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Recommend Parallel EPROM and Programmer Please

Recommend Parallel EPROM and Programmer Please

Recommend Parallel EPROM and Programmer Please

I got tasked to build a suitcase demo for our marketing guys. Absolutely has to go to layout tomorrow evening. There is no time for a micro.
-I have 4 discrete inputs which must be mapped to 5 digital outputs...this is not high speed at all..the inputs come from analog comparators.
-The outputs go to a Supertex fan controller IC demo board to control a high voltage fan.
-Looking at the truth table, no simple combination of logic gates is going to map the four comparator outputs to the 5 fan control inputs.
-I want to use a parallel eeprom--the inputs go to the address inputs and the 5 digital outputs come off the data pins.

But I havent touched a parallel eprom since they were using UV and 27C32s.

Can anyone recommend a commodity non-registered parallel eeprom and a low cost programmer for it?

RE: Recommend Parallel EPROM and Programmer Please

This has to go to layout tomorrow and you're asking for component suggestions that will take at least a week to get through mail order?

Dan - Owner

RE: Recommend Parallel EPROM and Programmer Please

??? Dont need to a buy a chip to do a layout??? Anyway, we get our parts overnight from Digikey if we call by 4pm...I dont understand your question

RE: Recommend Parallel EPROM and Programmer Please

I don't recall any at the moment. I'd suggest you ask your exact question of Dky's tech support. They're quite helpful and can probably answer that for you.

Keith Cress
kcress - http://www.flaminsystems.com

RE: Recommend Parallel EPROM and Programmer Please

I think you'll have to go to a museum to find both EPROM and corresponding programmer.
Nobody uses them anymore, it's all Flash these days.
That being said, use an nvRAM, either the battery-backed type or the EEPROM-backed type (Cypress).
No need to program, just store that values you need, they work just like standard SRAMs, but keep the content when powered off.


RE: Recommend Parallel EPROM and Programmer Please

Would a micro PLC fit the bill? If so, no layout is needed then.


"It's the questions that drive us"

RE: Recommend Parallel EPROM and Programmer Please

Good suggestion, but there are some analog outputs that need to be buffered and filtered. We found that Atmel makes parallel output eeproms which implement the truth table. We just need to find a generic programmer to put some data into it--have to do that tonight.

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