Reply To: Best MIFARE Reader chip for battery powered appliations

Forum MIFARE general topics and applications Best MIFARE Reader chip for battery powered appliations Reply To: Best MIFARE Reader chip for battery powered appliations

Re: Best MIFARE Reader chip for battery powered appliations

5. December 2019 at 11:22
Hi Brosnan,

The power consumption does not depend from the reader IC, it depends mainly from the operation mode. For instance, if power consumption is critical, then you will let your system sleep a while, wake it up and check, if a card is in the antenna field. For this checking you need to switch the field on. Switching the field on means to drive current into the coil. This consumes power from your battery. If no card is in the field, you switch off the power to the antenna and sleep again.

To be very economical, you might think to sleep longer. But this increases the reaction time! Your client taps the card, and nothing happen, or only after a while. This is not acceptable, and you must find a solution in between saving battery power and acceptable reaction time.

Another question is, for which NFC reader do you find libraries? For instance, our reader PN512 is not the newest product, but it is used widely in projects with Raspberry Pi and similar boards. You will find easily software and low-level driver for this IC.

The TapLinx team

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