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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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. Sign up or log in Sign up using Google. It looks like this was done with a PC, but really, it could be modified to work with any computer.
You would need a computer with the correct kind of printer port eeptom be able to control the printer port from the software. For example here is the datasheet for the 26C64 write timing:. No registered users and 0 guests. Thanks for the answer. We ain’t got no x I could be wrong on this, you’ll need to check.
Fri Jul 01, 5: There are two reasons I can think of for having a eeeprom to the write pulse length: Select a forum Fri Jul 01, 4: It looks like the ‘ and ‘ also allow counting down as well as up.
Sat Jul 02, 4: Sat Jul 02, 9: You haven’t said what you’ve got to work with. Hi billo, nice to see you in this forum.!! We don’t NEED no stinking x86!
If the part uses dynamic latches to hold the address, those latches may only be able to hold their value for a certain length of time. Otherwise you will get eperom lot of consecutive bytes programmed with the same data where you only pressed the button once. It has been enhanced many times since the original design came out by many folks around the world.
From the description in the auction: Programmer hardware design is based on Willem Programmer Also, 18 bucks to ship it is ridiculous.
Sat Jul 02, 5: It’s a an entirely different interface with no similarity to 28xx.
Mon Dec 31, 8: You could just ground the highest address bit for example. I have see that.
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. You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum.
Which I think would just need a couple more address lines added for a For example you would need a seperate transistor, LED, transmission gate, pull down resistor, and so on for each data line.
Fri Jul 01, 3: Sign up using Email and Password. You would have to write your own software to go with it. A bit of Googling will turn up lots of do it yourself programmers, complete with the software to run them.
EEPROM datasheet & applicatoin notes – Datasheet Archive
You will want presetable counters like perhaps the 74xx I’d probably try and use an octal bus driver instead of the transistors to drive the LEDs Here is another programmer that does some s they are not all the same. Fri Jul 01, 9: The ‘ and ‘ have 16Kx8 and 32Kx8 but you don’t have to use all of it. Notice there is no upper bound for any of the chip select or write timing. Page 2 of 6. The address needs to be held for an entire write cycle, so any dynamic latches would need to be able to deal with that.