Programmable Periperal Interface

Discussion in 'General Electronics Chat' started by Dritech, Jun 14, 2013.

  1. Dritech

    Thread Starter Well-Known Member

    Sep 21, 2011
    756
    5
    Hi,

    Can the Z80PIO be interfaced with an 8051 micro-controller? or is it specified to be used only with the Z80 CPU?
     
  2. LDC3

    Active Member

    Apr 27, 2013
    920
    160
    As you know, the Z80PIO was make by the same company as the Z80, so it was designed to work together. You will need to check the timing diagrams to see if the address and data lines are properly provided to address and send/retrieve data from the Z80PIO using the 8051 MCU. I believe that the lower address lines and the data lines are multiplexed.
     
  3. Meixner

    Member

    Sep 26, 2011
    116
    21
    Intel made an IC similar to the Z80PIO called the 8255 It was designed to interface to Intel processors. I have never used one but I have heard they are somewhat difficult to configure.
     
  4. Papabravo

    Expert

    Feb 24, 2006
    10,137
    1,786
    You can always bit bang the interface. It is not as fast but it can be made to work.
     
  5. Dritech

    Thread Starter Well-Known Member

    Sep 21, 2011
    756
    5
    Thanks for the help. Where can I find the datasheets of these two ICs please? Because the datasheet of the Z80PIO that I managed to find is only 4 pages and does not give any specs such as power dissipation etc. And for the Inter IC, I only managed to find the CMOS version and not the standard 8255 IC.
     
  6. LDC3

    Active Member

    Apr 27, 2013
    920
    160
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