STMicroelectronics STM32F411CEU6U

Overview

STM32F411CEU6U from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 100 MHz max CPU frequency, 512 KB Flash, 128 KB SRAM, and integrated USB OTG FS controller with on-chip PHY. It features a 12-bit 2.4 MSPS ADC (16 channels), 11 timers including six 16-bit and two 32-bit units, and supports BAM (Batch Acquisition Mode) for low-power sensor hub applications in portable medical devices.

For engineers reviewing the STM32F411CEU6U datasheet, STM32F411CEU6U pinout, STM32F411CEU6U application, or STM32F411CEU6U equivalent, this MCU delivers deterministic real-time performance with ART Accelerator enabling zero-wait-state execution from Flash, adaptive power management across -40°C to 105°C, and full peripheral flexibility for industrial control and audio-class I2S audio processing.

Technical Context

The STM32F411CEU6U implements an Arm Cortex-M4 core with hardware FPU and Memory Protection Unit (MPU), executing at up to 100 MHz with 125 DMIPS performance. Its Adaptive Real-Time (ART) Accelerator uses prefetch and branch cache to eliminate Flash wait states, while Batch Acquisition Mode (BAM) enables autonomous peripheral data capture during CPU sleep.

It integrates dual PLLs - main PLL for system clock and dedicated PLLI2S for audio-grade I2S synchronization - alongside a 32 kHz RTC oscillator with calibration, 1.7–3.6 V supply range, and 77 5 V-tolerant I/Os. The device supports USB OTG FS host/device operation without external PHY and includes CRC calculation unit and 96-bit unique ID.

Key Specifications

Pinout & Package

STM32F411CEU6U is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin functions are validated per ST's DS10314 Rev 8, Section 4 ("Pinouts and pin description").

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F401CEU6, the STM32F411CEU6U adds BAM, PLLI2S, and higher Flash/SRAM - making it superior for audio and battery-constrained sensing. Versus STM32F412CEU6, it omits crypto blocks but reduces BOM cost by ~12% where security is not mandated.

Availability

STM32F411CEU6U is available at Aetrix Electronics and suitable for industrial PLCs, portable medical monitors, home audio DAC controllers, and smart HVAC panels requiring stable component supply across extended temperature ranges (-40°C to 105°C).

Supply support for STM32F411CEU6U 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, and MEMS sensors for industrial, automotive, and consumer markets.

The STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and energy efficiency - with the F411 line specifically optimized for cost-sensitive, battery-aware systems needing USB and audio interfaces.

FAQ

Does STM32F411CEU6U support USB device mode without external components?

Yes. It integrates a full-speed USB 2.0 OTG transceiver with on-chip PHY and programmable pull-up resistor on PA12. Only a single 1.5 kΩ pull-up to 3.3 V is required for device enumeration - no external transceiver or termination resistors needed.

What is the minimum VDD required for 100 MHz operation?

The device requires ≥2.7 V VDD to operate at 100 MHz across the full -40°C to 105°C temperature range, per Section 6.3.1 of DS10314 Rev 8. At 1.7 V, maximum frequency is limited to 60 MHz to maintain timing margins.

Can the 12-bit ADC achieve 2.4 MSPS with all 16 channels simultaneously?

No. The 2.4 MSPS rate applies to single-channel sampling. With 16 channels scanned via sequencer, effective throughput drops to 150 kSPS per channel due to acquisition time and conversion overhead - verified in Table 6.3.20 of the datasheet.

Is the UFQFPN48 package of STM32F411CEU6U compatible with reflow soldering per J-STD-020?

Yes. ST specifies the UFQFPN48 (A0B9) package for standard Pb-free reflow per J-STD-020D, with peak temperature of 260°C for ≤30 seconds. Moisture sensitivity level is MSL3, requiring bake if exposed >168 hours at >30°C/60% RH before assembly.