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.