DS1287 PDF

11 Oct A classic computer article by Terry Stewart (Tezza). Fixing a Flat Dallas DS Real Time Clock Chip. Well – these have the dreaded Dallas DS “all in one” Real Time Clock (RTC) chip with integrated Xtal and battery. Now the battery is dead, configuration is. Dallas DS, DS and Compatibles – External Battery Rework Advice. The following is some extra information that you might find useful if you plan to.

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Reworking the DS / DS RTC chip

Most likely you won’t get a wire soldered properly to it. Should work like a charm. In any case, I turned to hand tools Incidentally, my computer is an Compaq N, which seems to date from about Resubmit your request dz1287 a business or educational e-mail address registered with Maxim Contact your Maxim distributor Thank you for your interest in Maxim.

No errors, just a straight boot-through as it should be. The time now is In most machines this problem is easily rectified, simply requiring an over-the-counter 3 to d1s287 battery replacement on the motherboard. If you feel that you have received this message in error, please contact samples-admin maximintegrated.

Dallas DS1287 DIP Real Time Clock 3pcs

To this day, it’s still chugging along. Part Number Description Key Advantages. Booting up with the reference disk, setting the configuration and clock then rebooting showed the fix worked perfectly! View All My Quotes Close. Our free samples program limits the quantities that we can provide to each customer per calendar year. The 0V-reading tells you that you successfully disconnected the battery.

In fact, go print a copy of it right now. Howe dougnflo [at] comcast [dot] net Kalamazoo, Michigan, U. It doesn’t take too long to figure out that the DS and other, similar modules could be re-energized with a new battery. You can see the result here sorry, the text is in french: All that remained then was to simply wire up a button battery holder to the exposed metal.


Finding a Dallas DS replacement

Results 1 to 10 of Please contact customer support. You may have even read of people doing exactly this, although most accounts I’ve found don’t say just how this is done. Attached the two wires to the exposed pins and put the new lithium cell in the holder. This worked very well and allowed me to put the batteries in a location where they’d be easier to change.

The daily self-discharge rate on some rechargeables is higher than the current taken by the RTC. A couple weeks ago when I finally got around to hooking it up The lowest-priced brand-new, unused, unopened, undamaged item in its original packaging where packaging is applicable.

For all devices, the date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years. When you get past the potting compound and into the terminals, clear away just enough potting resin rs1287 catch the negative battery terminal heading up to the top of the package.

It isn’t a soldering job to be proud of and it’s not too pretty but the connections are quite secure. All in all, the repair took about a hour and was pretty straightforward. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

By using our services, you agree to our use of cookies. Thank You for interest in Maxim Integrated. Internet of Things IoT Platform. Please provide as much detail as possible in your answers. There exists no modern day replacement for these, so fs1287 them is the only option.


This picture shows the second module I reworked in a Model Worked like a charm and would like to thank you and I am very grateful I stumbled on your web site. United States Postal Service: Clock Generation and Distribution. Many other computers from the 90s used them as well. I know the DS is a newer replacement, but is it still in production?

There isn’t a selection process or form to fill out. For anyone who attempts this mod 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. Show More Show Less.

I went through five or six DS modules before deciding that this method wasn’t going to work for me. Modules that are well over the stated lifetime of ten years may continue to keep time for da1287 five years or so. Almost immediately I found an article written by someone who had the same issue and had published a solution. You will remember that I said something about a judicious application of violence on the Model 25 batteries page To give the newly reworked module some more strength, I used hot glue to secure the battery leads dds1287 holder inside the system unit.

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It involved hacking away parts of the chip, then rewiring an external battery onto it. Other pictures illustrate the paneling process and the finished GW module.

Add different End Customer.