LPC MicrocontrollersのトピックLPCLink-2 (As Evaluation Board) Double Powered?

LPCLink-2 (As Evaluation Board) Double Powered?

lpcware — Wed, 15 Jun 2016 18:59:13 GMT

Content originally posted in LPCWare by MikeSimmonds on Fri Mar 13 23:06:32 MST 2015
What happens when a LPCLink-2 board is powered both by the probe (probe has J2 closed) AND by
USB (target is connected to PC). Will I damage the target LPCLink-2?

How does this affect resetting. Via debug launch, via plug/unplug (target) USB cable.

Regards, Mike.

Re: LPCLink-2 (As Evaluation Board) Double Powered?

lpcware — Wed, 15 Jun 2016 18:59:14 GMT

Content originally posted in LPCWare by starblue on Mon Mar 16 04:17:52 MST 2015
That connects the outputs of the 3.3V regulators on the two boards. But since the XC6227 regulator has reverse current protection that shouldn't be a problem (no guarantees, please check schematics and data sheet for yourself).

Basically the target board will be powered when at least one of the power sources is available.

Re: LPCLink-2 (As Evaluation Board) Double Powered?

lpcware — Wed, 15 Jun 2016 18:59:14 GMT

Content originally posted in LPCWare by MikeSimmonds on Mon Mar 16 17:17:28 MST 2015
Thank you very very much for that.

That is what I was hoping for, but I am a software guy not a hardware expert.

The reason: I would like to 'reset' the target and re-download edited code via dfu,
but it is always nice not to have to 'loose' the debugger on the other board.

Regards, Mike