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Late in a project the code overruns the flash by ten per cent. The least disruptive remedy is usually

  • A.moving to a different vendor's part with more flash
  • B.removing the debug interface to recover its footprint
  • C.fitting the next part up in a pin-compatible family
  • D.rewriting the application in assembler

Answer: C

A drop-in replacement needs no board change and no driver work, which is exactly why the family was chosen. Rewriting in assembler buys perhaps a fifth at enormous cost, and changing vendor restarts the driver and toolchain work.

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