re: Brown-out

   Andy, I also got `bit' by the PIC brown-out circuitry. In my case, I'm
using Maxim devices. The Dallas products are also a good option.

   - Tom

At 10:06 PM 1/26/98 -0500, you wrote:
[snip]
>Oh, my.  I have spent the past two weeks working with this one.  I've put
>hardware together to fix the problem, basically a daughterboard for the PIC
>with a reset chip on it.
[snip]
>To remedy the situation, we are requiring all future units to have a Dallas
>DS1233-5 reset chip installed.  I investigated other chips (such as
>Panasonic's from Digi-Key) and found it to have the best parameters.  It
>trips very reliably at 4.5V (+/- 5% is the spec, but reality is much
>tighter), generates a reset pulse a minimum of 300mS wide, and stays low
>until power is up about 4.5V for 300mS.
[snip]
>==================================================================
>Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
>          Hardware & Software for Industry & R/C Hobbies
>        "Go fast, turn right, and keep the wet side down!"
>==================================================================