Frequency conversion?

I'm using a DS89C450

I need to monitor a +7V input with variable frequency - is it possible to sample the frequency on a 8051 without additional hardware?

I need this to log revolutions of an engine. Output is as said +7V, when the engine is idling output is 26Hz (approx. 750rpm). So basically I need to translate the frequency of the input to a given value. Is it possible?

EDIT: Can I use the externa... Read Compelte post
Posted by TB on Sat Aug 09 2008, 10:44 pm

Downloads

Comments

PedroDug
Sun May 19 2024, 05:39 pm
JewelAmuck
Sun May 19 2024, 03:06 pm
Minniemus
Sun May 19 2024, 07:39 am
Andyhet
Sat May 18 2024, 07:28 am
BrettTibre
Fri May 17 2024, 06:14 pm
Gordonfax
Fri May 17 2024, 10:28 am
Davidspils
Fri May 17 2024, 10:19 am
Patricknoind
Fri May 17 2024, 09:53 am