On Mon, 24 Jan 2005 11:18:02 +0100 (MET), you wrote: >Mike Harrison wrote : > >> Use a micropower regulator. e.g. Holtek HT7150 - about 1-2 >> microamps for the regulator and a few >> tens of uA for the PIC, less if WDT is disabled. >> There are several other micropower regulators available - I >> think Micorchip inherited some from the old Telcom line,... > >Problem with the MC LDO regs, are that very few of them >accept a higher input voltage then 6 V (!). > >Regards, >Jan-Erik. The Holtek one takes up to 24V. I think the Onsemis go to either 10 or 12V from memory -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist