Quote Originally Posted by Andre_Pretorius View Post
Interestig is that if you change the 78l05 with a resistor and zenner you can drop the power with about 2.5mA to 1.6mA
Hello

Try setting your oscillator configuration to "LP". You probably have it set to XT or HS? LP will use the least current. Also that chip has an internal oscillator which you can set to 1mhz in the "osccon" register. This way you can try it before you buy a crystal. Look in the datasheet under "oscillator" it is all there.

How much voltage are you feeding into your LM7L05? The higher the input voltage to the regulator, the higher the power disapation.

Mark