Hi Henrik,

Many thanks for your help. I was going round in circles last night. I was confused by the fact that the timer could be clocked when the oscillator was shut down, but as you say, there it was in black and white - secondary oscillator!!! I was glancing past the SOSCI/O part, just seeing the OSCI/O thinking it was the main oscillator. Anyway, I've fitted a 32.768 KHz xtal to the secondary pins and will continue with things. Last night I did manage to get the chip to go to idle, but I guess that's no mean feat! Going to sleep, sent it to sleep and that was that lol.

Cheers again, you have been a great deal of help on what most people would consider a simple issue.

Jimbo