Method to select phys and a configuration of the data path in a multi PHY DRAM

A memory device comprising:

• a plurality of physical interfaces comprising a first physical interface and a second physical interface;
• a plurality of memory cores assigned to the plurality of physical interfaces, respectively;
• a plurality of data input/output pins corresponding to the plurality of physical interfaces, respectively, and configured to be used for connection with an external device of the memory device, the plurality of data input/output pins comprising a first data input/output pin corresponding to the first physical interface;
• and
• a setting circuit configured to selectively connect the first physical interface to the first data input/output pin or the second physical interface,
• wherein each of the plurality of memory cores comprises a plurality of stacked memory dies connected via a through electrode and continuously stacked, and
• wherein the setting circuit is configured to select the first physical interface in response to the external device supporting one physical interface, and select the first physical interface and the second physical interface in response to the external device supporting two or more physical interfaces.

An electronic device comprising:

• a computing device;
• and
• a memory device comprising:
• a plurality of physical interfaces comprising a first physical interface connected to the computing device and a second physical interface;
• a plurality of memory cores assigned to the plurality of physical interfaces, respectively, each of the plurality of memory cores comprising a plurality of stacked memory dies connected via a through electrode and continuously stacked;
• and
• a setting circuit configured to selectively connect the second physical interface to the computing device or the first physical interface,
• wherein the setting circuit is configured to select the first physical interface in response to the computing device supporting one physical interface, and select the first physical interface and the second physical interface in response to the computing device supporting two or more physical interfaces.