Posted on April 12, 2017 at 17:38If you need a lot of memory, consider an F4 alternative either with SDRAM (not SRAM) externally, or more internally. There are larger internal SRAM options in the F4 family and pin compatibility, most have an additional 64KB of CCM RAM above anything in the F2 family. One of our boards was designed to take a whole range of F2 and F4 chips depending on firmware size requirements, and those for SRAM, of our end customers and their applications.
Do note however that external memory is significantly slower than internal memory, and the architecture does not provide caching, so don't put the stack there. Think carefully about part selection and board costs as a system.
