Interfacing SRAM memory with PIC18F87j11

Discussion in 'General Electronics Chat' started by hn123, Sep 13, 2012.

  1. hn123

    Thread Starter New Member

    Sep 1, 2012
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    hi,

    i am design one simple Circuit which i wants to interface SRAM with My PIC controller.
    I already used for it some logic IC 74CH138 & 74CH373 .and I used IS61LV256AL.last one is memory IC.

    I interface this but still i have some problem with control pin .

    I attached here with my schematic with my this post.
    Please guide me for this.
     
  2. t06afre

    AAC Fanatic!

    May 11, 2009
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    Can you post your schematic as pdf. I can not open it
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    no files will open .sch files ???
     
  4. hn123

    Thread Starter New Member

    Sep 1, 2012
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    0
    hi,

    its a file of Kicad Software
     
  5. t06afre

    AAC Fanatic!

    May 11, 2009
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    That does not help me at all. Please post your schematic in a format that is esy to read for all Like pdf or png
     
  6. ErnieM

    AAC Fanatic!

    Apr 24, 2011
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    Even using Kicad your schematic does not open properly. A Kicad sxchematic depends on the libraries it was created with.

    It is always best to show your example in a format that requires no special additional files or programs.

    It seems the data comes direct from the PIC, and the full 16 bit address comes from an 8 bit port where the high byte is latched by the 74LS373. It's not clear what the intent of the 74LS373 is, that's a rather large chip for one bit in and one bit out.

    What is your method for controlling WE OE and CS on the memory?
     
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