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STMicroelectronics STM32F411RET6U
- Part No.:
- STM32F411RET6U
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F411RET6U.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,394
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Product details
Overview
STM32F411RET6U from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, delivering 125 DMIPS at 100 MHz, featuring 512 KB Flash, 128 KB SRAM, USB OTG FS controller with on-chip PHY, and 13 communication interfaces including 3×I²C, 3×USART, and 5×SPI/I²S. It targets embedded control in motor drives, medical equipment, and industrial PLCs.
For engineers reviewing the STM32F411RET6U datasheet, STM32F411RET6U pinout, STM32F411RET6U application, or STM32F411RET6U equivalent, key selection factors include its 100 MHz CPU frequency with ART Accelerator for zero-wait-state flash execution, 12-bit 2.4 MSPS ADC with up to 16 channels, low-power Stop mode down to 9 µA, and 77 5 V-tolerant I/Os in LQFP64 package.
Technical Context
The device integrates an adaptive real-time accelerator (ART) enabling deterministic 0-wait-state execution from Flash memory, and supports Batch Acquisition Mode (BAM) for ultra-low-power sensor data capture. Its clock system includes dual oscillators (4–26 MHz HSE and 32 kHz LSE), internal 16 MHz RC, and dedicated audio PLL (PLLI2S) for high-fidelity I²S audio timing.
Power architecture features three low-power modes-Stop (with Flash in Deep power-down, 9 µA typical), Standby (1.8 µA at 25 °C), and Run (100 µA/MHz)-managed by a POR/PDR/PVD/BOR system and voltage regulator with VCAP_1/VCAP_2 decoupling. Debug uses Serial Wire Debug (SWD) and JTAG with Embedded Trace Macrocell™.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 100 MHz max frequency, 125 DMIPS performance |
| Memory | 512 KB Flash (programmable via SWD/JTAG), 128 KB SRAM (no wait states) |
| Analog | 1×12-bit ADC, 2.4 MSPS sampling rate, up to 16 external channels |
| Timers | Up to 11 timers: six 16-bit, two 32-bit (100 MHz), two watchdogs, SysTick |
| Communication | 3×I²C (SMBus/PMBus), 3×USART (up to 12.5 Mbit/s), 5×SPI/I²S (50 Mbit/s), SDIO, USB OTG FS |
| Power | 1.7–3.6 V supply; Run: 100 µA/MHz; Stop (Deep PD): 9 µA typical; Standby: 1.8 µA (no RTC) |
| I/O | Up to 81 GPIOs; 78 fast I/Os (100 MHz), 77 5 V-tolerant pins |
Pinout & Package
STM32F411RET6U is housed in a 64-pin LQFP package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin functions are defined per STM32F411xC/E datasheet Section 4 (Pinouts and pin description), with dedicated VDD/VSS, VCAP_1/VCAP_2, NRST, BOOT0, and multi-function AFIO mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDUSB | Supply rails | VDD (digital core), VDDA (analog domain), VDDUSB (USB PHY); require separate 100 nF + 4.7 µF decoupling |
| VCAP_1 / VCAP_2 | Internal regulator bypass | Connect 2.2 µF ceramic capacitors to ground; mandatory for stable 1.2 V core voltage regulation |
| NRST | Active-low reset input | Asynchronous reset with Schmitt trigger; internal pull-up; supports external reset circuitry |
| BOOT0 | Boot mode selection | High at reset enables system memory bootloader; low selects main Flash memory |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Configurable as digital input/output, analog input, or 16+ alternate functions (e.g., USART2_TX on PA2) |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables zero-wait-state execution from Flash at 100 MHz, eliminating cache misses in deterministic real-time loops |
| Batch Acquisition Mode (BAM) | Allows autonomous peripheral-triggered ADC/DMA capture while CPU sleeps, reducing active time in sensor hub applications |
| USB OTG FS with PHY | Integrated full-speed transceiver eliminates need for external PHY; supports device/host/OTG roles with battery charging detection |
| 5 V-tolerant I/Os | 77 pins tolerate 5 V inputs regardless of VDD level (1.7–3.6 V), simplifying interface with legacy 5 V peripherals |
| Temperature range | -40°C to +105°C industrial grade operation, validated across full voltage (1.7–3.6 V) and clock range |
Applications
| Motor Drive Control | Medical Sensor Hub |
|---|---|
Use Scenario: Closed-loop BLDC motor control in HVAC blowers and industrial pumps using PWM-driven gate drivers. IC Role / Device Role / Timing Role: Main controller executing FOC algorithms, managing 6-channel complementary PWM outputs, ADC current sensing, and UART diagnostics. Use Value: 100 MHz Cortex-M4 with DSP instructions enables real-time vector math; 2.4 MSPS ADC captures current waveforms at 20 kHz switching frequency. | Use Scenario: Wearable vital sign monitor aggregating ECG, SpO₂, and motion data before wireless transmission. IC Role / Device Role / Timing Role: Central sensor fusion node running BAM-triggered ADC acquisition and low-power BLE co-processor interface via USART. Use Value: 9 µA Stop mode with RAM retention extends battery life; 77 5 V-tolerant I/Os interface directly with analog front-end ICs. |
| Industrial PLC I/O Module | Home Audio DAC Controller |
Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs/outputs and Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Protocol handler and GPIO manager, using USART1 (ISO 7816) for smart card emulation and SPI for isolated digital I/O expanders. Use Value: Three hardware USARTs support simultaneous Modbus, diagnostics, and firmware update; 81 GPIOs enable scalable I/O mapping. | Use Scenario: High-fidelity streaming audio receiver decoding SPDIF/I²S and driving stereo DACs in smart speakers. IC Role / Device Role / Timing Role: Audio transport controller synchronizing I²S master clock (via PLLI2S), buffering data via DMA, and managing USB audio class descriptors. Use Value: Dedicated audio PLL (PLLI2S) generates jitter-free 11.2896 MHz or 12.288 MHz I²S clocks; 50 Mbit/s SPI supports external flash for firmware/audio assets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F401RET6 | Same LQFP64 package, but 84 MHz max, 512 KB Flash, 96 KB SRAM, no USB OTG FS PHY, no audio PLL | Lacks integrated USB PHY and PLLI2S; unsuitable for USB host or high-accuracy audio clocking | Select when USB/device-only connectivity suffices and audio timing precision is not required |
| STM32F412RET6 | Same package, 100 MHz, 512 KB Flash, 256 KB SRAM, USB OTG FS PHY, added AES crypto engine and Chrom-ART accelerator | Higher SRAM and security features increase BOM cost; Chrom-ART benefits GUI rendering, not needed for pure control | Choose when cryptographic acceleration or larger SRAM for complex buffers is essential |
Compared with STM32F401RET6, STM32F411RET6U adds USB OTG FS with PHY and audio PLL for richer connectivity; versus STM32F412RET6, it trades 128 KB SRAM and crypto for lower cost and identical core/peripheral capability in non-security-critical control applications.
Availability
STM32F411RET6U is available at Aetrix Electronics and suitable for motor drive control, medical sensor hubs, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and ECOPACK2-compliant packaging.
Supply support for STM32F411RET6U 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 management ICs, sensors, and automotive semiconductors.
The STM32F4 series targets high-performance embedded applications demanding real-time processing, rich connectivity, and low-power operation-especially where DSP, USB, audio, or motor control functionality is central to system architecture.
FAQ
What is the maximum operating temperature for STM32F411RET6U?
The STM32F411RET6U is rated for industrial temperature range: –40°C to +105°C. This rating is validated across full supply voltage (1.7–3.6 V) and all clock configurations, including 100 MHz CPU operation and USB OTG FS activity. Thermal derating is not required within this range per datasheet Section 6.3.1.
Does STM32F411RET6U include an integrated USB PHY?
Yes, STM32F411RET6U integrates a full-speed USB 2.0 OTG PHY compliant with USB specification revision 2.0. It supports device, host, and OTG roles without external transceiver components. The PHY connects directly to USB D+/D– pins and includes battery charging detection circuitry per BC 1.2 standard.
How many 5 V-tolerant I/O pins does STM32F411RET6U have?
STM32F411RET6U provides 77 5 V-tolerant I/O pins across its LQFP64 package. These pins maintain 5 V tolerance regardless of VDD level (1.7–3.6 V), enabling direct interfacing with legacy 5 V logic, sensors, and communication transceivers without level shifters.
What debug interfaces are supported on STM32F411RET6U?
The device supports Serial Wire Debug (SWD) and JTAG interfaces via dedicated SWCLK/SWDIO and TCK/TMS/TDO/TDI/NRST pins. SWD is the recommended 2-pin interface for production programming and debugging; JTAG remains available for boundary-scan testing and multi-core debug scenarios.
STM32F411RET6U Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32F4
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 100MHz
- Connectivity:
- I2C, IrDA, LINbus, MMC/SD/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:
- 128K 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:
STM32F411RET6U FAQ
1.How can I place an order for STM32F411RET6U through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F411RET6U 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 STM32F411RET6U reliable?
The price and inventory of STM32F411RET6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F411RET6U is usually 5 days.
3.What payment methods are accepted for STM32F411RET6U?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F411RET6U transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F411RET6U?
STM32F411RET6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F411RET6U 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 STM32F411RET6U?
For technical support, including STM32F411RET6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F411RET6U requirements.
6.How does Aetrix verify that STM32F411RET6U is sourced from the original manufacturer or authorized distributors?
All STM32F411RET6U 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 STM32F411RET6U meets industry standards.
7.What is the process for return or replacement of STM32F411RET6U?
All STM32F411RET6U units undergo pre-shipment inspection (PSI). If there is an issue with STM32F411RET6U, 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 STM32F411RET6U part is unused and in its original packaging.
Return procedure for STM32F411RET6U:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F411RET6U Tags
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