Lpc2000

> If a peripheral locks up and cannot be recovered by
re-initialisation,
 > it is time to move on.

 > Having to reset or power cycle such purposes is something most
designs
 > will not tolerate.

 > > The Philips part (and most 
 > > others for that matter) gives this guarentee: a watchdog reset is 
 > > the same as a power-on or hard reset (other than the reset source 
 > > identifier). That's just the way I like it, thanks.

 > This "most others for that matter" is yet another ambit claim it
 > seems.  I looked at both SAM and OKI and these designs appear to have
 > put more thought into how one uses the watchdog.

Jaya,
I don't understand your issue. The Philips watchdog can be programmed to
either provide an interrupt (your preferred method), or a reset
(Brendan's preferred method).  You are free to use the method of your
choice. Seems Philips have thought about it. 
Since there may also be external hardware (which also may potentially
get into a lockup state), connected to the /Reset line that is also
reset with a watchdog  I much prefer the "real" reset method. Sometimes
hardware is outside your choice, or you only discover issues late in the
piece and re-rolling a PCB is an expensive and time-costly option.
As you say, if choosing new hardware is an option open to you, maybe you
should choose a SAM or OKI and stop worrying about the LPC.
So far, despite a few documented minor software workarounds, I've been
happy with my choice of LPC2000 series. 
 
Cheers,
Bruce


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