The DS, DS, and DS12C real-time clocks (RTCs) are designed to be direct replacements for the DS and DS Data Sheet. Subscribe. DS datasheet, DS circuit, DS data sheet: DALLAS – Real Time Clock,alldatasheet, datasheet, Datasheet search site for Electronic Components . DS Datasheet, DS PDF, DS Data sheet, DS manual, DS pdf, DS, datenblatt, Electronics DS, alldatasheet, free, datasheet.

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Should work like a datssheet. There are no provisions for one. Here Best Regards Emmanuel. Now the battery is dead, configuration is lost after relatively short time again and you get error-codes constantly. At that point you wish you could add an external battery.

My old computer has been out es1287 action for months, but this week I got it going again by following the instructions on your webpage “Reworking the DS RTC chip”.

So you have my thanks and gratitude for putting that idea on the web. Most likely you won’t get a wire soldered properly to it. If you have a multimeter test the voltage on pins 16 and 20 before and after. I soldered a 22 solid wire to each of the darasheet holder pins, then glued the holder to the DS case using model airplane plastic datashedt.


Curiosity killed that cat. A couple weeks ago when I finally got around to hooking it up Possible Results Reworked chip inside a Mod.

Reworking the DS / DS RTC chip

Thank you very much for putting this mod on your web site. Care for the polarity! It works like a champ! Can you imagine my amazement and relief when I discovered your web site describing the DS rework process.

I used a medium sized flat file Datadheet the battery holder! Then the battery and xtal are placed atop of the chip, connected to the pins and everything is covered with a pretty rigid protective compound.

DS1287 – DS1287 Real Time Clock Datasheet

Have a look at the graphics below. Incidentally, my computer is an Compaq N, which seems to date from about Attached the two wires to the exposed pins and put the new lithium cell in the holder. Soldered and used a CR battery with holder on top of the You can see the result here sorry, the text is in french: It won’t do it no good and may result in early death of that part due to excessive internal heating. On March, 23rd, Chris xrisl [at] yahoo.

Worked like a charm and would like to thank you and I am very grateful I stumbled on your web site. The case is usually pretty much “solder-resistive” because of the anti-corrosion plating. Then circumstances kept me from working with it until now William Walsh did the DS-Rework to get an external battery to it as well.


I discovered that the RTC chip was dead.

You did a great job! I just want to tell you that I succesfully used your DS rework How-to.

The 0V-reading tells you that you successfully disconnected the battery. A really new, fresh and unused chip is hard to get. On January, 7th, Emmanuel Da Piedade emmanuel. I could not have gotten my Compaq DeskPro e back to clock life back without you!

These are intended for short-term use with strong charge and discharge intervals – not for long-term storage datahseet a comparatively small discharge rate. Without that webpage, I would never have thought of repairing it like that! Even its successor DS is pretty hard to get and darn expensive.

Don’t use rechargeable batteries. All described modifictions apply to this chip as well.