M95M01-A125 EEPROM data corruption by power cut off

[SHiroshi19]

Dear Sir

 

We use M95M01-DWDW3TP/K EEPROM in device to store log data

If power is cut off during its write cycle,  the data in writing address will become corrupted as I known.

In other hand, will other data, which was successfully written in other address, become correpted? 

What I am concerned about is the impact to other existing data, when power cut off in the data writing process

 

For an expample, there are "address A" (successfully written) , "address B" (will written log data in it), "address C".(successfully written) .

If power was cut off when writing data into address B, is the content in address A and C corrupted too or not?   

 

Waiting for your reply

Regards

 

[Andrew Neil]

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@SHiroshi19 wrote:

In other hand, will other data, which was successfully written in other address, become correpted? 

---

No.

But that doesn't account for misbehaviour of your software if you let it access the memory during a power failure...

So your system design should ensure that this can never happen:

• Have power-fail/brown-out detection;
• Ensure sufficient backup capacity to complete any ongoing memory access;
• Block memory access once done;
• etc, etc, ...

[SHiroshi19]

Dear Neil 

I got it.

Thank you for your reply and adivice.

 

[Roger SHIVELY]

Hello @SHiroshi19 ,

 

This post has been escalated to the ST Online Support Team for additional assistance.  We'll contact you directly.

 

Regards,

Roger