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EM4423 Dual Frequency UHF and NFC RFID Label

SKU: GSC-4423
The chip is a dual frequency device supporting ISO/IEC14443 Type A, NFC ForumTM Type 2 specifications, ISO/IEC18000-63 and EPC Gen2 V2

Product description

The chip combines two functionalities on one single die, the EPC technology 

used for long range application purposes and the NFC used to exchange data in a proximity range. 

Both protocols may share a common unique ID

Targeted applications and market segments include retail, product authentication or smart NFC posters.

A tag or label based on the tag provides multiple benefits and usages via the EPC communication interface 

like stock inventory, product returns, and data privacy. 

The same tag or label also enables new marketing services like product information or loyalty programs using an NFC 

enabled smartphone.


The chip is a dual frequency device supporting ISO/IEC14443 Type A, NFC ForumTM Type 2 specifications, 

ISO/IEC18000-63 and EPC Gen2 V2. Additional features have been added to provide chip privacy. 

For the NFC interface, the smart counter increments its value each time the NFC message has been read by the end-user. 

Each chip is manufactured with a 96-bit unalterable unique identifier (UID) to ensure full traceability. The same UID 

number is used by both RF protocols. During an ISO/IEC14443 anti-collision procedure, the 7 bytes which are 

part of the 96-bit are sent back by the transponder IC.

The tag offers two non-volatile memories which are accessible by both RF air interfaces. The two memories are 

segmented to implement multiple applications. 

EM4423 supports the optional BlockWrite command, enabling the fast encoding of a 96-bit EPC. em|echo also 

supports the optional Untraceable command to hide portions of memory of the tag or label.


Dual Frequency 1-step inlay manufacturing 

Shared unique ID Shared memory 

Minimum 100k write cycles endurance 

Minimum 10 years data retention 

 Sawn wafers, 6-mil thickness, gold bumps



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