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HP's Clarke – 4-Bit CPU/LCD Driver/Memory Controller
(
grack.com
)
5 points
by
mmastrac
on Dec 2, 2021
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2 comments
mgsouth
on Dec 2, 2021
[–]
Specs for the 1LT8 chip used in the HP48SX. This is a text file without drawings. An excellent PDF scan of the original (including drawings) is at
https://literature.hpcalc.org/items/2117
naikrovek
on Dec 2, 2021
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parent
[–]
> The inner leads have changed to allow 1LT8 to have 147 pins in a reasonable die size of nnnn by sorrynnnnnons.
can't tell is that was redacted in the typed document or is a very bad OCR error.
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