Controller controlling an interleave operation, solid-state drive including the controller, and control method controlling an interleave operation

A solid-state drive comprising:

• first and second banks;
• and
• a controller which controls an interleave operation between the first and second banks,
• the controller comprising:
• a first command queuing part corresponding to a first bank, the first command queuing part queuing a first command, the first bank executing the first command queued in the first command queuing part;
• a second command queuing part corresponding to a second bank, the second command queuing part queuing a second command, the second bank executing the second command queued in the second command queuing part;
• and
• a command execution control part which is configured to:
• generate a first sub-command sequence based on a group of commands in the first command queued in the first command queuing part,
• generate a second sub-command sequence based on a group of commands in the second command queued in the second command queuing part, and
• determine whether or not to execute the first and second sub-command sequences in parallel as the interleave operation, by comparing an additional value of a first numeric converted parameter of the first sub-command sequence and a second numeric converted parameter of the second sub-command sequence with a threshold data.

A control method comprising:

• queuing a first command in a first command queuing part, the first command queuing part corresponding to a first bank which is capable of executing the first command queued in the first command queuing part;
• queuing a second command in a second command queuing part, the second command queuing part corresponding to a second bank which is capable of executing the second command queued in the second command queuing part;
• generating a first sub-command sequence based on a group of commands in the first command queued in the first command queuing part,
• generating a second sub-command sequence based on a group of commands in the second command queued in the second command queuing part, and
• determining whether or not to execute the first and second sub-command sequences in parallel as an interleave operation between the first and second banks, by comparing an additional value of a first numeric converted parameter of the first sub-command sequence and a second numeric converted parameter of the second sub-command sequence with a threshold data.