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Non-volatile storage systems with go to sleep adaption

  • US 10,365,841 B2
  • Filed: 07/13/2015
  • Issued: 07/30/2019
  • Est. Priority Date: 12/12/2011
  • Status: Active Grant
First Claim
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1. A non-volatile memory system, comprising:

  • a non-volatile memory section that stores a delay value;

    a volatile memory section that receives a copy of the delay value from the non- volatile memory section at initialization of the non-volatile memory system;

    a host interface through which the memory system is connectable to a host to receive commands and power;

    a controller, where the controller is configured to manage data in the non-volatile memory system in one of either a standard mode, in which the memory system executes commands from said host, or a low-power standby mode, into which the memory system lapses after the delay value subsequently to completing a first command in the standard mode unless subsequently receiving a second command from the host prior to lapsing into the standby mode; and

    wherein the controller is configured to;

    in response to receiving the second command prior to lapsing into the standby mode, decrease the delay value based on a first computation, wherein the first computation involves a first input including a measured interval between the first and second commands; and

    in response to receiving the second command after lapsing into the standby mode, increase the delay value based on a second computation, wherein the second computation involves a second input including a first delay value, wherein the second input of the second computation is different from the first input of the first computation; and

    wherein, in response to receiving a command from the host specifying a new delay value while in the low-power standby mode, the controller is configured to place the memory system into the standard mode and subsequently executed the command specifying the new delay value and reset the value of the delay value with the new delay value.

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