Lpc2000

Can someone tell me how much current the GPIO pins can source? Do any 
pins drive more than others? 

I've looked all over the docs and archive and don't see an answer. 
I'm using the 2138 but I imagine all families are similar.

I was surprised when a friend told he had a PIC that would drive an 
LED directly @ 20 mA (but only one at a time).

thanks, Tom

--- In lpc2000@yahoogroups.com, "tkreyche" <tkreyche@w...> wrote:
> 
> Can someone tell me how much current the GPIO pins can source? Do 
any 
> pins drive more than others? 
> 
> I've looked all over the docs and archive and don't see an answer. 
> I'm using the 2138 but I imagine all families are similar.
> 
> I was surprised when a friend told he had a PIC that would drive an 
> LED directly @ 20 mA (but only one at a time).
> 
> thanks, Tom

I emailed Philips with this question some time ago and they sent me a 
document - unfortunately I cannot find it now :-( but I think it was 
either 4ma or 7ma.  Not very much anyhow, and it is not in the normal 
user manuals.

PICs often have a few pins allocated with this kind of capability.

Regards,
Richard.

http://www.FreeRTOS.org

On Wed, 16 Mar 2005 17:51:00 -0000, Richard wrote:

--- In lpc2000@yahoogroups.com, "tkreyche" <tkreyche@w...> wrote:
> 
> Can someone tell me how much current the GPIO pins can source? Do 
any 
> pins drive more than others? 
> 
> I've looked all over the docs and archive and don't see an answer. 
> I'm using the 2138 but I imagine all families are similar.
> 
> I was surprised when a friend told he had a PIC that would drive an 
> LED directly @ 20 mA (but only one at a time).
> 
> thanks, Tom

I emailed Philips with this question some time ago and they sent me a 
document - unfortunately I cannot find it now :-( but I think it was 
either 4ma or 7ma.  Not very much anyhow, and it is not in the normal 
user manuals.

PICs often have a few pins allocated with this kind of capability.

Regards,
Richard.

--------------------------------------------------------------------
I just checked the LPC2114 data sheet yesterday and the drive was 4ma
for both sink and source.

Regards
-Bill Knight
R O SoftWare &
http://www.theARMPatch.com

Hi,

  I asked the same question about 2 months ago. Just checked the
response and what they said was it can sink and source up to 4ma per pin.

regards,
Charles


--- In lpc2000@yahoogroups.com, "Bill Knight" <BillK@t...> wrote:

> On Wed, 16 Mar 2005 17:51:00 -0000, Richard wrote:
> 
> --- In lpc2000@yahoogroups.com, "tkreyche" <tkreyche@w...> wrote:
> > 
> > Can someone tell me how much current the GPIO pins can source? Do 
> any 
> > pins drive more than others? 
> > 
> > I've looked all over the docs and archive and don't see an answer. 
> > I'm using the 2138 but I imagine all families are similar.
> > 
> > I was surprised when a friend told he had a PIC that would drive an 
> > LED directly @ 20 mA (but only one at a time).
> > 
> > thanks, Tom
> 
> I emailed Philips with this question some time ago and they sent me a 
> document - unfortunately I cannot find it now :-( but I think it was 
> either 4ma or 7ma.  Not very much anyhow, and it is not in the normal 
> user manuals.
> 
> PICs often have a few pins allocated with this kind of capability.
> 
> Regards,
> Richard.
> 
> --------------------------------------------------------------------
> I just checked the LPC2114 data sheet yesterday and the drive was 4ma
> for both sink and source.
> 
> Regards
> -Bill Knight
> R O SoftWare &
> http://www.theARMPatch.com