Patent ID: 9575663
Date: 2017-02-21
CPC Classifications: G06F,G11C

Claim:
1. A method of operating a solid state drive, wherein the solid state drive comprises a nonvolatile memory, a volatile memory, a memory controller controlling the nonvolatile memory and the volatile memory, and a power generator providing power to the nonvolatile memory, the volatile memory, and the memory controller, wherein the method of operating the solid state drive comprises: designating a bank to perform a self refresh among a plurality of banks included in the volatile memory in response to a power saving mode signal; storing information of the designated bank in a register in response to a command and an address signal; cutting off power from the power generator to the memory controller and the nonvolatile memory after the power saving mode signal is activated and then a predetermined time has elapsed; and performing a self refresh of the designated bank based on the information stored in the register.