Jtag - dual use

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by brownm on Wed May 22 03:47:05 MST 2013

Hi there

We are designing a product and are one pin short on the LPC812, normally we keep the defined JTAG pins free so that we are able to access the device via jtag at any time via the dedicated (default Pin 0_2 & 0_3) pins. Howver in this case we would like to use one of the Jtag pins (SWCLK) for a blinky LED, nothing too important while we are actually doing the debug, but if we change the function of this pin will we be able to get access to the device via the JTAG after programming it the first time?

Thanks and Regards


Marshall Brown