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STMicroelectronics STM32F401RET6TR
- Part No.:
- STM32F401RET6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F401RET6TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,645
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Product details
Overview
STM32F401RET6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 84 MHz, featuring 512 KB Flash, 96 KB SRAM, and integrated USB OTG FS controller, ADC (12-bit, 2.4 MSPS), and 11 communication interfaces - used in industrial HMI, sensor fusion nodes, and portable medical devices.
For engineers reviewing the STM32F401RET6TR datasheet, STM32F401RET6TR pinout, STM32F401RET6TR application, or STM32F401RET6TR equivalent, key selection criteria include Flash/SRAM capacity, USB OTG FS support, 5 V-tolerant I/O count (up to 78), low-power Stop mode current (10 µA), and LQFP64 package compatibility with legacy STM32F4 designs.
Technical Context
The device implements an adaptive real-time accelerator (ART Accelerator) enabling zero-wait-state execution from Flash at 84 MHz, paired with a memory protection unit (MPU) and DSP instruction set. It integrates dual PLLs - main PLL for CPU/system clock and dedicated audio PLL (PLLI2S) for I2S timing - supporting synchronous audio streaming without external clock sources.
Clock architecture includes four oscillators: 4–26 MHz HSE crystal, 16 MHz factory-trimmed HSI RC, 32 kHz LSE for RTC calendar, and 32 kHz LSI RC - all configurable via RCC registers. Power management supports five low-power modes (Sleep, Stop with Flash retention, Stop with Deep power down, Standby, VBAT), with wake-up times as low as 5 µs from Sleep and sub-100 µs from Stop modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 105 DMIPS @ 84 MHz - enables real-time signal processing and floating-point math in motor control or audio algorithms. |
| Memory | 512 KB Flash + 96 KB SRAM - sufficient for complex firmware with bootloader, OTA update partition, and real-time buffers. |
| ADC | 12-bit, 2.4 MSPS, 16-channel - supports high-speed analog sensing (e.g., multi-axis IMU data acquisition) with hardware oversampling. |
| USB Interface | USB 2.0 full-speed OTG with on-chip PHY - allows direct host/device/OTG operation without external transceiver, reducing BOM cost and PCB area. |
| I/O Voltage | 5 V-tolerant on all 78 fast I/Os - simplifies interface to legacy 5 V peripherals (e.g., RS-232 level shifters, industrial sensors) without external logic. |
| Low-Power Stop Mode | 10 µA typical @ 25 °C (Flash in Deep power down) - extends battery life in always-on sensor nodes requiring periodic wake-up and measurement. |
| Clock Sources | 4–26 MHz HSE, 16 MHz HSI, 32 kHz LSE/LSE - provides precise RTC timekeeping and robust system startup across temperature and voltage ranges. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK2 construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Core and I/O domain supply pins; requires local 100 nF + 4.7 µF decoupling per VDD pair near package corner. |
| VCAP_1, VCAP_2 | Internal regulator bypass | Must connect 2.2 µF ceramic capacitors to ground; failure causes unstable core voltage and boot failure. |
| NRST | Active-low reset input | Asynchronous reset pin with internal pull-up; accepts 1–10 ms pulse for reliable system recovery. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | All 78 fast I/Os support 42 MHz toggle rate and 5 V tolerance - usable directly with TTL/CMOS 5 V logic. |
| PA9/PA10 | USART1 TX/RX | Dedicated pins for primary debug UART; support LIN and IrDA protocols without external components. |
| PA11/PA12 | USB DP/DM | Differential USB 2.0 full-speed signals with integrated transceiver - no external resistors or ESD diodes required. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables 0-wait-state Flash execution at 84 MHz - eliminates performance penalty of embedded Flash vs. external memory. |
| USB OTG FS | On-chip PHY with integrated termination - reduces component count by 6+ parts (resistors, ESD diodes, magnetics) versus discrete USB solutions. |
| RTC with Calendar | Hardware subsecond accuracy and calendar engine - maintains date/time across Standby mode using VBAT, eliminating need for external RTC IC. |
| DMA Controller | 16-stream DMA with FIFO and burst support - offloads CPU during ADC sampling, SPI transfers, or memory-to-memory moves, improving real-time determinism. |
| Temperature Sensor | Calibrated internal sensor (±1.5 °C accuracy) - enables board-level thermal monitoring without external thermistor or I²C sensor. |
Applications
| Industrial HMI Panel | Portable ECG Monitor |
|---|---|
Use Scenario: Touch-enabled display with real-time waveform rendering and local data logging. IC Role / Device Role / Timing Role: Main application processor handling GUI rendering, sensor data aggregation, and USB mass storage for report export. Use Value: 512 KB Flash stores embedded graphics library and patient data buffer; USB OTG FS enables direct flash drive export without PC intermediary. | Use Scenario: Battery-powered wearable capturing 3-lead ECG at 1 kSPS with Bluetooth LE gateway handoff. IC Role / Device Role / Timing Role: Signal acquisition controller managing ADC oversampling, digital filtering, and low-latency BLE packet prep. Use Value: 12-bit ADC with hardware oversampling achieves >14 ENOB; 10 µA Stop mode extends 7-day battery life between charges. |
| Smart Building Sensor Node | Motor Control Starter Kit |
Use Scenario: Wireless CO₂/temperature/humidity node with LoRaWAN backhaul and local alarm triggering. IC Role / Device Role / Timing Role: Central sensor hub aggregating I²C sensor data, running Kalman filter fusion, and scheduling LoRa transmissions. Use Value: 3× I²C + 3× USART + 4× SPI interfaces allow concurrent connection to 8+ sensors; 96 KB SRAM holds fusion state and packet queue. | Use Scenario: 3-phase BLDC evaluation board with hall-effect feedback, PWM generation, and overcurrent protection. IC Role / Device Role / Timing Role: Motion controller generating six complementary PWM outputs with dead-time insertion and fault shutdown. Use Value: Six 16-bit timers with quadrature encoder input and hardware break inputs enable precise commutation timing and safe torque limiting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F405RGT6 | Higher Flash (1 MB), adds Crypto/hash processor and Camera interface; same LQFP64 package and pinout. | Required for secure firmware signing or image capture - not needed for basic control or connectivity tasks. | Select when cryptographic acceleration or parallel camera input is mandatory; otherwise over-specified and higher cost. |
| STM32F072RBT6 | Cortex-M0 core, 128 KB Flash, no FPU, USB 2.0 FS only (no OTG), lower max frequency (48 MHz). | Suitable for cost-sensitive, non-DSP applications like simple USB HID devices or basic sensor nodes. | Choose for ultra-low-cost entry-level designs where floating-point math or high-speed ADC is unnecessary. |
Compared with STM32F405RGT6, STM32F401RET6TR offers optimal balance of performance, peripheral count, and cost for mid-tier embedded applications; versus STM32F072RBT6, it delivers 2.2× DMIPS, full DSP capability, and richer connectivity - justifying its use where real-time signal processing or USB device/host flexibility is required.
Availability
STM32F401RET6TR is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, smart building sensor nodes, and motor control starter kits requiring stable component supply and long-term production support.
Supply support for STM32F401RET6TR 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, MEMS, and automotive semiconductors since 1987.
The STM32F4 series targets high-performance embedded applications demanding DSP capability, rich connectivity, and deterministic real-time response - especially in industrial automation, medical instrumentation, and consumer audio.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F401RET6TR achieves 84 MHz maximum CPU frequency using its main PLL driven by the 4–26 MHz HSE crystal or 16 MHz HSI RC oscillator. The ART Accelerator enables zero-wait-state execution from Flash at this speed, verified across voltage (1.7–3.6 V) and temperature (–40 to +85 °C) ranges per DS10086 Rev 5 Section 6.3.10.
Does this MCU support USB device, host, and OTG functionality simultaneously?
No - the USB 2.0 full-speed peripheral supports device, host, or OTG operation, but only one mode active at a time. Mode selection is configured via the USB_OTG_GUSBCFG register and requires appropriate software stack (e.g., STM32Cube USB Device Library for device mode, Host Library for host mode). Hardware does not permit concurrent device/host enumeration.
How many I/O pins are 5 V-tolerant and what is the implication for system design?
All 78 fast I/Os (PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PH0–PH1) are 5 V-tolerant. This allows direct interfacing with 5 V logic families (e.g., TTL, CMOS, RS-232 drivers) without level shifters, reducing BOM cost and layout complexity - critical for industrial systems integrating legacy peripherals.
What is the minimum supply current in Standby mode and under what conditions?
Standby mode current is 2.4 µA at 25 °C and 1.7 V (no RTC), rising to 12 µA at 85 °C and 1.7 V. This assumes VBAT disconnected, all regulators disabled, and backup SRAM powered off. RTC operation increases current to ~1 µA (VBAT domain only), per DS10086 Rev 5 Section 3.17 and Table 29–30.
STM32F401RET6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 84MHz
- Connectivity:
- I2C, IrDA, LINbus, SDIO, SPI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 50
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 96K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 3.6V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F401RET6TR FAQ
1.How can I place an order for STM32F401RET6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F401RET6TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F401RET6TR reliable?
The price and inventory of STM32F401RET6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F401RET6TR is usually 5 days.
3.What payment methods are accepted for STM32F401RET6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F401RET6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F401RET6TR?
STM32F401RET6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F401RET6TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F401RET6TR?
For technical support, including STM32F401RET6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F401RET6TR requirements.
6.How does Aetrix verify that STM32F401RET6TR is sourced from the original manufacturer or authorized distributors?
All STM32F401RET6TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F401RET6TR meets industry standards.
7.What is the process for return or replacement of STM32F401RET6TR?
All STM32F401RET6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F401RET6TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F401RET6TR part is unused and in its original packaging.
Return procedure for STM32F401RET6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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