Lpc2000

tsvetanusunov wrote:
>>Random guess. Power supply sequencing and SCR latchup internal to the
> 
> part.
> 
> Bill, 
> 
> this is the exact source of the problem!
> adding 47uF capacitor to the +3.3V LM1117 removed the problem, it 
> seems that for whatsoever reason on these boards +3.3V rises faster 
> than +1.8V and this latch up LPC2106.
> On all our future boards we'll put 10uF to +1.8V and 47uF to +3.3V 
> regulator thus will ensure some delay on +3.3V.

*My* investigations of my strange interrupt handling problems are now 
looking into the high levels of noise I see on the /RST pin when lots of 
serial I/O is happening :-)

> Best regards
> Tsvetan

ABS