Lpc2000

This is definitely very interesting idea I heard some time ago. 
I am considering that as well.
There is also 68HC908 which is automotive approved.
Only critical thing is reset of this small devices (micros) reliability.
It will be bad if small micro would not be properly reseted.
If I have some time in future I will try to apply test with few
thousands resets - ideally on different temperatures(-20, +70) to see
what is reliability (or there is guarantie from manufacturer about this?)

Miodrag

--- In lpc2000@yahoogroups.com, Peter Jakacki <peterjak@t...> wrote:
> 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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