AT28C64, 28C64 Datasheet, 28C64 64K ns Parallel PLCC EEPROM Datasheet, buy 28C Find Datasheet EEPROM related suppliers, manufacturers, products and specifications on GlobalSpec – a trusted source of Datasheet EEPROM. Compatible with the Serial Peripheral Interface. (SPI) bus. • Memory array. – 64 Kb (8 Kbytes) of EEPROM. – Page size: 32 bytes. • Write.

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28C64 Datasheet

It looks like this eeeprom done with a PC, but really, it could be modified to work with any computer. Sign up using Email and Password.

Users browsing this forum: An example that I have worked with is this one cva. It looks like the ‘ and ‘ also allow counting down as well as up. That’s not a Willem programmer. Here’s parallel port programmer for a which could probably be adapted to the would be simpler, don’t need the The ‘ and ‘ have 16Kx8 and 32Kx8 but you don’t have to use all of it. Would be good to clarify by changing the DC bit.


It has been enhanced many times since the original design came out by many folks around the world. Sign up or log in Sign up using Google. Hello, I have see that.

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Absolutely yes If you don’t set things up correctly with both the hardware and the software you might end up with the computer trying to talk to the EEPROM at the same time the EEPROM is trying to talk to the computer, in that case they might short each other out. For example you would need a seperate transistor, LED, transmission gate, pull down resistor, and so on for each data line. It’s the total price that matters on eBay. How to make it should be obvious from the schematic.

In either case, ns seems like a curiously short maximum. Sign up using Facebook. If that were the intended purpose, however, I would expect a specification that would indicate that write pulses within a certain range are guaranteed to be accepted, write pulses that are outside a larger range would be guaranteed to be ignored, and those between the two ranges might arbitrarily be accepted or ignored.

Programmer hardware design is based on Willem Programmer Willem type then. I have eepeom one like this as well as the first one mentioned.

Pls tell how to make this, as where to write this program which type of computer is need.?? I do not think there ever was an official product called the Willem programmer.

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An running at 3. You could just ground the highest address bit for example. Otherwise you will get a lot of consecutive bytes programmed with the same data where you only pressed the button once.

I am still just learning about electronics on my own, so please bear with me. I could be wrong on this, you’ll need to check. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Home Questions Tags Users Unanswered. Sun Jul 03, 4: You would need a computer with the correct kind of printer port and be able to control the printer port from the software. Notice there is no upper bound for any of the chip select or write timing.

Fri Jul 01, 3: Are you able to order by mail order, or does it have to be available in a local store? The program is written in Pascal. This meant they could not work down to DC.