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RickyDean

Ide card build issue.

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Well, I removed the dead battery from the Benchmarq bq4847ymt, and after scraping some of the plastic/epoxy, found that it was a re-marketed bq4845. So TI as well as Dallas and the Chinese all did the same thing, re-marketed their old chips as battery backed rtc chips by adding to the old stock. Who da thunk it!! Who da thunk it!!!

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42 minutes ago, RickyDean said:

Well, I removed the dead battery from the Benchmarq bq4847ymt, and after scraping some of the plastic/epoxy, found that it was a re-marketed bq4845. So TI as well as Dallas and the Chinese all did the same thing, re-marketed their old chips as battery backed rtc chips by adding to the old stock. Who da thunk it!! Who da thunk it!!!

To save lots of future battery grief, buy a bunch of the bq4845s and add your own battery holder and relevant circuitry on top. Makes for something a lot cleaner for long-term use than the borged bq4847s. . .

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Posted (edited)

Well, now I have a question. Find two pictures, one of the pinout of a Dallas DS1251Y and a BQ4852- the 512k rtc that can be placed on the ide card (that's what this topic is all about, no). Can the Dallas chip be substituted by placing it into corresponding pins on the bq4852 rtc location, taking into account that the vcc would need to be run forward from the Dallas chip to the bq vcc pin for power?

bq4852.jpg

DS1251Y.jpg

Edited by RickyDean
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3 hours ago, dhe said:

Bump for Ricky,

  Did you finally win this one, or are you between rounds at the moment?

Between rounds, have to purchase some new chips and have to find the correct ones. The ten sram chips I ordered, are slightly larger and the pins don't quite match up without doubling them down under the body of the sram chip. Can be forced in place, but I will also need to order some logic chips, and need to get the right kind, at an affordable price. Been trying to get Bill's EVPC tested and been doing a lot of welding and fabricating body mount brackets for the frame upgrade I'm doing on my 05 Avalanche. So slowly getting there, had to work today on trying to repair my house AC, as it seems one of my copper pipe solder joints vibrated last season and opened a small leak, and I can't get it to seal, so tomorrow, I'll have to take a hour one way trip to Brunswick Ga, to get a new pipe made. The grandkids are coming next Saturday and got to keep them cool for the nights.

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Understood, I've had no auto mechanic mentoring, so I'm pretty dumb on that side. My daily drive is a 96 ford ranger, sadly not the 4L or AWD. 250K - I think it needs a new front bearing seal which is pricey as the whole engine has to be pulled. And since your doing that, and it's never had a new drive chain....

 

Of course my wife complains about how much it will cost, but the cost doesn't touch the cost of a new ford ranger, the insurance on said, the tags, taxes and title, and it did just help me haul 150 pounds of chain link fence to the dump! 😃

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When I worked overseas, I bought a group of projects, and I am slowly working them. But the Avalanche was a recent aquire and it was 2wd, with a locked motor. I have a 4x4 Ford Excursion frame and it is very strong, so I made the decision to take 7.100 inches out of its wheelbase and ready it to move the body over, well on its way there. It will probably sport a diesel at some point, but will start with a 5.3 LS, 4L80E, and have the luxuries a fully dressed 05 Avalanche has. But enough of this idle boasting, let's get back to the ide cards of the day. Ha...ha.

Edited by RickyDean
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