Rfid tag having an improved operational speed and operating method of the same

A RFID tag, comprising:

• a short-term memory block storing and outputting a flag data representing a present data processing state and value corresponding to a transmitting and receiving state of a command signal and a response signal via internal nonvolatile capacitors, wherein the short-term memory block comprises:
• a first flag unit storing the flag data for a prescribed time regardless of whether a supply of an operational voltage is stopped in response to a power-on reset signal and a first write signal;
• and
• a second flag unit storing and maintaining the flag data when the operational voltage is supplied in response to the power-on reset signal and a second write signal and storing the flag data for more than the prescribed time when the supply of the operational voltage is stopped.

An operating method of a RFID tag, comprising:

• a data processing step transmitting and receiving a command signal and a response signal by radio frequency and reading or writing data according to a power-on reset signal and generating an operational voltage according to a radio transmitting and receiving state;
• a first flag step of storing a flag data representing a present data processing state and value for a prescribed time regardless of whether a supply of the operational voltage is stopped in response to a first write signal generated by the power-on reset signal and the command signal;
• and
• a second flag step of storing and maintaining the flag data when the operational voltage is supplied and storing the flag data for more than the prescribed time when the supply of the operational voltage is stopped in response to a second write signal generated by the power-on reset signal and the command signal.