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 ?
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: