I have a distributed computation/ project that requires a mcu with wireless that has as small as possible of form factor. The requirements are

1: needs to have a form factor less than 5mm by 5mm

2: needs to have a least minimal wireless capability

3: needs to be programmable in something other than ASM/assembely

My last pick was the Nordic nrfLE1 24 pin variant but after wasting multiple months trying to get it to program correctly ive given up on it.

For some background on the project i will tel you that i am developing a project and all the support for the mcu needs to fit within a 4mm X 4mm box(excluding power storage). This may sound unusual but i am saying that with a multi-level circuit type setup in my mind. example. I've turned to you guys here for support on finding an mcu for my needs, please help!