Patent ID: 7676640

Claim:
An electronic data flash card adapted to be accessed by a host system that is capable of establishing a communication link, said electronic data flash card comprising: (A) a card body; (B) a flash memory device mounted on the card body, the flash memory device including a plurality of non-volatile memory cells; (C) an input/output interface circuit mounted on the card body for establishing communication with the host system; and (D) a flash memory controller mounted on the card body and electrically connected to said flash memory device and said input/output interface circuit, wherein the flash memory controller is configured to determine a type of the flash memory device by sending a read command to the flash memory device, wherein if the flash memory device pulls down a read/busy# signal line after the read command is received, the flash memory device is associated with a small block type flash memory device, and sending a confirm command to the flash memory device, wherein if the flash memory device pulls down the read/busy# signal line until the confirm command is received, the flash memory device is associated with a large block type flash memory device.