alternative Pin for vref

[mackrackit]

The 12F675 will run on 2.5 volts at 4 MHz.
If 4MHz is not a problem for you app, then it should work.

[KVLV]

this is only suggestion, if the lm35 is for reading temperature, then i suggest using 1-wire device like ds18b20. the ds18b20 only require 1 pin from the pic12f675.

[skimask]

And before the original posters asks...
Do a search when you have problems with displaying negative temperatures. Plenty of working code examples around here for dealing with the DS1820.

[ruijc]

Thanks guys,

the ds18b20 is a good idea.
The problem is the temperature range. I need a sensor that can measure up to 150ºC at least ( no negative readings required ).

The LM35 can go that far. But not the ds18b20

.