STM32F446RET6

Core parameters

The above core specifications are based on STMicroelectronics’ official product page and datasheet.

Features

High-performance Cortex-M4 processing power

The STM32F446RET6 uses an Arm Cortex-M4 32-bit RISC core with a maximum operating frequency of 180MHz, and integrates a single-precision FPU, DSP instruction set, and MPU. The FPU accelerates floating-point operations, while the DSP instruction set is suitable for tasks such as digital filtering, control algorithms, and audio signal processing, providing strong computing power in real-time embedded systems.

Large-capacity on-chip storage resources

The device provides 512KB Flash and 128KB SRAM , which can meet the needs of complex firmware, communication protocol stacks, real-time control algorithms, and data caching. It also supports external memory controllers and can connect to SRAM, PSRAM, SDRAM, NOR Flash, and NAND Flash to further expand system capacity.

Rich communication interfaces

The STM32F446RET6 integrates multiple standard communication interfaces, including SPI, I²C, USART, UART, CAN, USB OTG, and SDIO, enabling connection to sensors, displays, memory, industrial buses, and communication modules. Its rich interface resources reduce the number of external bridging chips and improve system integration.

Powerful simulation and timing functions

This device integrates three 12-bit ADCs and two 12-bit DACs, which can be used for sensor acquisition, analog control, and signal conversion. It also provides multiple 16-bit and 32-bit timers, including a PWM timer for motor control, suitable for real-time control and motion control systems.

Flexible external storage and high-speed expansion

The STM32F446RET6 supports the FMC external memory controller and the Dual Quad-SPI interface, allowing connection to external NOR/NAND Flash, SRAM, SDRAM, and other storage resources. For embedded devices requiring large program space, graphics resources, or data caching, this feature enhances system scalability.

Low power operating mode

The device supports low-power modes such as Sleep, Stop, and Standby, and provides an independent VBAT power domain for RTC and backup registers, which can reduce power consumption in standby mode while meeting real-time control requirements.

Typical application scenarios

Industrial Automation

The STM32F446RET6 can be used in PLCs, industrial controllers, sensor control modules, automation equipment, and human-machine interfaces, enabling real-time data acquisition and control through a rich set of ADCs, timers, and communication interfaces.

Motor control

The device integrates multiple timers and PWM resources, and can be used in BLDC, PMSM and other motor control systems, and can be combined with Cortex-M4 DSP instructions to implement real-time control algorithms.

Audio and Digital Signal Processing

Resources such as FPU, DSP instructions, I²S, and SAI make it suitable for audio devices, digital signal processing terminals, and embedded applications that require real-time filtering and floating-point operations.

USB and communication devices

It integrates interfaces such as USB OTG FS/HS, CAN, SPI, I²C, USART/UART and SDIO, and can be used in industrial gateways, data acquisition terminals, communication controllers and USB peripherals.

Embedded human-computer interaction devices

With its high CPU performance, abundant GPIO, external storage control, and multiple communication interfaces, it can be used in display controllers, embedded terminals, and intelligent instruments.

Comparative Advantage Analysis

The advantages of the STM32F446RET6 are mainly reflected in its processing performance, on-chip storage capacity, DSP/FPU computing power, and peripheral integration . For embedded systems that require real-time computing, multi-interface communication, and strong data processing capabilities, this device can reduce the number of external control and interface chips.

Manufacturer Profile: STMicroelectronics

STMicroelectronics is a leading global semiconductor manufacturer, offering products including microcontrollers, analog devices, power devices, sensors, and embedded solutions. The STM32 series of MCUs, based on the Arm Cortex-M core, covers a wide range of application levels, from low-power control to high-performance real-time processing.

The STM32F446RET6 belongs to the STM32F4 high-performance product family. ST officially classifies this model as an Active, volume production product, using an LQFP-64 10×10×1.4mm package, and has an Industrial product grade.

Why choose STM32F446RET6?

● Employs a 180MHz Arm Cortex-M4 core for high real-time processing performance.
● Integrates a single-precision FPU, DSP instruction set, and MPU.
● 512KB Flash + 128KB SRAM, suitable for complex embedded firmware .
● Integrates interfaces such as USB OTG, CAN, SPI, I²C, USART/UART, and SDIO.
● Provides three 12-bit ADCs and two 12-bit DACs .
● Supports FMC and Dual Quad-SPI external memory expansion.
● LQFP-64 package balances I/O resources and PCB integration.
● STMicroelectronics original product, suitable for industrial-grade embedded designs.

Frequently Asked Questions (FAQ)

Q1: What are the Flash and RAM capacities of the STM32F446RET6?

The STM32F446RET6 integrates 512KB Flash and 128KB SRAM , and also supports up to 4KB of backup SRAM, which can meet the needs of more complex embedded programs, communication protocols and data caching.

Q2: What is the highest operating frequency of the STM32F446RET6?

This device uses an Arm Cortex- M4 core with a maximum CPU operating frequency of 180MHz and supports FPU and DSP instructions, making it suitable for real-time control , digital signal processing, and complex embedded computing tasks.

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