Simtek obsolete part reference for STK15C68

Version 1
    Question:

    What is the drop in replacement for Simtek STK15C68 series of parts?

     

    Answer:

    Simtek has made obsolete the following parts long ago. There may not be any drop in replacement for these parts. The nearest part suggested by Simtek is the STK12C68 series. Use of these parts requires minor changes in the layout of the application. Moreover STK12C68 series is in NRND (not recommended for new design) status. The changes to be done for choosing STK12C68 is specified in the attached app note. This may not be a drop in replacement and sometimes changes may have to be done, for those issues we strongly recommend customers to use the latest series ofCypress NVSRAMs such as the CY14E256LA and redesign their boards.

    STK15C68-NF25
    STK15C68-NF25I
    STK15C68-NF25ITR
    STK15C68-NF25TR
    STK15C68-NF45
    STK15C68-NF45I
    STK15C68-NF45ITR
    STK15C68-NF45TR
    STK15C68-PF25
    STK15C68-PF25I
    STK15C68-PF35
    STK15C68-PF35I
    STK15C68-PF45
    STK15C68-PF45I
    STK15C68-SF25
    STK15C68-SF25
    STK15C68-SF25I
    STK15C68-SF25I
    STK15C68-SF25ITR
    STK15C68-SF25TR
    STK15C68-SF35
    STK15C68-SF35I
    STK15C68-SF45
    STK15C68-SF45
    STK15C68-SF45I
    STK15C68-SF45I
    STK15C68-SF45ITR
    STK15C68-SF45TR
    STK15C68-WF25
    STK15C68-WF35
    STK15C68-WF35I
    STK15C68-WF45
    STK15C68-WF45I