Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
I wonder if a ST25DV64K can be used in standalone.If I connect AC0 and AC1 to an antenna (using a smartag antenna), shouldn't the Harvest (V_EH) pin potential be around 3.3V (compared to the GND).Does the EEPROM configured to provide this power volta...
I have to design an NFC Antenna that has to stay on PCB whic shape is a circular sector.I'm thinking to design an antenna that follows the profile of the PCB.Is that a good idea? Do you have any other suggestions?Thanks
Hello,Currently i am using NUCLEO-F767ZI as a development board for my application. As part of project requirement i have to explore NFC. I have gone through the specifications of X-NUCLEO-NFC01A1. This board is using Arduino UNO R3 connector. But ...
I am currently receiving a Tag EPC number and wondering how the CRC -16 value is generated so that I can check on reception. Following an Ack command I Receive 16 bytes in the fifo register which are read out as: 0x30, 0x00, 0xE2, 0x00, 0x42, 0x16, 0...
Hi,We have a bespoke board built around a STM3L4 and a M24SR04-Y.We share data with a NFC reader, i.e. the NFC reader can write a command into the M24SR EEPROM, interrupt the STM32 via GPO and the STM32 will reply by writing something in the EEPROM.B...
Hello,Currently i am using NUCLEO-F767ZI as a development board for my application. As part of project requirement i have to explore NFC. I have gone through the specifications of X-NUCLEO-NFC01A1. This board is using Arduino UNO R3 connector. But N...
I have designed a pcb that will connect the st25dv16k chip to a tuned trace antenna. Before I solder it, is there anything I need to do to the chip itself, programming or otherwise, in order for the tag to read on a device such as a phone? I haven'...
I use ST25DV to write binary files. I can only write one BLOCK at a time. I think every time I write is Multiple BLLOCK,Each BLOCK has 4 bytes. If I want to write 64 bytes(binary fules）, the boad have to read and write 16 times. If I want to read and...
Hello all.I use ST25R3911B-DISCO and dynamic tag ST25dv04kWhen reading data from FIFO come bytes with a redundant cipher.Suppose the code is presented as custom manchester code:10 - 0, (two bits in recived bytes - bit result)01 - 1,00 - 0,11 - 1.Afte...
Hello all,I am trying to understand how to configure the ST25R3911B to comply with the ISO15693.In particular I do not understand how to set the Low/High Bitrate. Looking at the datasheet of the ST25R3911B the Bit Rate Definition Register lowest ach...