Controller adaptation to memory program suspend-resume

A method, comprising:

• selecting, using a die arbiter, among a plurality of die arbiters, a queue, among a plurality of queues of a die, among a plurality of dies of a memory to be programmed, and selecting a request of the die, using a channel arbiter, among a plurality of channel arbiters, each in communication with at least two of the die arbiters, to select a command from the selected queue of the selected die, the plurality of die arbiters, the plurality of channel arbiters and the plurality of dies being components of a memory system;
• programming the selected one of the plurality of dies in response to the selected command;
• receiving, with a controller of the memory system, a host read request on the selected die during programming of the selected die;
• suspending the programming on the selected die and perform the host read request when a suspension threshold for a current state of the selected die is met, the current state of the selected die being one of a suspend ready state in which the suspension threshold is calculated using a first set of parameters, one of which is representative of suspend overhead, and a resume state in which the suspension threshold is calculated using a second set of parameters, one of which is representative of suspend-continue overhead, the suspension threshold being updated dynamically in accordance with the state of the selected die;
• continuing the programming on the selected die, without suspending programming thereon, when the suspension threshold is not met;
• and
• recording and controlling the states of each of the plurality of dies,
• wherein execution of the suspending and continuing steps reduces read latency.

A memory device comprising:

• a plurality of dies, each having a plurality of queues, die arbiters, each in communication with the plurality of queues of a corresponding dies, channel arbiters, each in communication with at least two of the die arbiters, and a controller for controlling the memory device;
• each of the arbiters being configured to:
• select a command from one of the plurality of queues of the corresponding die;
• each of the channel arbiters being configured to select a request from a particular die among the dies in communication with the corresponding channel arbiter;
• and
• the controller being configured to:
• program the selected one of the plurality of dies in response to the selected program command;
• receive a host read request on the selected die during the programming of the selected die;
• suspend the programming on the selected die and perform the host read request when a suspension threshold for a current state of the selected die is met, the current state of the selected die being one of a suspend ready state in which the suspension threshold is calculated using a first set of parameters, one of which is representative of suspend overhead, and a resumed state in which the suspension threshold is calculated using a second set of parameters, one of which is representative of suspend-continue overhead, the suspension threshold being updated dynamically in accordance with the state of the selected die;
• continue the programming on the selected die, without suspending programming thereon, when the suspension threshold is not met;
• and
• record and control the states of each of the plurality of dies using a die suspend server,
• wherein execution of the suspend and continue operations reduces read latency.