RFID UHF Chip and Application

RFID UHF chips, generally, are based on ISO18000-6C standard.
UHF frequencies guarantees reading distances up to 10meters and chips, generally, have a EPC memory (modifiable tag code), a TID memory (transponder Identifier) and different size user memory .

We propose below some UHF chips:

Alien Higgs3: Chip of interesting features, both for user memory size (512bit) and for high performance as reading distance.

Alien Higgs4: Chip very intersting becuase of the cost, very low, and the performances, seriously improved, compared to Alien Higgs3. User memory is reduced to 128bit.

NXP UCODE7: Without user memory and with 128bit EPC memory is a very simple and low-cost chip.

NXP UCODE DNA: Chip based on GS1 Gen2 V2 standard with encryption, it is untraceable with a 3072bit user memory.

* Access Control
* Inventory
* Job Security
* Timing of sport races
* Asset Management
* Waste Management

Alien Technology

Alien Technology provides UHF Radio Frequency Identification (RFID) products and services to customers in retail, consumer goods, manufacturing, defense, transportation and logistics, pharmaceuticals and other industries. Organizations use Alien’s RFID products and services to improve the effectiveness, efficiency and security of their supply chains, logistics and asset tracking operations. Alien’s products include RFID tags, RFID readers and related training and professional services. Alien’s patented Fluidic Self Assembly (FSA) technology and related proprietary manufacturing processes are designed to enable the manufacture of high volume, low cost RFID tags.

Alien was founded in l994. Alien’s facilities include: its corporate headquarters in Morgan Hill, CA; RFID tag manufacturing facility in Fargo, ND; the Alien RFID Solutions Center in the Dayton, Ohio area, Quatrotec’s offices at the San Francisco International Airport (SFO); and its sales offices in the US, Europe and Asia. Alien is a member of EPCGlobal.

Passive RFID IC EM4124

EM4124,Read/Write, EPC Gen2 / ISO 18000-63 Type C Passive RFID IC

EM4124 is a certified EPCTM Class-1 Generation-2 (Gen2) IC and compliant with ISO/IEC 18000-6:2010 Type C. Each chip is manufactured with a 64-bit Unique Identifier to ensure full traceability.

The EM4124 has 176 bits of non-volatile memory (16 bit PC Word, 96 bit EPC Code, 32 bit Kill Password and 32 bit Access Password), enabling the support of ISO or EPC data structures.

EM4124 achieves a typical read sensitivity of -19 dBm at the chip level, which translates into a typical -21 dBm sensitivity at the tag level for a dipole-like antenna with 2 dBi gain (25us TARI, 250 kHz BLF).

EM4124 Solutions:
Supply chain management
Tracking and tracing
Container identification
Access control
Asset control

EM4124 Feature:
ISO 18000-6C compliant
EPC Class-1 Gen-2 certified
96-bit EPC / UII encodings are supported
64-bit manufacturer-programmed & locked Unique Identifier (TID / UID)
-19 dBm (-21 dBm) typical IC (tag) read sensitivity
32-bit password-protected Kill command
32-bit password-protected Access command
Optional deactivate function to address privacy concerns for retail applications
Extended temperature range (–40°C to +85°C)

More Passive RFID IC: Passive UHF RFID IC EM4126 , EM4324 UHF RFID IC , EM4325 UHF RFID IC.


EM4325 is a Class-3 Generation-2 (Gen2) IC that is compliant with ISO/IEC 18000-63 (Gen2) & ISO/IEC 18000-64 (TOTAL) as well as EPCTM Class-1 Generation-2. The chip offers an advanced feature set leading to a performance beyond that of standard Gen2 chips and can be either battery powered or beam powered by the RF energy transmitted from a reader. In a battery assisted passive (BAP) configuration, the EM4325 offers superior reading range and reliability compared to purely passive RFID solutions.

EM4325 includes 4096 bits of high speed non-volatile memory (EEPROM) that is organized into 64 pages with 4 words per page. The chip supports either ISO or EPCTM data structures that are compliant with EPCglobal Tag Data Standards, Version 1.8, and is delivered with a Unique Identifier (UID) to ensure full traceability.

EM4325 supports advanced applications by providing programmable external interfaces for an auxiliary function and a 4-bit I/O port. The auxiliary function may be configured as an input for tamper detection or as an output for notification of RF events to external devices. The 4-bit I/O may be configured to support 4 discrete signals or as a Serial Peripheral Interface (SPI) bus. The chip may serve as either an SPI Master device or an SPI Slave device. The programmable external interfaces allow the EM4325 to function as an RF front end and protocol handler in advanced RFID tags or embedded applications. In a passive configuration, the programmable external interfaces allow the EM4325 to serve as a SPI Master with energy harvesting and provide power to external components.

Battery supply management is provided to prolong battery life in BAP applications. The chip supports programmable duty cycle control, auto-switching between battery powered and beam powered operation, and programmable enable/disable of an ultra-low power mode for extended storage applications.

What is EPC Gen 2?

What is EPC Gen 2?
Gen 2 is the shorthand name given to the second generation EPC global protocol. It addressed the compatible problems in old tag class 0 and 1 and was designed to be globally accepted with enhancements such as a dense reader mode of operation, so as to prevent readers from interfering with one another when they are used in close distance to each other. It was later adopted with minor adjustments as ISO 18000-6C.