There was a question earlier today about how long it should take to program
a 18F452.  I ran some tests on an EasyProg and here are the results:

  PIC       Seconds
  -------   -------
  12F675    13.5
  16F628    24.1
  16F877    55.4
  18F1320   17.8
  18F452    37.2

In all cases, the time listed was the real elapsed time to identify the PIC,
erase all non-volatile memory, program it, and read back the data twice
(once at each Vdd limit).  The HEX files contained values for every
programmable location.  These are program memory, config words, user ID
words, and data EEPROM.  The regular program memory and data EEPROM data was
randomly generated.  No writes were optimized away.  In other words, the
programmer actually wrote all locations.

On the 18F family, the programmer uses a reasonably fast, but not the
fastest possible algorithm to write program memory.  Writing the data EEPROM
is only implemented on the host (not the EasyProg firmware) and could be
several seconds shorter.

So 57 seconds for a full 18F452 is definitely "slow", especially if it's
only doing one verify pass.  However, I don't consider that out of line for
a cheap programmer.  If you do, I'll be happy to suggest alternatives ;-)


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