Memory system and operating method thereof for controlling a multi-plane read operation

Abstract

An operating method of a memory system that includes a memory device including a plurality of planes and a plurality of page buffers for the plurality of planes, respectively, and a controller suitable for controlling the memory device, the operating method includes: providing, by the controller, the memory device with page read commands for respective target planes among the plurality of planes; simultaneously reading, by the memory device, data from the target planes and buffering the data in target page buffers corresponding to the respective target planes in response to the page read commands; selectively providing, by the controller, the memory device with an all-plane data output command or respective-plane data output commands from which target page addresses are omitted; and sequentially outputting, by the memory device, the data buffered in the target page buffers, in response to the all-plane data output command or the respective-plane data output commands.