Delayed write-back in memory with calibration support

A method for operation of a memory that includes a non-volatile memory array and a first cache, the method comprising:

• receiving a first command to access data in the memory;
• in response to receiving the first command:
• determining that the memory is in a non-destructive mode, wherein in the non-destructive mode, data stored in the non-volatile memory array is not disturbed;
• and
• accessing data in the first cache;
• after accessing the data in the first cache, transitioning the memory from the non-destructive mode to normal mode;
• and
• in response to a change in a value stored in a register, the change indicating that the memory is transitioning from the non-destructive mode to the normal mode, clearing status bits indicating open pages in the memory.

A method for controlling a memory, comprising:

• issuing a plurality of calibration commands to the memory, wherein the plurality of calibration commands correspond to a calibration sequence executed while the memory is in a non-destructive mode;
• and
• after issuing the plurality of calibration commands, providing at least one signal to the memory, wherein providing at least one signal to the memory comprises:
• issuing a register access command to the memory;
• and
• providing a value to the memory for storage in the register, wherein, when stored in the register, the value causes the memory to transition from the non-destructive mode to the normal mode, and
• wherein in response to the value being stored in the register, the memory:
• transitions from the non-destructive mode to a normal mode;
• and
• clears status bits on the memory indicating open pages in the memory.