Power consumption information of X-NUCLEO-NFC08A1 development board and st253916b chip

[yuan_cao]

When evaluating the st25R3916b chip using the X-NUCLEO-NFC08A1 development board, we found that the current reached about 100-150ma during the nfc reading and writing process. However, we did not find the standard value for this part of the current in the manual. May I ask if there are any official typical current values for this chip or development board during nfc reading and writing for our reference? What is the minimum current that this chip can achieve when reading and writing in nfc?

[Travis Palmer · Accepted solution]

Hello Yuan_cao,

The current consumption in various modes can be found in chapter 5.4 Electrical specifications of the datasheet (DS13541 Rev 9) of the ST25R3916B.

Nevertheless the current during Tx is dependent on the tuning of the antenna. It is also the main mechanism to control output (and input) power.

Further information can be found in chapter 3.2 of AN5276. The calculation of the output power can be also found in AN5584.

Please let us know, if you have additional questions.

br Travis