Peter Koblauch

ICS clock trimming: how is it implemented in the Programmers

Discussion created by Peter Koblauch on Apr 14, 2008
Latest reply on Apr 14, 2008 by David Payne
  I've  read the application notes on ICS clock trimming and ICG as well
  and it seems really pretty straight-forward. There was however some
  information that I missed regarding how trimming is done at the factory
  and by the the various development boards and programmers.

 At the factory: is that a trimming per individual device or some sort of average
  for the device category? What I mean do they for each chip perform a separate
    chip specific trimming? Purpose of course would be to reduce the effects of
    process variations.

Then the development boards and programmers:
    The programmers have access to precise internal clocks
    so it would seem obvious that they do this. I know it might add
   some time to the total ptogramming time, so likely an option
    But is that what they do? a device specific / per chip specific trim?

thanks a lot