MEMORY SYSTEM THAT STORES DATA REDUNDANTLY

摘要

A memory system includes a semiconductor memory device including a plurality of memory blocks, including a first block storing data and a second block storing backup data, a plurality of pins, and a controller configured to output a control signal to the semiconductor memory in accordance with the command. When the controller receives from outside of the memory system, a read command for the data in the first block, and the data in the first block are available, the controller is configured to transmit the data in the first block to the outside of the memory system. When the controller receives from outside of the memory system, a read command for the data in the first block, and the data in the first block are not available, the controller is configured to transmit the backup data in the second block to the outside of the memory system.

主权项

1. A memory system, comprising:
a semiconductor memory device including a plurality of memory blocks, including a first block storing data and a second block storing backup data; a plurality of pins for connection to the outside of the memory system, the pins including a first pin configured to receive a chip select signal, a second pin configured to receive a clock signal, and a third pin configured to receive a command in synchronization with the clock signal; and a controller configured to output a control signal to the semiconductor memory in accordance with the command, wherein when the controller receives from outside of the memory system, a read command for the data in the first block, and the data in the first block are available, the controller is configured to transmit the data in the first block to the outside of the memory system, and when the controller receives from outside of the memory system, a read command for the data in the first block, and the data in the first block are not available, the controller is configured to transmit the backup data in the second block to the outside of the memory system.