Ask questions and find answers on ST25 NFC/RFID tags and readers, including connectivity implementations and antenna design.
Posted on March 17, 2014 at 12:24Hi all, I'm looking for an indication of worst-case time-to-ready: i.e. from power-up - assume external VCC, not induced power - to fully commandable from I2C. I've searched the datasheet (DocID022208 rev 8) from end...
Posted on March 20, 2014 at 10:58Hi everybody!It's my first post here and it's my first time working with STMicroElectronics stuff so please be aware I will probably ask very simple or even stupid questions. Please have some patience with me! :)By t...
Posted on March 19, 2014 at 13:44First of all: I really like the software for DEMO-CR95HF-A. But there is an issue with the scripting tool: The command CR95HF_ISO14443-A_SEND_APDU, 00A4040007a0000000030000 should be translated intoCR95HFDLL_SENDRECV...
Posted on March 10, 2014 at 17:29Hi,I am sending this message because I am facing an issue using the M24LR16E-R.My i2c communication between my microcontroller and the M24LR16 chip works perfectly (I am able to read and write the entire memory multi...
Posted on March 06, 2014 at 14:50Hi, We have a custom board made using M64LR64E. Using an android phone, without powering up, will the EEPROM work directly as a NFC tag? Or should it be programmed/ configured first using I2C? We are unable to detec...
Posted on March 05, 2014 at 21:04Hi. I am using CR95HF. I need to identify the presence of multiple iso15693 tags ( placed on the same time ). I need to know how the amount of tags only. Is ther a command or algorithm ?. Please Advise. Ephraim Oved...
Posted on February 25, 2014 at 21:26 Update: It looks like you do have to send the write password with the verify command before calling the enable or disable verification commands when modifying either the read or write permissions. You can then ...
Posted on February 17, 2014 at 09:54hi , 1.what is the page size in M24SR-16 ? in the datasheet its declared that write time for page in I2C = 5ms , write time for up to 264 bytes =150ms 2.Is it normal after writing 5 bytes to the M24SR , i a...
Posted on August 16, 2013 at 14:59Hi all Are there any instructions to calculate multilayer coil's like this: http://www.st.com/web/en/catalog/tools/FM116/SC1444/PF251920?s_searchtype=keyword. I would like to do the same but with 4 Layers. Thank's ...
Posted on March 03, 2014 at 16:12Dear everybodyI have read about ''Using the same antenna for M24LRXXE-R and M24SRXX-Y'' in document AN4409. It describes in table 2.''Tuning parameters for M24LRXXE-R and M24SRXX-R'', that the tuning frequency of an ...