SL3S4011_4021

UCODE I²C

Rev. 3.5 — 18 September 2018

Product data sheet

204935

COMPANY PUBLIC

1 General description

The UHF EPCglobal Generation-2 standard allows the commercialized provision of

mass adoption of UHF RFID technology for passive smart tags and labels. Main fields

of applications are supply chain management and logistics for worldwide use with

special consideration of European, US and Chinese frequencies to ensure that operating

distances of several meters can be realized.

The NXP Semiconductors UCODE product family is compliant to this EPC Gen2

standard offering anti-collision and collision arbitration functionality. This allows a reader

to simultaneously operate multiple labels/tags within its antenna field.

The UCODE-based label/ tag requires no external power supply for contactless

operation. Its contactless interface generates the power supply via the antenna circuit by

propagative energy transmission from the interrogator (reader), while the system clock is

generated by an on-chip oscillator. Data transmitted from the interrogator to the label/tag

is demodulated by the interface, and it also modulates the interrogator's electromagnetic

field for data transmission from the label/tag to the interrogator.

A label/tag can be then operated without the need for line of sight or battery, as long as it

is connected to a dedicated antenna for the targeted frequency range. When the label/tag

is within the interrogator's operating range, the high-speed wireless interface allows data

transmission in both directions.

interface. Its large memory can be then read or write via both interfaces.

electronic device microprocessor. By linking the rich functionalities of the EPC Gen2

application.

modes. Its large memory is based on a field proven non-volatile memory technology

commonly used in high-quality automotive applications.

2 Features and benefits

2.1 UHF interface