So it will try to source more, pass the design spec on
the chip and destroy the port/chip?  I knew it was too
good to be true. :-(

Thanks much,
-Neil.


-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Olin Lathrop
Sent: Sunday, May 19, 2002 9:21 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: Output drivers...


> In keeping with my philosophy of minimal component-count in any circuit,
> I'm wondering if it is an acceptable strategy to run multiplexed 7-segment
> LED's thru a 16F872 output port w/o the use of current-limiting resistors,
> when the current I need is the max rating of the output port (25ma source
> or sink).

No, bad idea.  The 25mA spec means that is the max you should allow the port
to source or sink, not the maximum it will source or sink when tied to power
or ground or whatever.


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