Data storage device with enhanced power mode management
A data storage device includes a non-volatile memory device having one or more memory dies and each of the memory dies include a plurality of input-output (I/O) lines. The data storage device further includes a controller. The controller is configured to receive an instruction to enter a low-power operating mode. Entering the low-power operating mode includes removing power from the one or more memory dies, providing an output signal toggling between a logic high and a logic low at a predetermined frequency to the plurality of I/O lines for a predetermined period of time, and operating in the low-power operating mode upon the expiration of the predetermined period of time.
1. A data storage device, comprising:
a non-volatile memory device including one or more memory dies, wherein each of the one or more memory dies include a plurality of input-output (I/O) lines; and
a controller configured to:
enter a low-power operating mode by:
removing power from the one or more memory dies,
providing an output signal toggling between a logic high and a logic low at a predetermined frequency to the plurality of I/O lines for a predetermined period of time, and
operating in the low-power operating mode upon an expiration of the predetermined period of time.
2. The data storage device of claim 1 , further comprising a power supply circuit configured to provide power to the one or more memory dies.
3. The data storage device of claim 2 , wherein the controller is further configured to:
activate a write protect input of the non-volatile memory device to write protect the one or more memory dies upon entering the low-power operating mode;
apply a lower-level voltage to one or more power rails of the non-volatile memory device using the power supply circuit while in the low-power mode; and
maintain the activation of the write protect input and the application of the lower-level voltage while in the low-power operating mode,
wherein the lower-level voltage is less than a normal operating mode voltage.
4. The data storage device of claim 3 , wherein the lower-level voltage is 20% of the normal operating mode voltage.
5. The data storage device of claim 3 , wherein the application of the lower-level voltage to the one or more power rails reduces a time required to enter a normal operation mode by 20% versus not applying the lower-level voltage to the one or more power rails.
6. The data storage device of claim 1 , wherein the predetermined frequency is greater than 100 kHz.
7. The data storage device of claim 1 , wherein toggling the I/O lines reduces a time required to enter the low-power operating mode by 20% versus when not toggling the I/O lines.
8. A method performed by a data storage device having a controller coupled to a non-volatile memory device, the method comprising:
receiving an instruction to enter a low-power operating mode; and
entering the low-power operating mode by:
removing power from one or more memory dies of the non-volatile memory device,
providing an output signal toggling between a logic high and a logic low to one or more input-output lines of the non-volatile memory device for a predetermined period of time, and
operating in the low-power operating mode upon an expiration of the predetermined period of time.
9. The method of claim 8 , wherein the toggling is performed at a predetermined frequency.
10. The method of claim 9 , wherein the predetermined frequency is greater than 100 kHz.
11. The method of claim 8 , further comprising:
activating a write protect input of the non-volatile memory device;
applying a lower-level voltage to one or more power rails of the non-volatile memory device; and
maintaining the activation of the write protect input and the application of the lower-level voltage while in the low-power operating mode,
wherein the lower-level voltage is less than a normal operating mode voltage.
12. The method of claim 11 , wherein the lower-level voltage is 20% of the normal operating mode voltage.
13. The method of claim 11 , wherein application of the lower-level voltage to the one or more power rails reduces a time to enter a normal operation mode by 20% voltage versus not applying the lower-level voltage to the one or more power rails.
14. The method of claim 8 , wherein toggling the input-output lines reduces a time required to enter the low-power operating mode by 20% versus when not toggling the I/O lines.
15. A data storage device, comprising:
a non-volatile memory device including one or more memory dies, wherein each of the one or more memory dies include a plurality of input-output (I/O) lines;
a power supply circuit configured to provide power to the data storage device; and
a controller configured to:
receive an instruction to enter a low-power operating mode,
enter the low-power operating mode by:
removing power from the one or more memory dies
providing an output signal toggling between a first voltage level and a second voltage level at a predetermined frequency to the plurality of I/O lines, and
removing the output signal upon a voltage of the plurality of I/O lines falling below a predetermined threshold;
activate a write protect input of the non-volatile memory device to write protect the one or more memory dies upon entering the low-power operating mode,
apply a lower-level voltage to one or more power rails of the non-volatile memory device using the power supply circuit, and
maintain the activation of the write protect input and the application of the lower-level voltage while in the low-power operating mode,
wherein the lower-level voltage is less than a normal operating mode voltage.
16. The data storage device of claim 15 , wherein the predetermined frequency is at least 100 kHz.
17. The data storage device of claim 15 , wherein the lower-level voltage is 20% of the normal operating mode voltage.
18. The data storage device of claim 15 , wherein the application of the lower-level voltage to the one or more power rails reduces a time required to enter a normal operation mode by 20% versus not applying the low-level voltage to the one or more power rails.
19. The data storage device of claim 15 , wherein toggling the I/O lines reduces a time required to enter the low-power operating mode by 20% versus when not toggling the I/O lines.