STMicroelectronics STM32F411CEY6TR

Overview

STM32F411CEY6TR 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. It integrates a 12-bit 2.4 MSPS ADC, 11 timers (including two 32-bit), and up to 13 communication interfaces including 3×I²C, 3×USART, 5×SPI/I²S, SDIO, and USB OTG FS - deployed in motor control, sensor hub, and industrial PLC applications.

For engineers reviewing the STM32F411CEY6TR datasheet, STM32F411CEY6TR pinout, STM32F411CEY6TR application, or STM32F411CEY6TR equivalent, key selection criteria include Flash/SRAM capacity, USB OTG FS support, low-power stop mode current (9 µA), 100 MHz real-time performance with ART Accelerator, and WLCSP49 package suitability for space-constrained embedded designs.

Technical Context

The device implements an adaptive real-time memory accelerator (ART Accelerator) enabling zero-wait-state execution from Flash at 100 MHz. Its power architecture supports dynamic efficiency line operation across 1.7–3.6 V with Batch Acquisition Mode (BAM) for sensor data burst capture.

It features dual clock domains: high-speed (up to 100 MHz via PLL) for CPU/peripherals and low-power (32 kHz LSE/LSI) for RTC and standby wake-up. The embedded 12-bit ADC operates at 2.4 MSPS with up to 16 channels and hardware oversampling support.

Key Specifications

Pinout & Package

STM32F411CEY6TR is housed in a 49-ball WLCSP (Wafer-Level Chip Scale Package) with 0.4 mm pitch, optimized for minimal PCB area and thermal performance in high-density layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F411CEY6TR, STM32F401CEU6 trades USB OTG and SRAM for lower cost, while STM32F412CEU6 adds crypto and memory headroom at similar footprint - making the F411CEY6TR optimal for balanced USB-enabled real-time control without security overhead.

Availability

STM32F411CEY6TR is available at Aetrix Electronics and suitable for motor control systems, sensor hub nodes, industrial PLC I/O modules, and portable medical monitors requiring stable component supply and long-term production continuity.

Supply support for STM32F411CEY6TR 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 STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and energy efficiency - with the F411 variant optimized for cost-sensitive, space-constrained designs needing USB OTG and robust analog integration.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F411CEY6TR achieves 100 MHz CPU frequency using its main PLL driven by the internal 16 MHz RC or external 4–26 MHz crystal. The ART Accelerator ensures zero-wait-state execution from Flash memory, eliminating performance penalties from instruction fetch latency. This configuration delivers consistent 125 DMIPS performance without requiring external memory or clock synthesis components.

Does this MCU support USB device, host, and OTG modes simultaneously?

Yes - the integrated USB 2.0 Full-Speed OTG controller with on-chip PHY supports device, host, and dual-role OTG operation. Hardware-level session request protocol (SRP) and host negotiation protocol (HNP) enable automatic role switching. No external transceiver or USB switch IC is required, reducing BOM count and PCB complexity in portable or docking-capable designs.

How does the WLCSP49 package impact thermal and layout design?

The WLCSP49 (2.999 × 3.185 mm) uses silicon die bonding directly to PCB pads, offering superior thermal resistance (θ_JA ≈ 120°C/W) versus QFP/BGA alternatives. Layout requires strict adherence to ST's AN4877: 0.4 mm pitch demands controlled-depth solder paste, 8-mil traces, and thermal vias under the VCAP and VSS balls. No external heatsink is needed below 85°C ambient at full load.

Can the 12-bit ADC operate at full speed while the CPU is in Stop mode?

Yes - via Batch Acquisition Mode (BAM), the ADC and DMA can autonomously sample and store data into SRAM while the CPU and most peripherals remain powered down. This mode uses the low-power 32 kHz LSE clock, achieving up to 2.4 MSPS with hardware averaging and trigger synchronization - enabling ultra-low-power sensor monitoring with wakeup only upon threshold violation or buffer full event.