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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I also don’t care about speed. Not 27c56 ‘answer’ per se, just an opinion: Instead, describe your situation and the specific problem you’re trying to solve.

Can you tell me anything about it? I don’t have experience with FPGAs. Specifically, it should be reasonably priced, reliable, easily available and likely to remain so.

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.

Could you let me know why you think a FPGA approach would be better and point me to any educational material? I’ve been using the pin DIP eeprom.

I hope to inspire some to grad school. You could also try Jameco. Perhaps the limited available time could be used more productively with modern hardware. sprom


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

27c265 JohnMiles, could you elaborate? By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The instructions are read by a low-speed TTL computer they build.

I’ve never used the 28C family. I believe the 29Cxxx series is now mostly flash memory. I find the hands-on work, including the debugging, to really get this information across to all levels of students.

It doesn’t need to be pin-compatible, although that would be nice. There 27f256 also a 8Kx8 version of the same chip with a compatible pinout unused address lines are no connects. There are still a few parallel flash chips available in DIP, e. 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 for industry.

It’ll put the students in touch with the hardware in a way that an anonymous microprocessor or FPGA chip can’t match.

227c256 They tend to 27c56 higher capacity than eeprom devices, so more address lines to tie but otherwise equivalent to eeprom for your purposes. I like the Nexys2, personally, and the books by Haskell and Hanna look pretty good for bringing newbies up to speed.


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. Would the 28C family be a good place to look?

27C256 – 27C256 256K EPROM Datasheet

You didn’t say which package you are using, I assuming it is a pin DIP. The users who voted to close gave this specific reason: John Miles 3 5. One more comment in the form of an actual answer: Broke into two comments since the edit function doesn’t seem to work Have you checked out some of the boards available at www. 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.

It is a little cheaper in price, and also in stock. Home Questions Tags Users Unanswered.

Ellen Spertus 2 9 Robustness to student wiring mistakes would be great. This question appears to be off-topic.