Flash Memory "A-B" switch (44 pin PSOP)

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Flash Memory "A-B" switch (44 pin PSOP)

Postby beyerch » Tue Jul 10, 2018 8:30 am

Opened up another project I did back in '06.. This one is a circuit that allows you to replaced a 44 pin PSOP flash (e.g. Intel 28F400) with multiple chips so that you can switch between them. The switch watches for line activity to ensure that you do not switch over in the middle of a Read / Write operation, etc.

Might be of value for someone who needs to experiment with emulation or simply rotating calibrations/software, etc.

Hope it helps.


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Re: Flash Memory "A-B" switch (44 pin PSOP)

Postby antus » Tue Jul 10, 2018 10:00 am

Cool, thanks for posting that up. I do see interest in such a thing from time to time.
Have you read the FAQ? For lots of information and links to significant threads see here: viewtopic.php?f=7&t=1396

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