Re: LF: 2 Empty Surface Mount Chip Sockets...
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At 10:28 AM 11/19/96 -0500, you wrote:
>I recently opened my calculator and peeled away the RF shielding (silver
>metalic paper) and to my suprise there were two empty surface mount
>sockets!!! One of them was by where that removable module is and the other
>was to the right of that. The one by the module had the chip code
>(T0328-080C), and the TI identification code of U9 with the locater to the
>right and the one to the right of that socket just had a TI identification
>code of U10R.
>
>Does anyone have an idea what these empty treasures might be for? I was
>hoping they might be for memory upgrades so I am going to go out on the web
>and see what I can find out about the one with the chip code. I'll keep you
>updated on my research.
>
>----------CiebieraP@aol.com-----------
The empty socket labeled U10R is the sopt for the possible memory upgrade.
The chip right above it is the 92's 128K SRAM chip ( TC551001BFTL-85L ).
The chip that fits in U10R with the correct pin assignments is the
TC551001BTRL-85L, I have ordered one of these chips and am going to put it
in to see what'll happen. See Upgrade Ti-92 RAM in the ti-hardware list.
Bill Stysaick
wjs12@cornell.edu
References: