What the 84 MHz Cortex-M4 core means for your design
The STM32F401RDT6TR: The ARM Cortex-M4 core runs at 84 MHz and includes a single-cycle multiply-accumulate and hardware floating-point unit. The peripheral set also includes DMA, PWM, a watchdog timer, brown-out detection, and power-on reset — covering the baseline needs of an industrial controller, a motor drive, or a human-machine interface.
Memory headroom and Flash endurance
384 KB of Flash and 96 KB of RAM fit firmware images that include a real-time operating system and a USB stack.