NT3H2111 Is there difference in readrange powered from RF-field or host

arnodegroot — Fri, 22 Mar 2019 08:18:21 GMT

We use the NT3H2111 without energy harvesting, so nothing is connected to the Vout pin.

Is there any difference in readrange when the chip is: powered from RF-field first (without applying external power from the host), or when the chip is powered from the host first and then brought into the RF-field?

11 Communication and arbitration between NFC and I2C interface

"If both interfaces are powered by their corresponding source, only one interface shall

have access to the memory according to the "first-come, first-serve" principle."

Re: NT3H2111 Is there difference in readrange powered from RF-field or host

Jonathan_Iglesias — Thu, 28 Mar 2019 15:18:24 GMT

Dear Arno de Groot,

There should not be any difference in the read range, this device is still a passive element, so the read range is the same for both cases, the section you refer here talks about the arbitration of the EEPROM in case that the RF interface try to write or read from the EEPROM at the same time as the I2C interface. there is an arbitration to avoid this kind of collision.

Jonathan

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NT3H2111 Is there difference in readrange powered from RF-field or host

Re: NT3H2111 Is there difference in readrange powered from RF-field or host