Lpc2000

maestral64 wrote:

>My problem is that I would like to use 'faster' reset, with reset
>delay time up to 100ms. By datasheet 2114 needs min 10 ms. For
>Microchip circuit time delay is 140 ms min, up to 0.5 sec(!) max.
>Any idea/recomendation? Again, I am little bit sceptical to use rC
>circuit reset in professional stand-alone application.
>
>Regards,
>Miodrag
>
Shouldn't this have been a new thread???

The problem with reset chips is that they are overly expensive (why?) 
and customized. I find it cheaper to employ an 8-pin micro 
(PIC12F,LPC900)complete with power-on timer/brown-out detect etc. I can 
configure these for my reset threshold, reset time etc. These micros are 
typically stand-alone, not requiring any external circuitry such as 
crystal etc to operate.

PLUS!, there is always the bonus of having it monitor the coms line and 
being able to reset or ISP the main processor as well as being able to 
operate as an independant configurable watchdog.

Summary:
Configurable intelligent watchdog/reset/monitor *costs less* than a 
fixed reset chip.

my2cents
*Peter*




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