My reader can read/write the M24LR04 but not M24LR16

[kinder228]

Posted on August 20, 2013 at 11:49

Hello,

I'm using an RFID reader (Feig LRM1002) with 2 different version of the M24LRXX chip : - M24LR04E

(ANT3-M24LR04E)

- M24LR16E

(ANT1-M24LR16E and ANT2-M24LR16E)

A problem appear when I scan my tag :

When I send an ''Inventory'' command there are no problems, I can see both versions of the chip. The problem appear when I send a ''Read or Write Multiple Blocks'' command. With the M24LR16E I have an error message : ''No Transponder In Reader Field'' (it works well with the M24LR04E). I tried the ''Extended Adress Mode'' but it didn't change anything. Do you know what the problem could be ? For information I use the demo software provided by the reader manufacturer (Feig ISOStart). I took some screenshot :

http://www.fasthigh.info/browse.php?u=S5wrRyW4EcB3in6R9EG5XeQXepSbASj67PsDOz97Sdsgbcnjt2B3cHjHxcD12hLJ5qQrvUJYBaXu3g3s&b=5

http://www.fasthigh.info/browse.php?u=S5wrRyW4Ecd3in6R9EG5XeQXepSbASj67PsDOz97Sdsgbcnjt2B3cHjHxcD12hLB46Mhs0VdAqDu3g3s&b=5

Thank you m24lr04e m24r04e 2-bytes m24lr16e devkit-m24lr-a m24lr-read-write-problem m24lr16e m24lr04e high-density

[Anais GALLIGANI]

Posted on August 21, 2013 at 11:31 Hello, It is linked that the M24LR16E is a high density memory ans as such is featuring 2-byte address vs. 1 byte address for low density ISO 15693 products. That is a minor firmware upgrade. In order to further help you, might you send me your email please? Thanks a lot, Have a nice day, All the best, ST NFC/RFID Dynamic support

[kinder228]

Posted on August 22, 2013 at 09:22

Ok, thank you. So I need to upgrade my reader firmware.

[Anais GALLIGANI]

Posted on August 22, 2013 at 10:12 Hi , I can send you contact from Feig if you need to upgrade the firmware of their reader. And also a firmware that might be compatible with your reader. It need to be test. For that , I need your contact email .

[kinder228]

Posted on August 22, 2013 at 11:41

Ok, I already have some contacts with Feig. I'll contact them myself.

Thanks a lot for the infos

[Anais GALLIGANI · Accepted solution]

Posted on August 23, 2013 at 08:55 Hello Bill, Please find also an application note that might help you : AN4054: Comparison of RF addressing modes of low-density and high-density ISO/IEC 15693 devices

http://www.st.com/st-web-ui/static/active/en/resource/technical/document/application_note/DM00048677.pdf

Have a nice day, All the best, ST NFC/RFID Dynamic tag