I am trying to generate a 77Khz signal from a surface mount pic in 10ms bursts.
The way I have attempted to do it at the moment I require the program
counter to increment every 0.5uS which means I need a resonator speed of
8MHz - as the PC is incremented at a quarter of the pic clock speed.

All the SMD pics in the (Farnell) catalog are 4MHz devices - and here's the
stupid question - will I be able to use an 8MHz resonator?

If anyone has any sugestions on how to achieve a 77KHz output (in 10mS
bursts) for an SMD 4MHz pic I would love to hear them!

Cheers,

Steve Addison
University of Aberdeen
Tillydrone Avenue
Aberdeen
Scotland
UK
AB9 2TN
Tel: UK 01224 272889
Fax: UK 01224 272396