Massive data turn to 0x00 unexpected using NOR Flash AM29F032B

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cross mob
Anonymous
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Hello, Techteam

We've been using the NOR Flash AM29F032B for several years on our products. A strange event has been occurred twice during these years. Data of some address units all turned into 0x00 when the programm only read the flash. The throuble address units are as follow:

Product No.1

0x1--0x4FE40

0x4FE81--0x4FF40

Product No.2

0x1--0xF4240

0xF4301--0xF431E

We are sure that our timing design is correct as the datasheet informed. Could you please explain the reason for this event? Thank you very much!

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