Author Topic: Is EEPROM program voltage timing critical?  (Read 1517 times)

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Offline ThingsTopic starter

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Is EEPROM program voltage timing critical?
« on: January 02, 2013, 10:33:13 am »
Hey guys, I'm kind of new to external EEPROM programming on IC's, and the one I'm using needs an external EEPROM program voltage of 14V.

In the datasheet, it says to enable this 14V, wait 16ms, then disable it again. My question is, does this mean it can _only_ be on for 16ms, or would plugging it in, then "quickly" unplugging it by hand be sufficient?

Cheers,
Dan
« Last Edit: January 02, 2013, 10:37:48 am by Things »
 

Online PA0PBZ

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Re: Is EEPROM program voltage timing critical?
« Reply #1 on: January 02, 2013, 11:42:53 am »
A partnumber or link to datasheet would help...
Keyboard error: Press F1 to continue.
 

Offline grumpydoc

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Re: Is EEPROM program voltage timing critical?
« Reply #2 on: January 02, 2013, 11:44:48 am »
But in general, if that's what the datasheet says to do, then do it.

If you're lucky your device won't program. If you're less lucky you'll probably fry it.
 

Offline JoannaK

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Re: Is EEPROM program voltage timing critical?
« Reply #3 on: January 02, 2013, 12:03:26 pm »
Also, be sure to install current limiting resistor (if possible) and to be sure voltage rise/fall times meet the specs. And note, that too fast rise time (or ringing) can often burn the chip.

So, read the datasheet, documentation of the chip programming and Erratas available. Quite ofthe reading the errata saves the day, or week.

 


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