Board description (please complete the following information):

• Name: BlackPill F401CE
• Link to all relevant information:https://github.com/WeActTC/MiniF4-STM32F4x1

If is pretty much the same as existing BlackPill F401CC, but has bigger RAM (96kb) and flash (512kB). Clock is the same.

Here is a board definition

# BlackPill F401CE# https://github.com/WeActTC/MiniF4-STM32F4x1GenF4.menu.pnum.BLACKPILL_F401CE=BlackPill F401CEGenF4.menu.pnum.BLACKPILL_F401CE.upload.maximum_size=524288GenF4.menu.pnum.BLACKPILL_F401CE.upload.maximum_data_size=98304GenF4.menu.pnum.BLACKPILL_F401CE.build.board=BLACKPILL_F401CEGenF4.menu.pnum.BLACKPILL_F401CE.build.product_line=STM32F401xEGenF4.menu.pnum.BLACKPILL_F401CE.build.variant=Generic_F401Cx

I believe changes in GenericF401Cx/PeripherialPins.c and GenericF401Cx/variant.h will be needed in the couple of ifdefs where ARDUINO_BLACKPILL_F401CC is mentioned.