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Emulated Eeprom | Cypress Semiconductor

Emulated Eeprom

Summary: 2 Replies, Latest post by Bob Marlowe on 21 Oct 2016 03:43 AM PDT
Verified Answers: 1
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sezeraslan93_1812381's picture
1 post

I am using CY8C4124LQI-443 Psoc 4100 family in my project. I need to use emulated eeprom. There is an example in psoc. But I have problem when I use. I want to read the data written on eeprom after restart the system.


I use this command CY_GET_REG8(adress); or Data = (*((uint8 *) (adres)));. Data read is 0. 

What is the problem of this? Can anyone explain the detail of this? (I think after I close the system, Data written is deleted by the microcontroller.?)


Thanks for helping. 

Malik Bathusha's picture
2 posts


Before Write Data into EEPROM ..Just Erase the EEPROM then write the data.,

user_1377889's picture
10590 posts

@Malik, this is emulated eeprom which is flash memory. Smallest amount to write is a Row which will be erased automatically before writing.

Reading from emulated eeprom is done easiest by assigning the address to a pointer of the underlying type.

I normally use a structure which contains additionally some housekeepign data as number of writes to eeprom and a "Magic Number" which indicates that the structure has been written at least once.



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