Probier das mal:

$regfile "m48def.dat"
$crystal = 8000000

Config Pinc.4 = Input
Portc.4 = 0

Config Portb = Output
Config Portd = Output
Config Lcdpin = Pin , Db4 = Portd.6 , Db5 = Portd.5 , Db6 = Portb.7 , Db7 = Portb.6 , E = Portd.7 , Rs = Portb.0
Config Lcd = 16 * 2

Config Adc = Single , Prescaler = Auto
Config Portc.0 = Input

Dim W As Word
Dim Z1 As Single

Dim Temp As Single

Do
Portb.1 = 1

W = Getadc(2)

Z1 = 597 - W
Temp = Z1 * 0.5
Temp = Temp + 25



Cls
Locate 1 . 1
Lcd Temp
Locate 2 . 1
Lcd W
Waitms 300

Loop



Verändern sich Deine Werte überhaupt mit der Temperatur?

mfg
Pidi