Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
As per the latest product brief DB4247 Rev 3 (May 2021) it says the accessories list containing PCB and Patch Antenna. Where I can find specification of the both the antenna (Gain, Bandwidth, EU/USA details)Data brief - ST25RU3993-HPEV - RAIN® (UHF) ...
I try to Kill a TAG, I'm using different configurations but don't obtain a different answer.I believe if a Kill a Tag, It's not more possible for my reader to identify her, but after I using the kill command my Tags still read by my reader.I want to ...
Hi!I have a NUCLEO-L476RG board that I want to use to control the ST25RU3993-HPEV board with. I am not interested in using the onboard processor on the dev-board, but instead use an independent processor. Among other reasons I need this setup because...
We made a prototype, but the reading performance is worse than EVAL.It was confirmed that the value of Ext.signal sourse in the "normal with RF on" state was large.Therefore, it is presumed that the large reception noise is the cause of the deteriora...
Hi everyone,I am currently testing the UHF RFID board from ST (ST25RU3993-HPEV) and the eval board is using STM32L476RGT6 (Arm®(a) 32-bit Cortex®-M4) as the MCU. Our testing so far has been good and we would like to design our own RFID reader based o...
Hello,I wanted some more clarification on the st25r3918 chip, it is very interesting as well as cheap compared to st25r3916 and covers my needs.are they interchangeable? do they have pin to pin compatibility? the firmware has not yet been released or...
4 Months ago, we completed the design of a product, where we can update the firmware via ST25DV64K using ST25 NFC App. After installing the new version (NFC TAP App V.3.6.0), it doesn't work anymore. Can we get access to the previous version of the a...
I am using st25dv04k. when i am using NFC_IO_WriteReg16() it return error no 6. when i am using it print below message:NFC_IO_WriteReg16(ae,0,7edbfb66,1)Error -6 while writing @0 (devAddr=AE)How to resolve this issue ?int32_t NFC_IO_ReadReg16(uint16...
Hello allI use ST25DV64K.I am always set the MB_MODE of ST25DV64K to 1 after power-onAfter setting the value to 1, a verify check is performed to confirm that the value is set to 1.And the result MB_MODE is 1.When the power is turned on again after t...
We are using Area 1 for a 32 byte header, and Area 2 is being used as general EEPROM storage (ENDA1 = 0x00, ENDA2=ENDA3=ENDA4=0x0F). When I setup the system ENDAx registers like this and I try to do a read across the Area1-Area2 boundary the first ...