DEVICE FOR GENERATING CLOCK IN RFID WITH NON-VOLATILE FERROELECTRIC MEMORY

摘要

A device for generating a clock in an RFID(Radio-Frequency IDentification) with a non-volatile ferroelectric memory is provided to maintain stable frequency characteristics at a wide operation voltage by restricting the variation of frequency according to a voltage. A clock adjustment part(161) outputs a voltage control signal with a different current level according to the level variation of a power supply voltage by sensing the level of the power supply voltage. A clock oscillation part(162) generates a differential output clock by adjusting an oscillation frequency of a clock according to the voltage control signal. A clock signal coupling part(163) outputs a plurality of reference voltages corresponding to the differential output clock by coupling the differential output clock. A clock amplifier part(166) restricts the frequency variation of the clock within a specific frequency range by comparing and amplifying the plurality of reference voltages.