50 MHz range frequency counter using ATtiny45 microcontroller

Posted on Feb 4, 2014

A wide range frequency meter is an useful tool for an electronics lab. This projects describes a frequency meter based on AT90S231 microcontroller that can measure input frequencies up to 50 MHz. The measured frequency is displayed on 6 digit multiplexed seven segment displays. It uses two external high-speed 8-bit counters (74HC590) in cascade to

50 MHz range frequency counter using ATtiny45 microcontroller
Click here to download the full size of the above Circuit.

count the incoming pulses. Depending upon the input frequency, the counting interval for the external counter circuit is changed by the microcontroller for getting better accuracy. The firmware for AT90S231 is provided in C.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    disco lighting
    Automatic Gain Control ( AGC )
    Astable multivibrator circuits
    Receiver Frequency-Converter Stage
    Universal Laboratory Power Supply Circuit
    one time only burglar alarm
    battery charging indicator for
    Electrical Single Line Diagram - Part Two
    Electrical modeling of a nanopore measurement
    LM4910 minimum output noise reduce the output power circuit
    100W AM Valve RF Transmitter circuit