NT3H2111 SRAM Mirror

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NT3H2111 SRAM Mirror

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straga_riccardo
Contributor I

I'd like to write some data from my micro (I2C side) to the SRAM of a NT3H2111. I also want to be able to modify the SRAM via an app on my phone, so I decided to enable the SRAM mirror (SRAM_MIRROR_ON_OFF = 1) and to disable the pass-through (PTHROU_ON_OFF = 0).

I have also chosen 0x01 as SRAM_MIRROR_BLOCK.

My questions are :

1) Is the eeprom endurance go down each time I write on SRAM via I2C ?

2) Is the eeprom endurance go down each time I write on SRAM via the NFC ?

Thank you

Riccardo

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IvanRuiz
NXP TechSupport
NXP TechSupport

Hello,

No, the fact that the SRAM is mirrored to the EEPROM means that the SRAM will be accessible to the NFC interface. This way, you will be writing to / reading from the SRAM directly on both interfaces.

For more information, please refer to chapter 8.3.4 of the data-sheet:

https://www.nxp.com/docs/en/data-sheet/NT3H2111_2211.pdf 

Regards,

Ivan.