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Author Topic: TI 84 Plus SE ASICs?  (Read 7336 times)

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Offline ralphdspam

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TI 84 Plus SE ASICs?
« on: September 21, 2011, 02:33:17 am »
Hi.  Recently, I have been interested in hardware mods for the 84 Plus SE.  Do we have any documentation of the different pinouts of the ASICs?

Thanks.  :)
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Offline thepenguin77

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Re: TI 84 Plus SE ASICs?
« Reply #1 on: September 21, 2011, 06:23:04 pm »
I've never seen one. I know critor made a few for the Nspire back when they were trying to hardware hack it, but I've never seen any for the 84+.

I could be entirely wrong of course ;D The specific people I could see having one would be critor, drDnar, and kerm, with kerm being the most likely. Hopefully though, someone will post a pinout for you, but the chip itself has no official documentation.
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Offline DrDnar

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Re: TI 84 Plus SE ASICs?
« Reply #2 on: September 21, 2011, 06:28:07 pm »
As the term Application-Specific implies, the chip is only manufactured for TI's graphing calculators. They don't publish a data sheet. Kerm is the best bet for that kind of information. I may, in the next few weeks, be able to provide micrographs of the ASIC, but that's a long way from a pinout.

The TI-84+ and the TI-84+SE appear to use exactly the same ASIC; only the actual flash chip differs. Be aware that there are at least three known revisions of the ASIC, whose pinouts may all be quite different.
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Offline ralphdspam

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Re: TI 84 Plus SE ASICs?
« Reply #3 on: September 23, 2011, 05:38:11 pm »
Quote from: DrDnar on September 21, 2011, 06:28:07 pm
As the term Application-Specific implies, the chip is only manufactured for TI's graphing calculators. They don't publish a data sheet. Kerm is the best bet for that kind of information. I may, in the next few weeks, be able to provide micrographs of the ASIC, but that's a long way from a pinout.

The TI-84+ and the TI-84+SE appear to use exactly the same ASIC; only the actual flash chip differs. Be aware that there are at least three known revisions of the ASIC, whose pinouts may all be quite different.
I guess I'll get my oscilloscope...
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