A super cost-effective chip STM32F446RET6, which is much more valuable than STM32F405R. It has floating-point M4F core, 180MHZ main frequency, camera interface, QSPI simple and large-capacity FLASH interface. Memory 128KB RAM, 512KB FLash, QSPI interface can easily expand the memory capacity.

Features of chip STM32F446RET6:

Core processor: ARM Cortex-M4F

Core Size: 32-bit

Speed: 180MHz

Connectivity: CAN, EBI/EMI, I2C, IrDA, LIN, SAI, SD, SPDIF-Rx, QSPI, SPI, UART/USART, USB, HS USB OTG

Peripherals: Brownout Detect/Reset, DMA, I2S, LVD, POR, PWM, WDT

Number of I/Os: 50

Program storage capacity: 512KB (512K x 8)

Program Memory Type: Flash

RAM capacity: 128K x 8

Voltage - Power (Vcc/Vdd): 1.7 V ~ 3.6 V

Data Converter: A/D 16x12b, D/A 2x12b

Oscillator Type: Internal

Operating temperature: -40°C ~ 85°C (TA)

Package/Enclosure: 64-LQFP

Vendor Device Package: 64-LQFP (10x10)

STM32F446RET6 microcontroller features:

ARM Cortex-M4 processor, supports up to 180 MHz main frequency, 512 KB flash memory, 128 KB SRAM, and 4 KB SRAM backup. Universal Timer 10, Advanced Controlled Timer 2, Basic Timer 2.

SPI4, I2S2, USART4, UART2, USB OTG Full and High Speed, CAN2, SAI2

SPDIF-receive 1, HDMI-CEC1, four-channel SPI1, camera interface, GPIO*50

3 12-bit ADCs with 16 channels, 12-bit DAC with 2 channels.

Let‘s go back to the focus of the board. I believe everyone is looking forward to this STM32F446 chip. This chip uses ST‘s unique adaptive real-time accelerator technology, intelligent system architecture and advanced 90nm flash memory technology, which further improves the processing performance of the standard ARM Cortex-M4 core with built-in floating point unit and DSP instructions. Therefore, the CPU of the STM32F446 has a processing performance of 225 DMIPS, which is ahead of similar products. When executing the software code in the flash memory at a frequency of 180MHz, the CoreMark® test score achieved a good score of 608 points.

This chip is also rich in peripherals, enabling efficient concurrent communication through multiple interfaces, making industrial, technological, medical and IoT applications more intelligent and more interactive. At the same time, advanced processing technology and dynamic voltage regulation, a wide range of clock Gating and flexible sleep modes enable efficient power savings.

The integrated peripheral functions are as follows:

1. 2 dedicated audio PLLs, SPDIF input, 3 half-duplex I2S and 2 serial audio interfaces (SAI), supporting full duplex I2S and time division multiplexing (TDM) modes.

2. Up to 20 communication interfaces (including 4 USARTs, 2 UARTs up to 11.25 Mbit/s, 4 SPIs up to 45 Mbit/s, 3 I2C with new optional digital filter function, 2 CAN, SDIO, HDMI CEC and camera interface)

3. Two 12-bit DACs, three 12-bit ADCs at 2 MSPS or 7.2 MSPS (interleaved mode) Timers Up to 17: 16 and 32-bit timers at frequencies up to 180 MHz

4. The storage range can be easily expanded using a flexible 90 MHz memory controller with a 32-bit parallel interface that supports Compact Flash, SRAM, PSRAM, NOR, NAND and SDRAM memories

5. Since the 90MHz Dual quadSPI interface supports memory mapping mode, economical NOR flash memory expansion is possible.

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