STMicroelectronics STM32F411CEY3TR

Overview

STM32F411CEY3TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 512 KB Flash, 128 KB SRAM, USB OTG FS controller, and 100 MHz max CPU frequency-designed for real-time motor control, sensor hub, and industrial HMI applications requiring low-power operation down to 9 µA in Deep Stop mode.

For engineers reviewing the STM32F411CEY3TR datasheet, STM32F411CEY3TR pinout, STM32F411CEY3TR application, or STM32F411CEY3TR equivalent, key selection criteria include ART Accelerator-enabled zero-wait-state flash execution, 12-bit 2.4 MSPS ADC with up to 16 channels, and integrated USB OTG FS PHY supporting device/host/OTG roles without external transceiver.

Technical Context

The STM32F411CEY3TR implements an Arm Cortex-M4 core with hardware FPU and DSP instructions, coupled with ST's Adaptive Real-Time (ART) Accelerator that eliminates flash wait states at 100 MHz. Its memory subsystem includes 512 KB of embedded Flash and 128 KB of SRAM, with MPU support for secure task isolation.

Power architecture integrates dynamic voltage scaling, multiple low-power modes (Run/Stop/Standby), and Batch Acquisition Mode (BAM) for ultra-low-power peripheral data capture. Clock system features dual oscillators (4–26 MHz HSE + 32 kHz LSE), internal 16 MHz RC, and dedicated audio PLL (PLLI2S) for I2S audio timing.

Key Specifications

Pinout & Package

STM32F411CEY3TR uses the WLCSP49 (2.999 × 3.185 mm) package with 49-ball array, optimized for space-constrained portable and wearable designs. Pin definitions follow ST's standard STM32F411xC/E pinout layout with shared alternate functions across GPIO banks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F401CEU6, the STM32F411CEY3TR adds USB OTG FS PHY and 32 KB more SRAM for buffer-intensive protocols; versus STM32F412CEU6, it trades crypto acceleration and extra memory for lower unit cost and proven qualification in high-volume industrial designs.

Availability

STM32F411CEY3TR is available at Aetrix Electronics and suitable for motor control systems, portable medical monitors, industrial HMI panels, and battery-powered sensor hubs requiring stable component supply across multi-year production cycles.

Supply support for STM32F411CEY3TR 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, specializing in microcontrollers, power management, MEMS, and automotive ICs.

The STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and energy efficiency - particularly in industrial automation, consumer electronics, and IoT edge nodes.

FAQ

What is the maximum operating temperature range for STM32F411CEY3TR?

The STM32F411CEY3TR is rated for operation from –40°C to +105°C ambient temperature. This extended range is validated per ST's production data (DS10314 Rev 8), making it suitable for industrial environments where enclosure temperatures exceed standard commercial limits.

Does STM32F411CEY3TR support external memory interfaces like FSMC or Quad-SPI?

No - the STM32F411CEY3TR does not include FSMC or Quad-SPI peripherals. It supports only internal Flash and SRAM, plus SDIO for external storage. For external parallel memory expansion, designers must select STM32F42x/F43x or higher-series MCUs with FSMC.

Can the internal 16 MHz RC oscillator be used as the system clock source?

Yes - the factory-trimmed 16 MHz internal RC oscillator (HSI) can serve as the system clock source. It achieves ±1% accuracy after trimming and supports all low-power modes except Stop with RTC active, enabling quick startup without external crystal.

Is the WLCSP49 package of STM32F411CEY3TR compatible with reflow soldering processes?

Yes - the WLCSP49 (A0ZV) package is qualified for standard Pb-free reflow soldering per JEDEC J-STD-020. Peak temperature must not exceed 260°C, and moisture sensitivity level (MSL) is 3, requiring bake-out if exposed to ambient >12 hours before assembly.