Does NFC content on nrf52832 remain readable when not powered?

[jvinc]

Hi all,

We are currently developing a BLE enabled sensor device. We want to use the NFC component to identify the sensor by writing a device ID to the tag.

Question: Will the NFC component retain it's contents when the battery is removed/goes flat (in the same way a passive tag retains it's contents without power)?

If the answer is no, then is there a workaround by placing a passive NFC chip on the board connected to the same antenna?

Thank you in advance!

[FormerMember]

The NFC data is stored in RAM. So if the chip is power cycled (f.ex flat battery), the content will be lost. If you want to make sure NFC data is not lost upon a power cycle, the data should be stored in flash. To do so, you can use the Flash Data Storage module (FDS).