Digital Clock With Crystall Oscillator

Discussion in 'Homework Help' started by talesrm, Jul 10, 2018.

  1. talesrm

    Thread Starter New Member

    Jul 10, 2018
    Hello guys. I have a project to do and dont know where to start.

    I want to do a Digital Clock using a crystal oscillator of 25,175 Mhz. Someone can help me with some diagram or programming
    i'm using Quartus 2 9.0 and a programmable board from Altera with a crystal oscillator built in.


    How can i connect this board to a educational kit called Exsto XD201 (brazilian company)
    foto_20180129-063504-XD201-1.png Kit Didático EXSTO XD101.png

    Someone can send me a circuit schematic? I'm lost here....
    I can only use ttl 74 family.

    p.s.: i shouldn't use NE 555
  2. danadak

    Well-Known Member

    Mar 10, 2018
    Are you trying to use the Exsto to display the clock output ?

    If so the Exsto must have an example of using counters or timers connected to
    7 segment LED displays......?

    I am assuming since you have the Altera board and are using Quartus that
    you know how to use config counters inside CPLD and output them to pins ?

    Regards, Dana.
  3. talesrm

    Thread Starter New Member

    Jul 10, 2018
    I'll buy some 7 segment LED displays . I'll only use the protoboard and cristal oscillator that its built in Exsto.

    And yes, i know how to config the CPLD and put to pins. But thats all, i only learn the basic stuff.