STMicroelectronics STM32C011F4U6TR

Overview

STM32C011F4U6TR from STMicroelectronics is an Arm® Cortex®-M0+ 32-bit microcontroller with 32 KB flash, 6 KB SRAM, dual USARTs, 12-bit ADC (0.4 µs conversion), and operation from 2.0–3.6 V. It integrates a 48 MHz internal RC oscillator (±1 %), programmable brownout reset, and 18 5 V-tolerant I/Os-designed for compact industrial sensor nodes requiring low-power connectivity and secure firmware execution.

For engineers reviewing the STM32C011F4U6TR datasheet, STM32C011F4U6TR pinout, STM32C011F4U6TR application, or STM32C011F4U6TR equivalent, key selection criteria include its UFQFPN20 package footprint, 48 MHz max CPU frequency, 125°C extended temperature rating, integrated CRC unit, and SESIP3/PSA Level 3 security certification for firmware integrity in resource-constrained edge devices.

Technical Context

The STM32C011F4U6TR implements a single-core Arm Cortex-M0+ with MPU, supporting TrustZone-like memory protection via securable flash area and hardware parity on SRAM. Its clock system combines internal 48 MHz HSI48 (±1 %) and 32 kHz LSI (±5 %) oscillators with external 4–48 MHz HSE and 32.768 kHz LSE options, enabling precise RTC calibration and fast wake-up from Stop mode.

Peripheral interconnect uses a dedicated AHB/APB matrix supporting concurrent DMA transfers across three channels, with flexible mapping to timers, ADC, and communication interfaces-including two USARTs (one with ISO7816/LIN/IrDA), one I²C (Fast-mode Plus, 1 Mbit/s), and one SPI (24 Mbit/s, multiplexed with I²S).

Key Specifications

Pinout & Package

STM32C011F4U6TR is housed in a 3 mm × 3 mm UFQFPN20 package (A0A5), with 0.5 mm pitch, exposed thermal pad, and RoHS-compliant ECOPACK2 finish. This compact, surface-mount package supports high-density PCB layouts and efficient thermal dissipation in space-constrained applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32C011J4M6TR, the STM32C011F4U6TR offers 18 GPIOs and integrated ADC for sensor integration; versus STM32G031F8P6, it trades USB and memory headroom for lower cost and certified security targeting constrained industrial endpoints.

Availability

STM32C011F4U6TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart actuator control modules, energy-harvesting IoT endpoints, and automotive body controllers requiring stable component supply across long-lifecycle production programs.

Supply support for STM32C011F4U6TR 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 analog products for industrial, automotive, and consumer markets.

The STM32C0 series targets cost-sensitive, space-constrained embedded applications requiring robust security, ultra-low-power operation, and seamless integration of analog and digital peripherals in a single chip.

FAQ

What is the maximum operating frequency and core architecture of the STM32C011F4U6TR?

The STM32C011F4U6TR features an Arm Cortex-M0+ core rated for up to 48 MHz operation. It includes a Memory Protection Unit (MPU), hardware divide instruction, and single-cycle I/O access. The core achieves 42.2 CoreMark/MHz and supports Thumb-2 instruction set for efficient code density and real-time responsiveness in deterministic control loops.

Does the STM32C011F4U6TR support hardware encryption or secure firmware update?

No, the STM32C011F4U6TR does not integrate AES or hash accelerators. However, it provides SESIP3 and PSA Level 3 certification through hardware-enforced secure boot, flash readout protection (RDP), securable flash area, and debug interface lock-enabling trusted firmware loading and anti-tampering without cryptographic co-processors.

Can the STM32C011F4U6TR operate from a single 3.3 V supply with no external crystal?

Yes. The device can run entirely from its internal 48 MHz HSI48 oscillator (±1 % accuracy) and 32 kHz LSI (±5 %), eliminating need for external crystals. All peripherals-including USARTs, timers, and RTC-function with internal clocks, though external HSE/LSE are required for precise baud rate generation or calendar RTC accuracy.

What are the thermal limitations and package-specific PCB layout requirements for the UFQFPN20 variant?

The UFQFPN20 package (3 × 3 mm) has a θ_JA of 120°C/W (JEDEC standard). Recommended layout includes a 2.5 × 2.5 mm thermal pad soldered to ≥4 internal ground planes via ≥6 vias (0.3 mm diameter), 10–12 mil trace width for VDD/VSS, and 0.2 mm clearance between pins. No thermal relief on thermal pad is permitted per ST's AN5053 guidelines.