General > General Technical Chat

2716 ROM replace, can I use flash?

(1/2) > >>

johnsonlam:
Hi,

Got an old Apple //e which keyboard ROM seems have some problem, it's an 2716 ROM but it's now obsolete, don't want to buy the Chinese old one, as they maybe fake or fail soon. Remember see some post that can replace with 27C256 (which I have an ATMEL OTP), but how to do this? Seems need an adapter or some pins modified, please advise.

Thanks in advance.

Rgds,
Johnson.

edavid:
You can use a 28C16, no adapter needed.

johnsonlam:
Seems it's obsolete and can't buy from Digikey and Mouser, only AliExpress and eBay have old stock  :(

terminus:
Hi Johnson,

did you try to reprogram it? it could simply be beyond the data retention period.

wbr
victor

Benta:
For an old Apple, it probably a DIP package. Choose some SOIC/SSOIC EEPROM or Flash, use an SO-to-DIP adapter PCB (can be bought ready-made) and you're done.

Navigation

[0] Message Index

[#] Next page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod