STM32F411RET6

Product Overview

The STM32F411RET6 from STMicroelectronics is a high-performance 32-bit microcontroller based on the Arm Cortex-M4 core with floating-point unit (FPU), DSP instructions and Memory Protection Unit (MPU). It operates at up to 100MHz and integrates 512KB of Flash memory and 128KB of SRAM.

The device combines high processing performance with dynamic power efficiency and includes a 12-bit ADC, DMA controllers, multiple timers, USB 2.0 full-speed OTG, SDIO, SPI/I²S, USART and I²C interfaces. The STM32F411RET6 is housed in a 64-pin LQFP package and is designed for industrial embedded systems, control applications, portable equipment, sensors and connectivity products.

Key Features

• Arm 32-bit Cortex-M4 CPU with FPU

• Up to 100MHz CPU frequency

• DSP instructions

• Memory Protection Unit

• 512KB Flash memory

• 128KB SRAM

• ART Accelerator for Flash execution

• 12-bit ADC

• Up to 16 ADC channels

• 16-stream general-purpose DMA with FIFO and burst support

• Up to 81 I/O ports across the family

• Six 16-bit general-purpose timers

• Two 32-bit general-purpose timers

• Two watchdog timers

• SysTick timer

• USB 2.0 full-speed device/host/OTG controller

• SDIO interface

• SPI/I²S interfaces

• USART interfaces

• I²C interfaces

• Low-power RTC

• CRC calculation unit

• 96-bit unique ID

• SWD and JTAG debugging

• 1.7V to 3.6V supply range

• ECOPACK2 compliant

Technical Specifications

ST identifies STM32F411RET6 as an Active product in volume production with a 64-pin LQFP 10 × 10 × 1.4mmpackage and an industrial operating temperature range of -40°C to +85°C.

Processor & Architecture

The STM32F411RET6 integrates a high-performance Arm Cortex-M4 32-bit RISC processor operating at up to 100MHz.

The Cortex-M4 core includes:

• Single-precision floating-point unit

• DSP instructions

• Memory Protection Unit

• 125 DMIPS performance

• ART Accelerator

• 1.25 DMIPS/MHz Dhrystone performance

The ART Accelerator enables zero-wait-state execution from Flash under applicable operating conditions, improving application performance while reducing the need for external memory.

Memory & Storage

The STM32F411RET6 provides:

• 512KB embedded Flash memory

• 128KB SRAM

• Flash memory interface with acceleration

• Memory protection

• 96-bit unique device identifier

The 512KB Flash capacity provides substantial space for firmware, communication stacks, control algorithms and application software, while 128KB SRAM supports runtime data processing and buffering.

Analog Peripherals

The STM32F411RET6 integrates a 12-bit ADC supporting up to 16 channels.

ADC features include:

• 12-bit resolution

• Up to 16 channels

• Up to 2.4MSPS conversion rate

• Multiple conversion modes

• DMA support

• Analog sensor interfacing

The ADC is suitable for voltage monitoring, sensor acquisition, industrial measurement and embedded control applications.

Timer & PWM Resources

The STM32F411RET6 provides extensive timing and PWM resources:

• Six 16-bit timers

• Two 32-bit timers

• Up to 11 timers across the family

• PWM generation

• Input capture

• Output compare

• Pulse counting

• Quadrature encoder input

• Two watchdog timers

• SysTick timer

The timer peripherals support real-time control, motor-control-related PWM generation, event timing and measurement applications.

Communication & Connectivity

The STM32F411RET6 integrates multiple high-speed communication interfaces.

USART

The STM32F411 family supports up to three USART interfaces, including:

• High-speed asynchronous communication

• Synchronous communication

• LIN

• IrDA

• ISO 7816 interface

• Modem control

SPI / I²S

The device family provides up to five SPI/I²S interfaces supporting:

• SPI communication

• I²S audio

• Full-duplex operation on applicable interfaces

• High-speed data transfer

• Audio clock support through dedicated audio PLL resources

I²C

Up to three I²C interfaces support:

• Standard I²C communication

• SMBus

• PMBus

• Multi-device communication

USB

The integrated USB 2.0 full-speed OTG controller supports:

• USB host

• USB device

• USB On-The-Go

• Full-speed USB operation

• On-chip USB PHY

SDIO

The SDIO interface supports SD/MMC/eMMC memory and storage connectivity.

ST lists the STM32F411 family with up to three USARTs, five SPI/I²S interfaces, three I²C interfaces, SDIO and USB 2.0 full-speed OTG.

Clock & Power Management

The STM32F411RET6 provides a flexible clock system including:

• 4MHz to 26MHz external crystal oscillator

• Internal 16MHz factory-trimmed RC oscillator

• 32kHz oscillator for RTC

• Internal 32kHz RC oscillator

• PLL-based high-speed clock generation

• RTC clock support

• Power-on reset

• Power-down reset

• Programmable voltage detector

• Brownout reset

The system supports clock scaling and dynamic power management for balancing performance and energy consumption.

Low-Power Operation

The STM32F411RET6 belongs to ST's Dynamic Efficiency line and provides multiple low-power operating modes.

Typical family-level characteristics include:

• Run mode: approximately 100µA/MHz with peripherals disabled

• Stop mode: approximately 42µA typical at 25°C with Flash in Stop mode

• Deep power-down Stop configuration: down to approximately 9µA at 25°C

• Standby: approximately 1.8µA at 25°C and 1.7V without RTC

• VBAT RTC supply: approximately 1µA at 25°C

The Batch Acquisition Mode (BAM) can further reduce power consumption during data-batching operations by allowing communication peripherals to exchange data while the CPU remains in a low-power state.

Power Management

The STM32F411RET6 supports:

• 1.7V to 3.6V application supply

• 1.7V to 3.6V I/O supply

• Power-on reset

• Power-down reset

• Programmable voltage detector

• Brownout reset

• Multiple low-power modes

• RTC battery supply

• Dynamic power scaling

These features allow the MCU to maintain high processing performance while supporting energy-efficient embedded system designs.

Security & Data Integrity

The STM32F411RET6 provides several hardware mechanisms for system security and data integrity:

• Memory Protection Unit

• CRC calculation unit

• 96-bit unique ID

• Flash memory protection features

• Brownout and voltage monitoring

• Secure debug configuration

The MPU can be used to control access permissions between different memory regions and improve software reliability in embedded applications.

Development & Debugging

The STM32F411RET6 supports:

• Serial Wire Debug (SWD)

• JTAG

• Cortex-M4 Embedded Trace Macrocell

• STM32Cube development ecosystem

• STM32CubeMX

• STM32CubeIDE

• STM32CubeF4 software package

• In-system Flash programming

• ST development and debugging tools

ST provides STM32F4 reference documentation, programming manuals, development tools and STM32Cube software resources for the STM32F411 family.

Applications

The STM32F411RET6 is suitable for:

• Industrial automation

• Embedded control

• Motor control

• Sensor systems

• Data acquisition

• USB devices

• USB host applications

• Portable equipment

• Industrial instrumentation

• Audio applications

• IoT devices

• Consumer electronics

• Data loggers

• Human-machine interfaces

• Smart devices

The combination of Cortex-M4 DSP/FPU capability, large Flash and SRAM resources, USB OTG, SDIO and multiple serial interfaces makes the STM32F411RET6 suitable for performance-oriented embedded designs.

Benefits

• 100MHz Arm Cortex-M4 performance

• Integrated single-precision FPU

• DSP instruction support

• 512KB Flash memory

• 128KB SRAM

• 12-bit 2.4MSPS ADC

• Multiple timer and PWM resources

• USB 2.0 full-speed OTG

• SDIO interface

• Multiple SPI/I²S interfaces

• Multiple USART interfaces

• Multiple I²C interfaces

• DMA with FIFO and burst support

• Low-power operating modes

• 96-bit unique ID

• Compact 64-pin LQFP package

Packaging & Ordering Information

• Part Number: STM32F411RET6

• Manufacturer: STMicroelectronics

• Device Family: STM32F411RE

• Series: STM32F4

• Package: 64-pin LQFP

• Package Code: LQFP64

• Package Size: 10mm × 10mm × 1.4mm

• Operating Temperature: -40°C to +85°C

• Supply Voltage: 1.7V to 3.6V

• Product Status: Active

• Packing Type: Tray

ST's official product information identifies STM32F411RET6 as an Active 64-pin LQFP device in volume production. The related STM32F411RET6TR uses the same package with tape-and-reel packaging, while the exact RET6ordering option is the non-TR version.

Datasheet

For complete electrical characteristics, pin configuration, memory architecture, ADC specifications, timer configuration, communication interfaces, USB specifications, absolute maximum ratings, and application information, please refer to the official STMicroelectronics documentation.

Datasheet: Official STM32F411RET6 Datasheet

Frequently Asked Questions

Q: What is the STM32F411RET6?
A: The STM32F411RET6 is a STMicroelectronics 32-bit Arm Cortex-M4 microcontroller operating at up to 100MHz with FPU and DSP capabilities.

Q: How much Flash memory does the STM32F411RET6 have?
A: It provides 512KB of embedded Flash memory.

Q: How much RAM does the STM32F411RET6 have?
A: The device integrates 128KB of SRAM.

Q: What package does the STM32F411RET6 use?
A: It uses a 64-pin LQFP package measuring approximately 10mm × 10mm × 1.4mm.

Q: What is the operating voltage?
A: The application supply and I/O supply range is 1.7V to 3.6V.

Q: What is the maximum CPU frequency?
A: The Cortex-M4 CPU operates at up to 100MHz.

Q: Does the STM32F411RET6 have an ADC?
A: Yes. It integrates a 12-bit ADC with up to 16 channels and up to 2.4MSPS conversion performance.

Q: Does the STM32F411RET6 support USB?
A: Yes. The STM32F411 family integrates a USB 2.0 full-speed device/host/OTG controller with on-chip PHY.

Q: Does the STM32F411RET6 support SPI, I²C and USART?
A: Yes. The STM32F411 family provides multiple SPI/I²S, I²C and USART interfaces.

Q: Is the STM32F411RET6 an active product?
A: Yes. STMicroelectronics currently lists STM32F411RET6 as an Active product in volume production.

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