Nonvolatile memory device and cache read method using the same

A cache read method using a nonvolatile memory device, comprising:

• receiving a parameter setting command for setting parameters for a cache read operation;
• determining whether an internal operation is performed based on an output internal busy signal output from a microcontroller;
• if, as a result of the determination, the microcontroller is determined not to perform the internal operation, storing a received parameter in a first register;
• if, as a result of the determination, the microcontroller is determined to perform the internal operation, storing the received parameter in a second register;
• when a cache read command is received, storing in the first register a value stored in the second register, wherein the storage in the first register occurs in response to information stored as a flag of the second register;
• and
• performing a cache read operation according to the parameter stored in the first register.