Content originally posted in LPCWare by curtvm on Sat May 29 08:07:09 MST 2010
I have the Rev. 00.10 manual, which does not have the /2 info.
That matches my hardware.
Its either one or the other, and I believe what my scope is telling me. If you look at the revision history on the manual, it appears they have a problem getting their story straight on the systick timer.
(It is a little disturbing that it appears to be that hard to get the correct info into the user manual for such a simple part of the micro. They make the chip, so it shouldn't be that difficult. I can imagine a scenario where someone ran a 'test' on the systick timer, toggling a pin on each systick irq, only to 'discover' that the freq readout says half of what they think it should be, and therefore conclude (incorrectly) the systick timer must be 'half' of the system clock. That's my bet.)