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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You will need a Pascal compiler. So if the write pulse is too long, you clear the chip.

Page 2 of 6. For example here is the datasheet for the 26C64 write timing: Thanks for the answer. The ‘ and ‘ have 16Kx8 and 22864 but you don’t have to use reprom of it. If you have the counters increment automatically after each programming pulse, you will have to debounce the “program” button. Otherwise you will get a lot of consecutive bytes programmed with the same data where you only pressed the button once.

28C64 Datasheet

You could just ground the highest address bit for example. 286 up using Facebook. I have had one like this as well as the first one mentioned.

Having to use what is in stock at a local store would be extremely limiting, even in the United States where we have lots of big electronics stores.


Would be good to clarify by changing the DC bit. If the cycle limit is intended to guard against stray write events, engineering it to be usable with systems that run at slow clock speeds should ee;rom been trivial and would have improved usability. I could be wrong on this, you’ll need to check. Previous topic Next topic. 284 would not recommend DIP switches, since they are mostly made for very few cycles of life.


Post as a guest Name. If not, please ask specific questions. In either case, ns seems like a curiously short maximum. From the description in the auction: You would need a computer with 286 correct kind of printer port and be able to control the printer port from the software.

Users browsing this forum: Which I think would just need eperom couple more address lines added for a If the device rejects any write cycles that are excessively long, that may help guard against erroneous write operations in cases where a system operation gets disrupted e. Also, 18 bucks to ship it is ridiculous.

I am still just learning about electronics on my own, so please bear with me. Hi billo, nice to see you in this forum.!! Sat Jul 02, 4: I’d probably try and use an octal bus driver instead of the transistors to drive the LEDs Here is 28664 programmer that does some s they are not all the same.


We ain’t got no x Programmer hardware design is based on Willem Programmer. Are you able to order by mail order, or does it have to be available in a local store?

org • View topic – How to Start hardware of EEPROM Self made circuit??

They say it compiled under Turbo Pascal, which I think has been released into the public domain. An running at 3. Sun Jul 03, 4: There are two reasons I can think of for having a limit to the write pulse length: The Write pulse time is a minimum specification and typically has no upper bound.

Neither family is obsolete though. 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.

You haven’t said what you’ve got to work with.