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Erase suspend/resume for memory

  • US 9,223,514 B2
  • Filed: 03/13/2013
  • Issued: 12/29/2015
  • Est. Priority Date: 09/09/2009
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an input/output (I/O) interface configured to couple a controller to an I/O buffer of a memory device;

    an erase module coupled to the I/O interface, wherein the erase module is configured to issue an instruction to the memory device to erase data from the memory device; and

    an erase suspend module coupled to the I/O interface, the erase suspend module configured to determine that an erase operation executing within the memory device satisfies a suspend policy in response to receiving a memory access request to perform an operation on the memory device on which the erase operation is executing and to issue a suspend command to the memory device to suspend the erase operation, the suspend policy comprising one or more of suspending the erase operation in response to determining that the erase operation is less than halfway completed, suspending the erase operation up to a maximum number of times for suspending a single erase operation, and suspending the erase operation based on an expected rate of memory access requests to the memory device.

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