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Author Topic: Parellel EPROM working from 4V to 6.4V  (Read 1290 times)

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Offline txescientistTopic starter

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Parellel EPROM working from 4V to 6.4V
« on: March 04, 2014, 09:52:36 pm »
Is there any parallel EPROM that works in 4-6.4 voltage range? Like CDP1802 can work. Is there any version of 27C64 with this operating voltage range?
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Offline peter-h

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Re: Parellel EPROM working from 4V to 6.4V
« Reply #1 on: March 04, 2014, 10:23:36 pm »
Not much 5V logic will run at 6.4V. Well, it will probably run but it will be way over absolute max Vcc. Also with EPROMs you need to be careful because the programming algorithms use elevated voltages so 6.4V might upset it a bit.
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Offline txescientistTopic starter

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Re: Parellel EPROM working from 4V to 6.4V
« Reply #2 on: March 05, 2014, 01:22:40 pm »
Thank you for replay. I have a device that is battery operated (4AA) and eprom is working fine, but datasheet says that operating voltage is 5V+-10%
ROM is NMC27C16QE-45. So is it some wide voltage version or is it just regular EPROM? All roms that I saw, worked on 5V+-10%...
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