Overview
The STM32F446RET7, produced by STMicroelectronics, is a high-performance microcontroller based on the Arm® Cortex®-M4 32-bit RISC core. This device operates at a frequency of up to 180 MHz and features a floating-point unit (FPU) that supports all Arm® single-precision data-processing instructions and data types. It also includes a full set of DSP instructions and a memory protection unit (MPU) for enhanced application security. The STM32F446RET7 is part of the STM32F446xC/E family, known for its robust set of peripherals and low-power modes, making it suitable for a wide range of applications.
Key Specifications
| Specification | Details |
|---|---|
| Core | Arm® 32-bit Cortex®-M4 CPU with FPU, up to 180 MHz, MPU, 225 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions |
| Memories | 512 Kbytes of Flash memory, 128 Kbytes of SRAM, up to 4 Kbytes of backup SRAM, flexible external memory controller |
| ADCs | Three 12-bit ADCs, up to 24 channels and 7.2 MSPS in triple interleaved mode |
| DACs | Two 12-bit D/A converters |
| Timers | Up to 17 timers: two watchdog, one SysTick timer, twelve 16-bit timers, and two 32-bit timers |
| Communication Interfaces | Up to four USARTs, two UARTs, four SPIs, four I2C interfaces, two CAN (2.0B Active), USB 2.0 full-speed/device/host/OTG controller, and more |
| Power Supply | 1.7 V to 3.6 V application supply and I/Os, POR, PDR, PVD, and BOR |
| Low Power Modes | Sleep, Stop, and Standby modes, VBAT supply for RTC |
| I/Os | Up to 114 I/O ports with interrupt capability, up to 111 fast I/Os up to 90 MHz, up to 112 5 V-tolerant I/Os |
Key Features
- Adaptive real-time accelerator (ART Accelerator) allowing 0-wait state execution from Flash memory
- Dual mode QuadSPI interface and LCD parallel interface (8080/6800 modes)
- General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
- Debug mode with SWD and JTAG interfaces, Cortex®-M4 Trace Macrocell™
- Advanced connectivity including USB 2.0 full-speed/device/host/OTG controller, and dedicated USB power rail
- 8- to 14-bit parallel camera interface up to 54 Mbytes/s, CRC calculation unit, and RTC with subsecond accuracy and hardware calendar
Applications
The STM32F446RET7 is versatile and can be used in various applications such as industrial automation, personal electronics, consumer electronics, and advanced motor control systems. Its extensive range of peripherals and communication interfaces make it suitable for complex projects requiring high performance and low power consumption.
Q & A
- What is the core of the STM32F446RET7 microcontroller?
The core is the Arm® 32-bit Cortex®-M4 CPU with FPU, operating at up to 180 MHz. - How much Flash and SRAM memory does the STM32F446RET7 have?
The device has 512 Kbytes of Flash memory and 128 Kbytes of SRAM. - What types of ADCs and DACs are available on the STM32F446RET7?
It features three 12-bit ADCs and two 12-bit D/A converters. - What are the low-power modes available on the STM32F446RET7?
The device supports Sleep, Stop, and Standby modes, along with VBAT supply for RTC. - What communication interfaces does the STM32F446RET7 offer?
It includes up to four USARTs, two UARTs, four SPIs, four I2C interfaces, two CAN (2.0B Active), and USB 2.0 full-speed/device/host/OTG controller among others. - What is the operating voltage range of the STM32F446RET7?
The operating voltage range is from 1.7 V to 3.6 V for application supply and I/Os. - Does the STM32F446RET7 support external memory?
Yes, it has a flexible external memory controller with up to 16-bit data bus supporting SRAM, PSRAM, SDRAM/LPSDR SDRAM, and NOR/NAND Flash memories. - What debug interfaces are available on the STM32F446RET7?
The device supports SWD and JTAG interfaces, along with the Cortex®-M4 Trace Macrocell™. - How many I/O ports does the STM32F446RET7 have?
It has up to 114 I/O ports with interrupt capability. - What is the purpose of the ART Accelerator in the STM32F446RET7?
The ART Accelerator allows 0-wait state execution from Flash memory.
