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Which of the following is NOT normally a microcontroller selection criterion?

  • A.the quiescent current in the deepest sleep mode
  • B.the die size of the silicon inside the package
  • C.the operating temperature range guaranteed by the manufacturer
  • D.the availability of a second source or a pin-compatible alternative

Answer: B

Die size affects the vendor's cost but is neither published nor relevant to the buyer; the package outline is what constrains the board. Temperature grade, second sourcing and sleep current are all live considerations in a real selection.

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