Apparatus and method for controlling power supply of RFID tag

Power supply control apparatus and method of the RFID tag according to the present invention, RFID After the physical separation of a plurality pieces of high-capacity memory in the tag, by selectively controlling, as needed the power supply to the memory discrete respectively, the RFID tag of by, and reducing the power consumption of the RFID tag to a minimum to reduce the power consumption, improving the RFID reader and the RFID tag between the wireless recognition distance that to improve the efficiency of communications between the RFID reader and RFID tag, the device It has a first memory, information for performing the RFID reader, and the inventory process is stored; A second memory for storing the RFID tag-related data and files; After performing the RFID reader, and the inventory process using the inventory information stored in the first memory, when receiving the second memory access command from the RFID reader, and a controller for controlling the power to be supplied to the second memory .