STMicroelectronics STM32F411RET7

Overview

STM32F411RET7 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, delivering 125 DMIPS at 100 MHz, featuring 512 KB Flash, 128 KB SRAM, USB OTG FS, and 13 communication interfaces. It integrates a 12-bit 2.4 MSPS ADC, 11 timers (including six 16-bit and two 32-bit), and supports BAM for low-power sensor hub applications in portable medical devices.

For engineers reviewing the STM32F411RET7 datasheet, STM32F411RET7 pinout, STM32F411RET7 application, or STM32F411RET7 equivalent, key selection criteria include its 100 MHz CPU frequency with ART Accelerator, 77 5 V-tolerant I/Os, -40°C to +105°C extended temperature grade, and ECOPACK2-compliant LQFP64 package - critical for industrial motor control and HVAC system design.

Technical Context

The STM32F411RET7 implements an adaptive real-time memory accelerator (ART Accelerator) enabling zero-wait-state execution from Flash at 100 MHz, paired with a memory protection unit (MPU) for secure embedded runtime partitioning. Its clock system includes dual oscillators: a 4–26 MHz external crystal and factory-trimmed 16 MHz internal RC, plus a calibrated 32 kHz RTC oscillator.

Power architecture supports dynamic efficiency via Batch Acquisition Mode (BAM), achieving 9 µA Stop mode (Deep power down) and 1.8 µA Standby (no RTC). The 12-bit ADC operates at 2.4 MSPS across up to 16 channels, while the USB OTG FS controller includes an on-chip PHY and supports device/host/OTG roles without external transceivers.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F401RET6, the STM32F411RET7 delivers 2× Flash/SRAM and ART-accelerated execution for deterministic real-time response; versus STM32F412RET6, it trades cryptographic acceleration for lower active power and simpler firmware integration - making it ideal for industrial control where security is handled externally.

Availability

STM32F411RET7 is available at Aetrix Electronics and suitable for industrial motor control, medical sensor hubs, smart HVAC systems, and programmable logic controller modules requiring stable component supply across multi-year production cycles.

Supply support for STM32F411RET7 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, specializing in microcontrollers, power management, and MEMS sensors with strong industrial and automotive focus.

The STM32F4 series targets high-performance embedded applications demanding real-time processing, rich connectivity, and robust operation across extended temperature ranges - particularly in factory automation and energy-efficient appliances.

FAQ

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

The STM32F411RET7 achieves 100 MHz CPU frequency using its adaptive real-time accelerator (ART Accelerator), which caches Flash read accesses to eliminate wait states. This requires enabling the prefetch buffer and instruction cache in the FLASH_ACR register; without ART, Flash access incurs wait states above 30 MHz, degrading effective performance.

Does this MCU support USB device mode without external components?

Yes - the STM32F411RET7 integrates a full-speed USB 2.0 transceiver (PHY) and supports device, host, and OTG modes natively. Only a single 1.5 kΩ pull-up resistor on USB_DP is required for device enumeration; no external PHY, level shifters, or termination resistors are needed for basic USB CDC or HID functionality.

How many I/O pins are 5 V tolerant and why does that matter?

77 GPIO pins are 5 V tolerant across all port banks (PA–PE), meaning they accept 5.5 V inputs even when VDD = 1.7–3.6 V. This eliminates external level-shifting circuitry when interfacing with legacy 5 V sensors, industrial I/O standards (e.g., 24 V PLC inputs via optocouplers), or RS-232 transceivers - reducing BOM cost and PCB complexity.

What low-power modes are available and what is the lowest achievable current?

The STM32F411RET7 supports Run, Sleep, Stop (two variants), and Standby modes. In Stop mode with Flash in Deep power down and regulators disabled, typical current drops to 9 µA at 25 °C - the lowest among its active modes. For always-on RTC + backup registers only, Standby draws 1.8 µA at 25 °C and 1.7 V, enabling multi-year battery operation in metering applications.