This little electronic PCB replaces most Dallas/Odin chips and integrates a slot for a lithium battery to make it user replaceable
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Dallas RTC Chip Replacement - DS1287 / DS12887 / DS12B887 (using BQ3285) Battery (CR1220) NOT Included !!! Many old PCs use an solid IC for the management of the system clock, these integrated usuall…
Read More…Dallas RTC Chip Replacement - DS1287 / DS12887 / DS12B887 (using BQ3285)
Battery (CR1220) NOT Included !!!
Many old PCs use an solid IC for the management of the system clock, these integrated usually report the wording DALLAS or ODIN on the container. These ICs contain a non-rechargeable lithium battery inside for maintaining the DATE and TIME information.
Unfortunately these chips are not eternal!
When the battery runs out, the device no longer works and can generate errors at boot or even fail. Furthermore, the backup battery is not replaceable. The entire chip must be replaced. These chips are practically unobtainable because they have not been used for decades, even if they are found it is likely that they do not work well because they are too old.
HERE IS THE SOLUTION TO THE PROBLEM !!!
This little electronic PCB replaces most of the above chips and integrating a slot for a lithium battery makes the functionality practically eternal, simply replace the battery to restore a old PC for years!!
The BQ3285 chip used here is compatible with the following old chips:
Some examples of computers using these chips:
Tested on IBM PS/1 2011 before sending.
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