EPROMs: Difference between revisions
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| rowspan=" | | rowspan="5" | 27C1000<br>(non-JEDEC) | ||
| rowspan=" | | rowspan="5" | 128 KB | ||
| rowspan=" | | rowspan="5" | 0x20000 | ||
| M27C1000 || 2086 || ST Micro | | M27C1000 || 2086 || ST Micro | ||
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| HN27C301 || - || Hitachi | | HN27C301 || - || Hitachi | ||
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| D27C1000 || - || NEC | | D27C1000 || - || NEC | ||
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== Pinouts == | === 27C1000/27C1001 === | ||
There are two types of 128KB/1Mbit EPROMs — 27C1001 and the non-JEDEC compliant 27C1000. Their pinouts have the A16 and output enable pins switched. An adapter/jumper wire is needed on some EPROM dumpers. The switched pins are marked red in the pinout pictures below. | |||
=== Pinouts === | |||
<gallery mode=nolines widths=240> | |||
M27C1000 pinout.png | |||
M27C1001 pinout.png | |||
M27C2001 pinout.png | |||
M27C4001 pinout.png | |||
</gallery> | |||
Latest revision as of 17:09, July 7, 2023
To do
Random notes I'm taking while dumping EPROMs. Will be a proper article in the future.
Common EPROM types
27C1000/27C1001
There are two types of 128KB/1Mbit EPROMs — 27C1001 and the non-JEDEC compliant 27C1000. Their pinouts have the A16 and output enable pins switched. An adapter/jumper wire is needed on some EPROM dumpers. The switched pins are marked red in the pinout pictures below.
