Instruction execution method, memory controller and memory storage device

Abstract

The invention provides an instruction executing method, a memory controller and a memory storage device. The method comprises the following steps: dividing a logic address zone into a plurality of logic address groups; independently configuring a gold key for each logic address. The method further comprises the following steps: receiving a writing instruction and writing data corresponding to the writing instruction from a host system, and temporarily storing the writing data in a buffer memory; executing the writing instruction, starting one direct memory access to transmit the writing data from the buffer memory into a rewritable nonvolatile memory module of the memory storage device, and using the corresponding gold key to encrypt each sector of data in the transmitted writing data according to the logic address group of the logic address storing the writing data.

Description

technical field [0001] The invention relates to an instruction execution method, a memory controller and a memory storage device. Background technique [0002] Digital cameras, mobile phones, and MP3 players have grown rapidly in recent years, making consumers' demand for storage media also increase rapidly. Since the rewritable non-volatile memory module (such as flash memory) has the characteristics of data non-volatility, power saving, small size, and no mechanical structure, it is very suitable for being built in various portable devices such as the above examples. in the multimedia device. [0003] Generally, the rewritable non-volatile memory module is controlled by a memory controller and electrically connected to a host system through a connector. The host system issues instructions to the memory controller to access data in the rewritable non-volatile memory module. In order to protect the security of the data stored in the rewritable non-volatile memory module, ...

AI Technical Summary

Problems solved by technology

Since it is necessary to perform multiple direct memory accesses in the buffer memory to complete the encryption of all data corresponding to a write command, the storage performance of the memory storage device is seriously affected.

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