on October 30th 6,695

STM32F446RET6 Microcontroller Overview

The STM32F446RET6 microcontroller combines strong performance with versatile connectivity, making it ideal for demanding applications. This article explores its powerful features, memory capabilities, connectivity options, and advanced components, helping you understand how it can enhance complex systems.

Catalog

STM32F446RET6 Product Overview

The STM32F446RET6 microcontroller centers on a powerful Arm Cortex-M4 core, running at up to 180 MHz, making it well-suited for performance-demanding applications. The Cortex-M4 core supports floating-point operations, allowing it to handle complex mathematical tasks with precision and efficiency. Additionally, it offers Digital Signal Processing (DSP) capabilities, which broadens its range of applications, from audio processing to sensor control.

This microcontroller is equipped with built-in Flash memory, up to 512 Kbytes, alongside 128 Kbytes of SRAM. Both types of memory are designed to offer fast and reliable storage, and the additional 4 Kbytes of backup SRAM ensure that key data can be preserved, even if the main power supply drops.

For flexible system integration, it provides a range of I/Os and peripherals, connected across two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix. This configuration is well-thought-out to manage data flows between the core and the various peripherals, enhancing the efficiency of complex operations.

The STM32F446RET6 also features three 12-bit ADCs, two DACs, a real-time clock (RTC) for timekeeping, and various timers, including two PWM timers suited for motor control applications. A broad array of communication interfaces, including I2Cs, SPIs, I2Ss, USARTs, UARTs, and USB OTG ports, means this microcontroller can easily connect to and communicate with other devices in your system. Additional advanced features include two CAN interfaces, two Serial Audio Interfaces (SAI), an SDIO/MMC interface, and support for HDMI-CEC and QuadSPI, expanding its connectivity options even further.

With these features, the STM32F446RET6 is adaptable to many tasks, particularly in areas where both data processing and connectivity are valued.

STM32F446RET6 Pin Configuration

STM32F446RET6 CAD Model

STM32F446RET6 Symbol

STM32F446RET6 Footprint

STM32F446RET6 3D Model

STM32F446RET6 Block Diagram

STM32F446RET6 Power Supply Design

STM32F446RET6 Specifications

Technical specifications, features, characteristics, and components with comparable specifications of STMicroelectronics STM32F446RET6

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 7 months ago)
Factory Lead Time	12 Weeks
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	64-LQFP
Number of Pins	64
Data Converters	A/D 16x12b; D/A 2x12b
Number of I/Os	50
Watchdog Timers	Yes
Operating Temperature	-40°C ~ 85°C TA
Packaging	Tray
Series	STM32F4
Part Status	Active
Moisture Sensitivity Level (MSL)	3 (168 Hours)
Number of Terminations	64
Max Power Dissipation	345mW
Terminal Position	Quad
Terminal Form	Gull Wing
Terminal Pitch	0.5mm
Frequency	180MHz
Base Part Number	STM32F446
Qualification Status	Not Qualified
Interface	CAN, I2C, I2S, IrDA, LIN, SPI, UART, USART, USB
Memory Size	512kB
Oscillator Type	Internal
RAM Size	128K x 8
Voltage - Supply (Vcc/Vdd)	1.7V ~ 3.6V
Core Processor	ARM® Cortex®-M4
Peripherals	Brown-out Detect/Reset, DMA, I2S, LVD, POR, PWM, WDT
Program Memory Type	FLASH
Core Size	32-Bit
Program Memory Size	512KB (512K x 8)
Connectivity	CANbus, EBI/EMI, I2C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG
Supply Current-Max	115mA
Bit Size	32
Data Bus Width	32b
Number of Timers/Counters	14
Core Architecture	ARM
On Chip Program ROM Width	8
Number of A/D Converters	3
Number of ADC Channels	16
Max Junction Temperature (Tj)	105°C
Ambient Temperature Range High	85°C
Number of SPI Channels	4
Number of USB Channels	2
Height	1.6mm
REACH SVHC	No SVHC
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

STM32F446RET6 Key Features

Arm Cortex-M4 CPU

The STM32F446RET6 features an Arm Cortex-M4 CPU, designed to perform efficiently at speeds up to 180 MHz. This processor includes a Floating Point Unit (FPU), enabling it to handle complex mathematical calculations smoothly and with precision. Its built-in Digital Signal Processing (DSP) capability further allows you to tackle tasks like audio processing or sensor data analysis with minimal effort.

Flash and SRAM Memory

This microcontroller comes equipped with 512 Kbytes of Flash memory and 128 Kbytes of SRAM, which provide reliable storage for both program code and data. The Flash memory offers persistent storage, while the SRAM is ideal for quick access. Additionally, a dedicated 4 Kbytes of backup SRAM ensures that essential data remains available, even during a power loss.

External Memory Controller

For added flexibility, the STM32F446RET6 includes an external memory controller, which supports up to a 16-bit data bus. This feature allows you to connect additional memory types such as SRAM, PSRAM, SDRAM, and both NOR and NAND Flash. This option gives your system an easy way to expand its storage capacity for more demanding applications.

Dual-Mode QuadSPI Interface

The dual-mode QuadSPI interface allows for fast data transfers, which are especially useful in applications that require large amounts of data processing or image rendering. This interface is a practical choice if your system relies on high-speed memory for storing large data sets or graphics.

LCD Parallel Interface

The STM32F446RET6 includes an LCD parallel interface compatible with 8080/6800 modes. This interface enables easy connection to LCD displays, making it simpler to integrate visual interfaces into your system. It is particularly helpful if you’re designing devices with display-based user interfaces.

Clock, Reset, and Supply Management

This microcontroller’s clock, reset, and supply management features provide a robust framework to support your device's stability. With a 1.7 V to 3.6 V application supply, along with POR (Power-On Reset), PDR (Power-Down Reset), PVD (Programmable Voltage Detector), and BOR (Brown-Out Reset), this setup ensures smooth startup and reliable operation. It also includes a 4 to 26 MHz crystal oscillator, a 16 MHz internal RC oscillator, and a 32 kHz oscillator for RTC, all calibrated for stable and accurate timing.

Low Power Modes

The STM32F446RET6 offers three low power modes—Sleep, Stop, and Standby—that help conserve energy. These modes make it ideal for battery-operated devices or other applications where minimizing power consumption is a priority. With these modes, your device can perform necessary functions while extending battery life.

ADC and DAC Converters

This microcontroller includes three 12-bit ADCs and two 12-bit DACs. The ADCs (Analog-to-Digital Converters) allow for converting analog signals into digital data across up to 24 channels, while the DACs (Digital-to-Analog Converters) enable digital signals to convert back into analog form. These features are valuable for applications such as audio processing, sensor reading, and control systems.

General-Purpose DMA Controller

The 16-stream DMA (Direct Memory Access) controller with FIFOs and burst support enables efficient data transfer without needing constant CPU intervention. This feature is particularly helpful for high-speed applications, where data needs to move between peripherals and memory quickly and without delays.

Timer Options

The STM32F446RET6 includes up to 17 timers, which support functions such as input capture, output compare, PWM, and pulse counting. Among these are two watchdog timers for monitoring system performance and a SysTick timer for basic timekeeping. These timers provide flexibility and control, enabling precise timing in applications like motor control and event scheduling.

Debugging Interfaces

The microcontroller’s debugging interfaces, including SWD (Serial Wire Debug) and JTAG (Joint Test Action Group) interfaces, facilitate easy troubleshooting and program testing. Additionally, it includes a Cortex-M4 Trace Macrocell, which allows for more in-depth analysis and optimization of your application’s performance, especially useful in complex systems.

STM32F446RET6 Package Dimensions

STM32F446RET6 Manufacturer Information

STMicroelectronics, a globally recognized semiconductor company, is known for developing reliable solutions across the semiconductor spectrum. This company combines expertise in silicon and system design, leveraging its strong manufacturing capabilities and extensive Intellectual Property (IP) library. By working with a variety of strategic partners, STMicroelectronics plays a role in advancing modern microelectronics, particularly with its focus on System-on-Chip (SoC) technology. The STM32F446RET6 exemplifies this approach, crafted to support a wide range of applications with its versatile capabilities.

Comparable Parts to STM32F446RET6

Part Number	STM32F401RET6	STM32F446RET6	STM32F401RDT6	ATSAM4S8BA-AU	STM32F411RET6
Manufacturer	STMicroelectronics	STMicroelectronics	STMicroelectronics	Microchip Technology	STMicroelectronics
Package / Case	64-LQFP	64-LQFP	64-LQFP	64-LQFP	64-LQFP
Number of Pins	64	64	64	64	64
Core Architecture	ARM	ARM	ARM	ARM	ARM
Data Bus Width	32 b	32 b	32 b	32 b	32 b
Number of I/O	50	47	50	50	50
Interface	CAN, I2C, I2S, IrDA, ...	I2C, IrDA, MMC, ...	I2C, I2S, IrDA, SPI, ...	I2C, I2S, IrDA, LIN, ...	I2C, I2S, IrDA, LIN, ...
Memory Size	512 kB	512 kB	512 kB	384 kB	512 kB
Peripherals	Brown-out Detect/Reset, ...	Brown-out Detect/Reset, ...	Brown-out Detect/Reset, ...	Brown-out Detect/Reset, ...	Brown-out Detect/Reset, ...

Datasheet PDF

STM32F446RET6 Datasheet:

STM32F446RET6.pdf

ATSAM4S8BA-AU Datasheet:

ATSAM4S8BA-AU.pdf

ATSAM4S8BA-AU.pdf

STM32F411RET6 Datasheet:

STM32F411RET6.pdf