Every single microcontroller is tested many times
during fabrication.
The low speed test is performed first.
(Example of low speed test = 4MHz + security margins).
If there is a huge demand for 4MHz microcontrollers
no further higher speed test is performed.
The microcontrollers are shipped as 4MHz parts.
Luciano
* * * * * * *
Microchip handbook URL:
http://ww1.microchip.com/downloads/e...Doc/00169C.pdf
See page 14, Manufacturing Process.




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