Managed NAND performance throttling

1. A memory device comprising:

a non-volatile memory array;

a memory controller configured to perform the operations comprising:

determining that a condition has occurred that indicates a performance throttling operation;

implementing a performance throttling responsive to the determined condition;

responsive to implementing the performance throttling, setting a performance throttling status indicator in an exception event status attribute;

receiving a read or write command from a host device across a memory device interface;

performing the read or write command;

preparing a response to the read or write command, the response including a flag indicating that the performance throttling status indicator is set in the exception event status attribute; and

sending the response to the host device.

2. The memory device of claim 1 , wherein the response is formatted as a Universal Flash Storage Protocol Information Unit (UPIU) message.

3. The memory device of claim 1 , wherein the host device and the memory device communicate using a Universal Flash Storage family of standards.

4. The memory device of claim 1 , wherein the memory controller is further configured to perform the operations of:

setting a throttling status attribute to a value indicating the condition.

5. The memory device of claim 1 , wherein the operations of including the flag indicating that the performance throttling status indicator is set comprises determining that a control attribute has an indicator set corresponding to the performance throttling status indicator, the indicator in the control attribute set by the host.

6. The memory device of claim 1 , wherein the condition is a temperature reading of a temperature sensor of the memory device transgressing a threshold.

7. The memory device of claim 1 , wherein the performance throttling comprises: reducing a number of parallel accesses to memory cells of the memory device or reducing a speed at which the memory cells are accessed.

8. A method of performance throttling at a memory device, the method comprising:

determining that a condition has occurred that indicates a performance throttling operation;

implementing a performance throttling responsive to the determined condition;

responsive to implementing the performance throttling, setting a performance throttling status indicator in an exception event status attribute;

receiving a read or write command from a host device across a memory device interface;

performing the read or write command;

preparing a response to the read or write command, the response including a flag indicating that the performance throttling status indicator is set in the exception event status attribute; and

sending the response to the host device.

9. The method of claim 8 , wherein the response is formatted as a Universal Flash Storage Protocol Information Unit (UPIU) message.

10. The method of claim 8 , wherein the host device and the memory device communicate using a Universal Flash Storage family of standards.

11. The method of claim 8 , further comprising:

setting a throttling status attribute to a value indicating the condition.

12. The method of claim 8 , wherein including the flag indicating that the performance throttling status indicator is set comprises determining that a control attribute has an indicator set corresponding to the performance throttling status indicator, the indicator in the control attribute set by the host.

13. The method of claim 8 , wherein the condition is a temperature reading of a temperature sensor of the memory device transgressing a threshold.

14. The method of claim 8 , wherein the performance throttling comprises: reducing a number of parallel accesses to memory cells of the memory device or reducing a speed at which the memory cells are accessed.

15. A non-transitory machine-readable medium, storing instructions, which when executed by a memory device, causes the memory device to perform operations comprising:

determining that a condition has occurred that indicates a performance throttling operation;

implementing a performance throttling responsive to the determined condition;

responsive to implementing the performance throttling, setting a performance throttling status indicator in an exception event status attribute;

receiving a read or write command from a host device across a memory device interface; performing the read or write command;

preparing a response to the read or write command, the response including a flag indicating that the

performance throttling status indicator is set in the exception event status attribute; and

sending the response to the host device.

16. The machine-readable medium of claim 15 , wherein the response is formatted as a Universal Flash Storage Protocol Information Unit (UPIU) message.

17. The machine-readable medium of claim 15 , wherein the host device and the memory device communicate using a Universal Flash Storage family of standards.

18. The machine-readable medium of claim 15 , wherein the instructions further comprise:

setting a throttling status attribute to a value indicating the condition.

19. The machine-readable medium of claim 15 , wherein the operations of including the flag indicating that the performance throttling status indicator is set comprises determining that a control attribute has an indicator set corresponding to the performance throttling status indicator, the indicator in the control attribute set by the host.

20. The machine-readable medium of claim 15 , wherein the condition is a temperature reading of a temperature sensor of the memory device transgressing a threshold.

21. The machine-readable medium of claim 15 , wherein the performance throttling comprises:

reducing a number of parallel accesses to memory cells of the memory device or reducing a speed at which the memory cells are accessed.