STM32F401xD STM32F401xE ARM® Cortex®-M4 32b MCU.
STMicroelectronics
STM32F401RE - ARM Cortex-M4 32b MCU+FPU
STM32F401xD STM32F401xE ARM® Cortex®-M4 32b MCU+FPU, 105 DMIPS, 512KB Flash/96KB RAM, 11 TIMs, 1 ADC, 11 comm. interfaces Datasheet - production data.