Buy EPROM K-Bit 32K x 8 ns Pin DIP. 27C 27C 27C 27C 27C M27CBF1. M27CBF1. The Microchip Technology Inc. 27C is a CMOS K bit electrically Programmable Read Only Memory (EPROM). The device is organized as 32K words by. I believe the 29Cxxx series is now mostly flash memory. Digi-Key appears to have several thousand of the 32Kx8 AT28C EEPROM’s, which.

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It doesn’t need to be pin-compatible, although that would be nice. I like the Nexys2, personally, and the books by Haskell and Hanna look pretty good for bringing newbies up to speed. Not an ‘answer’ per se, just an opinion: However, it struck me that you must be spending a lot of time getting them to the point where they understand what they’re hooking up, and why.

Would the 28C family be a good place to look? One more comment in the form of an actual answer: Home Questions Tags Users Unanswered. The goal of my course, which is the introductory and only architecture course at a liberal arts college, is for students to understand all the way down to the gate level how computers work, not to directly prepare them eprrom industry. Could you let me know why you think a FPGA approach would be better and point me to any educational material?


Ellen Spertus 2 9 I don’t think you’re doing your students any favors by getting them to build stuff out of series TTL in this day and age. Specifically, it should be reasonably priced, reliable, easily available and likely to remain so.

27C EPROM Datasheet

Can you tell me anything about it? The users who voted to close gave this specific reason: It’ll put the students in touch with the hardware in a way that an anonymous microprocessor or FPGA chip can’t match.

I believe the 29Cxxx series is now mostly flash memory. Perhaps the limited available time could be used more productively with modern hardware. I find the hands-on work, including the debugging, to really get this information across to all levels of students. Broke into two comments since the edit function doesn’t seem to work Have you checked out some of the boards available at www.

You didn’t say which package you are using, I assuming it is a pin DIP. The instructions are read by a low-speed TTL computer they build. JohnMiles, could you elaborate? There are still a few parallel flash chips available in DIP, e. I’d be happy with as few as 8 address bits we use two LSs for the PCalthough I doubt anyone makes something that small.


I don’t have experience with FPGAs. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. It is a little cheaper in price, and also in stock.

What’s a good EEPROM replacement for a 27C/29C? – Electrical Engineering Stack Exchange

There is also a 8Kx8 version of the same chip with a compatible pinout unused address lines are no connects. I’ve never used the 28C family. This question appears to be off-topic.

Robustness to student wiring mistakes would be great. I’ve been using the pin DIP package. You could also try Jameco.

Lot 10X eprom 27C256 or 27256 + Flash programmation included

Instead, describe your situation and the specific problem you’re trying to solve. John Miles 3 5.

I also don’t care about speed. I hope to inspire some to grad school.

They tend to be higher capacity than eeprom devices, so more address lines to tie but otherwise equivalent to eeprom for your purposes.