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

Bobbyerilar
Thu Mar 28 2024, 08:08 am
pb58
Thu Mar 28 2024, 05:54 am
Clarazkafup
Thu Mar 28 2024, 02:24 am
Walterkic
Thu Mar 28 2024, 01:19 am
Davidusawn
Wed Mar 27 2024, 08:30 pm
Richardsop
Tue Mar 26 2024, 10:33 pm
Stevencog
Tue Mar 26 2024, 04:26 pm
Bernardwarge
Tue Mar 26 2024, 11:15 am