Paul Christenson wrote:

> I know that there is a 20 mA/pin source limit on the '64, but is
> there a per port or per chip limit on current sourced?
>
> In short, can I directly run two 7 segment displays (one per port,
> ~10 mA per segment) continuously without a problem?

Paul:

The absolute maximum current sourced per pin is 25 mA, not 20 (at
least, according to section 16.0 of the 16C6X Data Sheet).

Miximum sourced by porta A, B, and E (combined) is 200 mA, and the
maximum current sourced by ports C and D (combined) is also 200 mA.

Also, total power dissipation is shown as 1 Watt.

-Andy
Andrew Warren - fastfwd@ix.netcom.com
Fast Forward Engineering, Vista, California