The STMicroelectronics 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.

Debug mode
SWD and JTAG interfaces
Cortex®-M4 Trace Microcell™
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
Up to 20 communication interfaces
SPDIF-Rx
Up to 4x I2C interfaces (SMBus/PMBus)
Up to four USARTs and two UARTs (11.25 Mbit/s, ISO7816 interface, LIN, IrDA, modem control)
Up to four SPIs (45 Mbits/s), three with mixed I2S for audio class accuracy via internal audio PLL or external clock
2x SAI (serial audio interface)
2x CAN (2.0B Active)
SDIO interface
Consumer electronics control (CEC) I/F