Patent ID: 7786847

Claim:
A radio frequency identification (RFID) device, comprising: an analog block configured to receive a radio frequency signal so as to output an operation command signal; a digital block configured to output an address, a temperature address, an operation control signal, and a temperature sensor activation signal in response to the operation command signal received from the analog block, and to supply a corresponding response signal to the analog block; a memory block in the form of a ferroelectric random access memory configured to receive the address, the temperature address, and the operation control signal so as to generate an internal control signal for controlling an internal operation, and to read/write data in a cell array comprising a non-volatile ferroelectric capacitor in response to the internal control signal; a temperature sensor processing unit configured to detect a temperature change of an RFID tag in response to the temperature sensor activation signal; and a temperature memory included in the memory block and configured to store temperature data detected from the temperature sensor processing unit in a specific region of the cell array allotted by the temperature address, wherein the temperature sensor processing unit is included in the memory block.