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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Datasheets search archive of electronic components datasheets

After the dust cleared Then circumstances kept me from working with it until now I appreciate it greatly. These are intended for short-term use with strong charge and discharge intervals – not for long-term storage with a comparatively small discharge rate.

A really new, fresh and unused chip is hard to get. Rs1287 use rechargeable batteries. If you have a multimeter test the voltage on pins 16 and 20 before and after. William Walsh did the DS-Rework to get an external battery to it as well. Should work like a charm. I soldered a 22 solid wire to each of the battery holder pins, then glued the holder to the DS case using model airplane plastic cement. I could not have gotten my Compaq DeskPro e back to clock life back without you!


Possible Results Reworked chip inside a Mod. Howe dougnflo [at] comcast [dot] net Kalamazoo, Michigan, U. I discovered that the RTC chip was dead. 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. Attached the two wires to the exposed pins and put the new lithium cell in the holder.

Incidentally, my computer is an Compaq N, which seems to date from about My old computer has been out of action for months, but this week I got it going again by following the instructions on your webpage “Reworking the DS RTC fs1287.

I used an iron file that was about the exact width I needed and just slowly went back and forth about 50 times until I saw the metal and then used sandpaper the rest of the way. You did a great job! Here Best Regards Emmanuel. On March, 23rd, Chris xrisl [at] yahoo. Don’t ever solder directly on a coin-style Li-Cell.

Dallas Semiconductor DS Module Battery Replacement

All described modifictions apply to this chip as well. Now the battery is dead, configuration is lost after relatively short time again and you get error-codes constantly.

Worked like a charm and would like to thank you and I am very grateful I stumbled on your web site. Curiosity killed that cat. Soldered and used a CR battery with holder on top of the So you have my thanks and gratitude for putting that idea on the dataeheet. Go with the hot glue.


Most likely you won’t get a wire soldered properly to it. The daily self-discharge rate on some rechargeables is higher than the current taken by the RTC. Thank you very much for putting this mod on your web site. A couple weeks ago when I finally got around to hooking it up Care for the polarity! I just want to tell you that I succesfully used your DS rework How-to. At that point you wish you could add an external battery. It works like a champ!

You can see the result here sorry, the text is in french: It sets too fast! For anyone who attempts this datadheet It won’t do it no good and may result in early death of that part due to excessive internal heating. Note the battery holder! There are no provisions for one. Even its successor DS is pretty hard to get and darn expensive.

Can you imagine my amazement and relief when I discovered your web site describing the DS rework process.