STM32F446RET6

The STM32F446xC/E devices are based on the high-performance Arm® Cortex®-M4 32-bit
RISC core operating at a frequency of up to 180 MHz. The Cortex-M4 core features a
floating point unit (FPU) single precision supporting all Arm® single-precision
data-processing instructions and data types. It also implements a full set of DSP instructions
and a memory protection unit (MPU) that enhances application security.
The STM32F446xC/E devices incorporate high-speed embedded memories (Flash memory
up to 512 Kbytes, up to 128 Kbytes of SRAM), up to 4 Kbytes of backup SRAM, and an
extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB
buses and a 32-bit multi-AHB bus matrix.
All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose
16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers.
They also feature standard and advanced communication interfaces.
 Up to four I2Cs
 Four SPIs, three I2Ss full simplex: to achieve audio class accuracy, the I2S peripherals
can be clocked via a dedicated internal audio PLL or via an external clock to allow
synchronization
 Four USARTs plus two UARTs
 An USB OTG full-speed and an USB OTG high-speed with full-speed capability (with
the ULPI), both with dedicated power rails allowing to use them throughout the whole
power range
 Two CANs
 Two SAIs serial audio interfaces: to achieve audio class accuracy, the SAIs can be
clocked via a dedicated internal audio PLL
 SDIO/MMC interface
 Camera interface
 HDMI-CEC
 SPDIF receiver (SPDIFRx)
 QuadSPI
Advanced peripherals include an SDIO, a flexible memory control (FMC) interface, a
camera interface for CMOS sensors. Refer to Table 2 for the list of peripherals available on
each part number.
The STM32F446xC/E devices operate in the –40 to +105 °C temperature range from a
1.7 to 3.6 V power supply.
The supply voltage can drop down to 1.7 V with the use of an external power supply
supervisor (refer to Section 3.16.2: Internal reset OFF). A comprehensive set of
power-saving modes enables the design of low-power applications.
The STM32F446xC/E devices offer devices in six packages, ranging from 64 to 144 pins.
The set of included peripherals changes with the chosen device.
These features make the STM32F446xC/E microcontrollers suitable for a wide range of
applications, namely motor drive and control, medical equipment, industrial (PLC, inverters,
circuit breakers), printers, and scanners, alarm systems, video intercom and HVAC, and
home audio appliances.