designing a 32 bit counter

as part of a course project/assignment we have been given an assignment to design a 32 bit pulse input counter with the features given below:

1. Counter width: 32-bit
2. Counter should have a reset input. An OFF to ON transition on the ^RST input resets the pulse counter to zero.
3. Frequency of incoming pulses: 10 KHz (max)
4. Minimum pulse width: 3us. (This should take care of noise filtering and should avoid counting any pulse having pulse width lesser than 3us.)
5. Logic High voltage of incoming pulses: +5V
6. Logic Low voltage: 0V.
how can this be designed using a microcontroller? can u respond particularly to the solutions of points 3 and 4.

how can this be designed using a microcontroller? can u respond particularly to the solutions of points 3 and 4.

Click to expand...

Microcontroller? With the listed specs, absolutely.

Pick a microcontroller with an edge triggered interrupt input. In the program, setup an input so it generates an interrupt on the desired edge (risng or falling edge). Verify if the pulse is still present 3usec into the interrupt service routine. A few NOPs (no -operate instructions) should be sufficient to generate the delay. After verifying the presence of the pulse, increment the 32-bit counter. If you're using an 8-bit micro, then that would be a 4-byte register array.

The main program loop can be used to constantly refresh an LED display of the 32-bit count and check the reset input.