STMicroelectronics STM32F411RET6TR

Overview

STM32F411RET6TR 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. It delivers 125 DMIPS performance with ART Accelerator enabling zero-wait-state execution from flash, supports 1.7–3.6 V operation, and targets embedded control in industrial HMI, sensor hubs, and motor drive subsystems.

For engineers reviewing the STM32F411RET6TR datasheet, STM32F411RET6TR pinout, STM32F411RET6TR application, or STM32F411RET6TR equivalent, key selection criteria include its 100 MHz real-time capability, 12-bit 2.4 MSPS ADC with up to 16 channels, low-power Stop mode (9 µA), 77 5 V-tolerant I/Os, and full-speed USB OTG with on-chip PHY - all in an LQFP64 package.

Technical Context

This MCU integrates an adaptive real-time memory accelerator (ART) that eliminates flash wait states at 100 MHz, and Batch Acquisition Mode (BAM) for ultra-low-power peripheral data capture without waking the core. Its clock system includes dual oscillators (4–26 MHz HSE + 32 kHz LSE), internal 16 MHz RC, and dedicated audio PLL (PLLI2S) for high-fidelity I2S timing.

The device features a multi-AHB bus matrix supporting concurrent access to Flash, SRAM, and peripherals, plus a 16-stream DMA controller with FIFOs and burst support. Debug is enabled via SWD/JTAG with Embedded Trace Macrocell™, and security includes a 96-bit unique ID and memory protection unit (MPU).

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 STM32F411RET6TR offers superior real-time determinism (100 MHz + ART) and ultra-low-power acquisition (BAM), while STM32F412RET6 trades no performance loss for added security - making the RET6TR optimal for cost-sensitive, latency-critical embedded control where crypto is not mandatory.

Availability

STM32F411RET6TR is available at Aetrix Electronics and suitable for industrial PLCs, wearable sensor hubs, home audio controllers, and BLDC motor drives requiring stable component supply across long production lifecycles.

Supply support for STM32F411RET6TR 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F4 series targets high-performance embedded applications demanding real-time processing, rich connectivity, and deterministic low-power operation - with the F411 line optimized for cost-effective Cortex-M4 solutions in space-constrained designs.

FAQ

What is the maximum operating temperature range for STM32F411RET6TR?

The STM32F411RET6TR is rated for industrial temperature range: –40°C to +85°C. This is confirmed in DS10314 Rev 8 Section 3.14 and Table 14 (General Operating Conditions). The part does not support extended 105°C or 125°C grades - those apply only to specific variants like STM32F411VE (LQFP100) marked "-1" or "-2".

Does STM32F411RET6TR support USB device-only mode without external components?

Yes. The part integrates a full-speed USB 2.0 OTG PHY with internal transceiver, requiring only standard USB termination (1.5 kΩ pull-up on USB_DP for device mode) and no external PHY or level shifters. This is documented in Section 3.27 and Figure 14 of DS10314 Rev 8.

How many ADC channels can be sampled simultaneously in interleaved mode?

The STM32F411RET6TR has one 12-bit ADC with up to 16 external input channels. It supports hardware-triggered regular channel sequencing but does not implement true simultaneous sampling across multiple channels - no dual ADC or interleaved mode is available. All conversions are sequential within a single ADC instance.

Is the internal 16 MHz RC oscillator factory-trimmed and usable for USB clock generation?

The internal 16 MHz RC (HSI) is factory-trimmed to ±1% accuracy at 25°C, but it is not suitable for USB clock generation. USB FS requires 0.25% tolerance; only the PLL-driven clock derived from HSE (4–26 MHz crystal) or PLLI2S meets this spec. This is specified in Section 6.3.9 and Table 39 of DS10314 Rev 8.