MCU without crystal

[lpcware]

Content originally posted in LPCWare by Luis Digital on Thu Jan 12 09:39:10 MST 2012
Hello all,

I can leave the crystal input (XI) disconnected when not in use? The processor (LPC111x) takes care automatically?

Thank you.

[lpcware]

Content originally posted in LPCWare by Luis Digital on Thu Jan 12 20:59:05 MST 2012
Yes, that was the experiment: put a bridge between the capacitor pads of the crystal pin XI.

[lpcware]

Content originally posted in LPCWare by gbm on Thu Jan 12 12:57:36 MST 2012
A better idea is to connect XIN to ground, to set input of CMOS amplifier to some reasonable state.

[lpcware]

Content originally posted in LPCWare by Luis Digital on Thu Jan 12 12:46:26 MST 2012
I did some experiments:
- Necessary to use the XI pin.
- Energy consumption decreased 1 mA.

Very well, thank you for your attention. :)