EM4423 – also branded EM Echo – corresponds to the latest generation of EM Microelectronic contactless devices, bringing innovative features to the NFC and EPCTM worlds. 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 EM4423 provides multiple benefits and usages via the EPCcommunication 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 EM4423 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. EM4423 also supports the optional Untraceable command to hide portions of memory of the tag or label.
Wifi, Bluetooth pairings
Smart posters, Advertisings
Coupons, loyalty programs
Supply chain management
Tracking and tracing
Dual Frequency 1-step inlay manufacturing
Common unique ID
Minimum 100k write cycles endurance
Minimum 10 years data retention
Extended temperature range (-40°C to +85°C)
Sawn wafers, 3/6-mil thickness, gold bumps
ISO/IEC 14443A -3 compliant tag
NFC Forum Type 2 compatible
Enables NDEF data structure configurations
Communication baud rates at 106kbps
7 Bytes unique ID number using same serialization as UHF interface
1920-bit user’s memory
Anti-tearing support for NFC capability container (CC) and Static/Dynamic lock bytes
NFC Memory locking mechanism per block/page
ACCESS counter increased at first reading
Optional UHF memory mapping
Optional read-only locking function
Optional security timeout for unsuccessful LOGINs
17pF or 50pF NFC on-chip resonant capacitor
ISO/IEC 18000-63 compliant
EPC Gen2 V2 compliant
Alteration EAS compliant
TAG alteration (Core) compliant
128-bit or 224-bit UII/EPC
96-bit TID number using same serialization as NFC interface
160-bit or 64-bit USER memory bank
32-bit Access and Kill passwords
Fast writing using the BlockWrite command
BlockPermalock of USER memory
NFC field detection and used as power supply
NFC ACCESS counter status readable
More RFId chip types view http://www.oprfid.com /rfidchip.html