cancel
Showing results for 
Search instead for 
Did you mean: 

The impact of continuous writing on the EEPROM IC

1.I previously developed a product that, due to a program bug, continuously wrote to a fixed address in the EEPROM  IC (M24C64-F) every 25ms while in standby mode. After about 1 to 2 years of the product being sold, we got feedback from those issue that certain control parameters in the EEPROM IC (not the aforementioned fixed address) were being altered. We conducted tests on the affected products from the issue (e.g., power interruptions, noise interference, normal power ON/OFF, etc.), but we were unable to reproduce the issue. Could somebody tell under what conditions the control parameters in the EEPROM IC could be altered?

2.Is the process of writing to EEPROM the most frangible time for an EEPROM IC? if so, power interruption, electrical noise or other interference occurs at this time, will it cause other address data to be modified?

11 REPLIES 11

Hello unsigned_char_array:

Maybe abnormal power supply is a way of investigation, but I haven’t tested the phenomenon of EEPROM being changed yet

You have to ensure that you don't initiate a write until the power is stabilised, and also when the power dies down.  You may chek how long it takes for vcc to godown below the specified threshold write voltage for eeprom.  You may monitor the power souce swich off to trigger , so that a new write is not initiated.

If you feel a post has answered your question, please click "Accept as Solution".