Buy Real Time Clock Multiplexed Byte EDIP Package. Dallas Semiconductor DSA DS Real Time Clock. Dallas 1PCS DS+ DSA DS DIP IC Dallas Real Time Clock RAM How to test a Dallas DS RTC chip. I just some new ones, they appear to have been made in (date stamp A2) and I installed.

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After making sure the solder was firmly connected it was a matter of inserting a 3v lithium button battery into the holder photo 3replacing the chip on the board and screwing the PC cover back on.

So my question is this, how can one test dss12887 thing to verify that it in fact the battery that is dead? Hopefully they aren’t rebadged old ones. I needed to do something about it! All in all, the repair took about a hour and was pretty straightforward. Originally Posted by lowen.

Pcs Dallas Integrated Real Time Clock DS | eBay

All that remained then was to simply wire up a button battery holder to the exposed metal. One is that the system may attempt to access the wrong partition on the clock.


Not easy when dealing with a computer over 20 years old. Please bid or “Buy it now” only if you agree the price and condition of the product and no argument after the auction ended.

Baterie je nova, ma 3,2V a kdyz merim oscilace na krystalu, tak pri zap kompu ok, ale pri vypnutem konec: Standard Shipping covers full tracking details,Economy Shipping usually doesn’t cover full tracking unless your order amount big. Some of the dallas RTC’s have differant pinouts.

Pcs Dallas Integrated Real Time Clock DS12887

Shipping Policy Very Important: I didn’t know until reading this post that there was a replacement. Zdarec, Nejak se muj komentar neobjevil, tak znovu: My hack job can be seen below.

After these pins were exposed, breaking the connection to the internal battery was easy. I’m assuming it held the configuration data when you first tried it? I may still complain to them about it though. It involved hacking away parts of the chip, then rewiring an external battery onto it.

Zdravim, tak jsem byl nucen nahradu take udelat, muj Falcon ji ma ko, ale ejhle. Feedback will be left to all transaction automatically. Hodne zdaru s rochazenim QXL, dej pak vedet.


I tossed the original since the previous owner had chopped the hell out of it trying to add a battery to it, and I am pretty sure that was what was causing all manner dlalas odd behaviour.

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Fixing a Flat Dallas DS Real Time Clock Chip

We will be good. No errors, just a straight boot-through as it should be. In order to post comments, please make sure JavaScript and Cookies are enabled, and reload the page. Thread Tools Show Printable Version. Zda 2 nebudou baterie a 2 ten 32kHz krystal.

Bateriová náhrada RTC a NVRAM obvodu DS12887 (MK48T87)

Along with the real time clock this chip also holds the CMOS battery, all entombed together in a compact dallaas unit. However the process is not always quite so hassle-free. We usually ship to the confirmed eBay registered shipping address. Akorat jsem odbrousil kontakty te puvodni vnitrni baterie a pripojil misto ni na dratky pouzdro s jinou.

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