Skip to main content
Electrical Engineering

Return to Question

added 76 characters in body
Source Link
devnull
devnull
  • 9.6k
  • 2
  • 17
  • 43

I'm reading an analogic signal (0-5v) with a pic 18f458 by an0. I've I'm setting an3 as vref+, i and used zennera 3.3v3V Zenner. I'm I'm changing the signal with a potenciometerpotentiometer. I've I've used a multimeter to check the voltage in an0. An0 change

An0 is changing with this valevalues: 1, 7, 15, 31, 68, 127, 255, 512, 768, 848, 960, 1001, 1023. Why

Why doesn't show the other values like 300, 20... ? The

The voltage change unchanges in a resolution fromof mV. Can anyone helpme?

Datasheet

I'm reading an analogic signal (0-5v) with a pic 18f458 by an0. I've setting an3 as vref+, i used zenner 3.3v. I'm changing the signal with a potenciometer. I've used a multimeter to check the voltage in an0. An0 change with this vale: 1, 7, 15, 31, 68, 127, 255, 512, 768, 848, 960, 1001, 1023. Why doesn't show the other values like 300, 20... ? The voltage change un a resolution from mV. Can anyone helpme?

I'm reading an analogic signal (0-5v) with a pic 18f458 by an0. I'm setting an3 as vref+ and used a 3.3V Zenner. I'm changing the signal with a potentiometer. I've used a multimeter to check the voltage in an0.

An0 is changing with this values: 1, 7, 15, 31, 68, 127, 255, 512, 768, 848, 960, 1001, 1023.

Why doesn't show the other values like 300, 20... ?

The voltage changes in a resolution of mV.

Datasheet

Source Link
ted9090
ted9090
  • 11
  • 2

How is the minimum resolution that pic 18f458 can work?

I'm reading an analogic signal (0-5v) with a pic 18f458 by an0. I've setting an3 as vref+, i used zenner 3.3v. I'm changing the signal with a potenciometer. I've used a multimeter to check the voltage in an0. An0 change with this vale: 1, 7, 15, 31, 68, 127, 255, 512, 768, 848, 960, 1001, 1023. Why doesn't show the other values like 300, 20... ? The voltage change un a resolution from mV. Can anyone helpme?