Memory device for outputting data and operating method thereof

A method of operating a memory device including a plurality of planes, each including a plurality of memory banks, the method comprising:

• grouping the plurality of memory banks into a plurality of memory bank groups;
• reading a plurality of data from a plurality of memory banks included in the plurality of memory bank groups;
• compressing the plurality of data, wherein a plurality of data read from at least two memory banks, among the plurality of memory banks, included in one of the plurality of planes are simultaneously compressed;
• merging a plurality of compressed data corresponding to a plurality of memory banks included in one memory bank group, among the plurality of memory bank groups;
• and
• outputting a plurality of merged data corresponding to the plurality of memory bank groups to an external device,
• wherein each memory bank, among the at least two memory banks, is included in different memory bank groups, among the plurality of memory bank groups.

A memory device, comprising:

• a plurality of planes including a plurality of banks;
• a first compressing circuit coupled to a first memory bank and a second memory bank, among the plurality of memory banks, wherein the first compressing circuit is configured to compress first data read from the first memory bank and second data read from the second memory bank to output first compressed data and second compressed data corresponding to the first memory bank and the second memory bank, respectively;
• a second compressing circuit coupled to a third memory bank and a fourth memory bank, among the plurality of memory banks, wherein the second compressing circuit is configured to compress third data read from the third memory bank and fourth data read from the fourth memory bank to output third compressed data and fourth compressed data corresponding to the third memory bank and the fourth memory bank, respectively;
• a first merge circuit configured to generate first merged data by merging the first compressed data and third compressed data;
• a second merge circuit configured to generate second merged data by merging the second compressed data and fourth compressed data;
• and
• an output buffer circuit configured to output the first merged data and the second merged data to an external device according to a predetermined order.