This seems like an "easy" topic, yet I'm struggling to get a clear understanding.Section 3.2 of the datasheet (Operating Conditions) defines a single, wide range for VDD (2.4V to 5.5V). But Section 1.3.2 (IO Configuration Register 2) defines two non...
Hi Community,We are currently developing an NFC reader for our access control system that needs to read NFC passes stored in Google Wallet and Apple Wallet. The system should: Read emulated NFC tags from both Android and iOS devicesExtract the NDEF p...
We are considering transferring power along with NFC communication using the ST25R3916 chip.From one of the application notes, we found the following block diagram, as shown in the image below. According to the diagram, the power amplifier is placed ...
Hi,About rfalST25xVPollerFastReadMultipleBlocks and rfalNfcvPollerReadMultipleBlocks。I use st25r3916 to read NFCV tag.The farthest reading distance of my reader can reach 70mm.When I use the command RFALNFCVPoller Read Multipleblocks, I can successfu...
Hello everyone,As a students at a company do I try to build a tool or method to evaluate some parameters of NFC coils (Q and L). I have been given some NFC tags to proof the correct functionality later. One of those tags is the "ANT7-T-ST25DV04K" wit...
Hello!Is there any additional information about on how to use on ST25R3916 the bypass mode of internal VDD_RF regulator to be able to a transmitter output current higher than 350 mA (up to 500 mA) supplied from an external source.In ST25R3916 datashe...
I want to use my ST25DV with both I2C and RF interfaces. There is no clear arbitrage between the 2, but the first is served. Moreover, I tested that while I2C is operating in reading and writing bytes in a for loop, the RF can corrupt the data in so...
Hi ST Community,I'm developing an NFC reader for a payment interface and require recommendations for suitable STMicroelectronics chips that are compliant with EMV Level 1 and preferably Level 2Regards
We've had issue with reading NTAG215 cards with some devices, presumably due to the large spread-out antenna, so I'm working on a better understanding of the power output so that we can properly calibrate devices out of manufacturing.Currently, I do ...
I'm trying out the ST25R3911B-DISCO board to evaluate how to read data from multiple 14443A RFID tags. Under the Polling tab I can see all the UIDs for the tags near the board. However, when I go over to the NFC Type 2 tab, if I select "Configuratio...