Lpc2000

Not really.

While using the JTAG debugger this pin is controlled by the JTAG 
interface. Also in the LPC2103 which was the device in discussion, the 
RTCK is not multiplexed with GPIO at all. 

Robert

--- In lpc2000@yahoogroups.com, "seangra" <sgraham@o...> wrote:
> I see that people are saying that the RTCK line for JTAG debugging 
> isn't used.  Does this mean that I can use this as a GPIO even when 
> using the JTAG debugger?