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I am trying to use a dataflash memory that requires a voltage of 2.7 to 3.6. Before I was supplying it with too little voltage. Then I supplied it with 5V. Could either of these cause damage to the chip?

The part number is W25P80 and the datasheet is here.

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    \$\begingroup\$ You really should put the part number and link to the data sheet. \$\endgroup\$ – Brian Carlton Mar 16 '11 at 0:39
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    \$\begingroup\$ Alright, I edited my post. \$\endgroup\$ – 200ok404notfound Mar 16 '11 at 0:56
  • \$\begingroup\$ Why the downvote? \$\endgroup\$ – 200ok404notfound Mar 16 '11 at 0:57
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That's what the "absolute maximum ratings" part of the data sheet is for.

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  • \$\begingroup\$ For the supply voltage it says -0.6 to +4.0. So how likely is it? \$\endgroup\$ – 200ok404notfound Mar 16 '11 at 0:39
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    \$\begingroup\$ The longer you exceed the maximum ratings for and by what degree determine the damage caused. Each chip is different. \$\endgroup\$ – Toby Jaffey Mar 16 '11 at 0:41
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Yes.

5V may have killed the chip. Too little voltage will make the chip's behaviour unpredictable, but won't harm it (though low voltage during write/erase might damage the data).

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