218x Latchup?

Started by duhlynn July 26, 2005
Anyone experienced latchup issues with the 218x series (ADSP2185M in
particular)?

Thanks
Tim Dahlin



At 10:42 AM 7/26/2005, you wrote:
>Anyone experienced latchup issues with the 218x series (ADSP2185M in
>particular)?
>
>Thanks
>Tim Dahlin

Only once in numerous designs.

The best I can recall it was ADSP-2184L (I have never seen a 218xM problem)

I was writing to a PLD with relatively long lines using the WR line. This
caused a Flag to fail on the other side of the DSP.

The solution was a small series R in the Write line (or a 10pF termination
at the PLD).

Any part can have a problem. This is almost always due to layout or design
flaws and not the chip.

If you can be more specific, I may have better ideas.
Al Clark
Danville Signal Processing, Inc.
--------------------------------
Purveyors of Fine DSP Hardware and other Cool Stuff
Available at http://www.danvillesignal.com