity checking, as stated in Section 3.4.2 of DS14463 Rev 2. Parity errors trigger HardFault exceptions, allowing real-time detection and correction - a key requirement for IEC 61508 and ISO 26262 functional safety compliance.