Patent ID: 11922022
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 15:
16. A method of controlling a memory card including a command terminal; a plurality of data terminals; a clock terminal; a power terminal for a power supply voltage; a ground terminal for a ground voltage; and a nonvolatile memory,
the method comprising:
receiving a clock signal through the clock terminal from an outside of the memory card;
outputting a first status data through at least one of the data terminals to the outside of the memory card, in accordance with only one of a rising edge and a falling edge of the clock signal, in a first transfer mode;
outputting data through at least one of the data terminals to the outside of the memory card, in accordance with both the rising edge and the falling edge of the clock signal, in a second transfer mode;
receiving a command and responding to the command via the command terminal in accordance with only one of a rising edge and a falling edge of the clock signal; and
only if the card supports a double-edge mode, outputting data through at least one of the data terminals to the outside of the memory card in accordance with both the rising edge and the falling edge of the clock signal, in the second transfer mode.