STMicroelectronics STM32F401RET6JTR

Overview

STM32F401RET6JTR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 84 MHz, featuring 512 KB Flash, 96 KB SRAM, one 12-bit 2.4 MSPS ADC, USB 2.0 FS OTG controller with on-chip PHY, and 81 GPIOs (78 fast I/Os, all 5 V-tolerant). It targets embedded control in industrial HMI, sensor hubs, and portable medical devices requiring real-time signal processing and low-power operation.

For engineers reviewing the STM32F401RET6JTR datasheet, STM32F401RET6JTR pinout, STM32F401RET6JTR application, or STM32F401RET6JTR equivalent, key selection factors include ART Accelerator-enabled zero-wait-state Flash execution, 10 µA Stop mode current (Deep Power Down), 5 V-tolerant I/Os for mixed-voltage system interfacing, and integrated USB OTG FS without external transceiver.

Technical Context

The device integrates an adaptive real-time accelerator (ART Accelerator) that enables deterministic 0-wait-state execution from Flash at 84 MHz, eliminating instruction cache penalties. Its memory protection unit (MPU) supports secure task isolation in RTOS environments, and the dual-clock domain architecture separates high-speed peripherals (APB2 @ 84 MHz) from low-speed ones (APB1 @ 42 MHz).

Core timing relies on a multi-source clock system: 4–26 MHz external crystal, 16 MHz factory-trimmed internal RC, and 32 kHz RTC oscillator with calibration. The USB OTG FS controller uses a dedicated 48 MHz clock derived from the main PLL, while audio-class I2S operation is supported via the separate PLLI2S with ±50 ppm accuracy.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad (ECOPACK2 compliant). Pin count and I/O mapping match STM32F401RE series; pin functions validated per ST's DS10086 Rev 5, 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 STM32F401RET6JTR, STM32F411RETx offers higher clock speed and DAC but requires external USB PHY, while STM32G431KBT6 delivers superior analog integration and PWM resolution at the expense of USB connectivity and memory size - making STM32F401RET6JTR optimal for USB-centric, battery-aware edge nodes with moderate compute demands.

Availability

STM32F401RET6JTR is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, smart energy meters, and IoT edge gateways requiring stable component supply, long-term lifecycle assurance, and ECOPACK2-compliant packaging.

Supply support for STM32F401RET6JTR 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, sensors, and automotive ICs with strong industrial and consumer market presence.

The STM32F4-series targets high-performance embedded applications demanding DSP capability, rich connectivity, and real-time responsiveness - designed specifically for industrial control, medical instrumentation, and audio-visual equipment.

FAQ

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

The STM32F401RET6JTR achieves 84 MHz maximum CPU frequency using its main PLL driven by either the 4–26 MHz HSE crystal or 16 MHz HSI RC oscillator. The ART Accelerator ensures zero-wait-state execution from Flash at this speed, verified under VDD = 2.7–3.6 V and ambient temperature −40 °C to +85 °C per DS10086 Rev 5, Section 6.3.1.

Does this MCU support USB device functionality without external components?

Yes - the STM32F401RET6JTR integrates a full-speed USB 2.0 OTG controller with on-chip PHY, enabling USB device mode (e.g., CDC, HID, MSC) using only the PA11/PA12 differential pair and standard USB connector. No external transceiver, termination resistors, or VBUS sensing circuitry is required for basic enumeration.

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

All 81 GPIOs are 5 V-tolerant, meaning they safely accept input signals up to 5.5 V regardless of VDD level (1.7–3.6 V). This eliminates level-shifting components when interfacing with legacy 5 V peripherals like RS-232 transceivers, industrial sensors, or older microcontrollers - reducing BOM cost and PCB area in mixed-voltage designs.

What low-power modes are available and what are their typical currents?

Four low-power modes are supported: Sleep (146 µA/MHz), Stop with Flash in Stop mode (42 µA typ.), Stop with Flash in Deep Power Down (10 µA typ.), and Standby (2.4 µA typ. at 25 °C, 1.7 V). Wake-up sources include EXTI lines, RTC alarm, and USB wakeup event - validated per electrical characteristics table in DS10086 Rev 5, Section 6.3.7.