Can one use the same .hex file to program both the STM32F446RET6 and STM32F446RCT6?

[Sawd]

The STM32F446RET6 and STM32F446RCT6 are similar except for Flash size. Is it possible to create a .hex file that programs the RE version that could program both chips using the ST-Link V2?

[Tesla DeLorean]

If the image fits in the smaller flash you should be able to create a single image.

The flash size is in a variable you can recover from the System/OTP memory space.

The size frequently refers to how much of the flash memory on the die was tested, as this is a significant cost in terms of test time and throughput.