Clocked all-spin logic circuit
Described is a latch comprising: a first all-spin logic (ASL) device; a second ASL device coupled to the first ASL device, the second ASL device controllable by a clock signal; and a third ASL device coupled to the second ASL device, wherein the first and third ASL devices have respective magnets coupled to a power supply terminal. Described is a flip-flop which comprises: a first ASL device; a second ASL device coupled to the first ASL device, the second ASL device controllable by a first clock signal; a third ASL device coupled to the second ASL device, the third ASL device controllable by a second clock signal, the second clock signal being out of phase relative to the first clock signal; and a fourth ASL device coupled to the third ASL device, wherein the first and fourth ASL devices have respective magnets coupled to a power supply terminal.
1. An apparatus comprising:
a first ferromagnet;
a second ferromagnet coupled to the first ferromagnet, the second ferromagnet is controlled by a clock signal during operation; and
a third ferromagnet coupled to the second ferromagnet, wherein the first and third ferromagnets have respective magnets coupled to a power supply terminal.
2. The apparatus of claim 1 , wherein each of the first, second, and third ferromagents form a first, second, and third all-spin logic (ASL) devices respectively, each of which includes:
a magnet with a first terminal, the magnet extending in a first direction;
a non-magnet with a second terminal, the non-magnet extending in a second direction different from the first direction; and
a non-conductor coupled to the magnet, the non-conductor extending in the second direction to isolate a first portion of a non-magnet interconnect from a second portion of the non-magnet interconnect, the second portion coupled to the magnet and the non-magnet, the non-magnet interconnect extending in the first direction.
3. The apparatus of claim 2 , wherein the first terminal is coupled to a power supply terminal for the first ASL device.
4. The apparatus of claim 2 , wherein the first terminal is coupled to the clock signal for the second ASL device.
5. The apparatus of claim 2 , wherein the first terminal is coupled to a power supply terminal for the third ASL device.
6. The apparatus of claim 2 , wherein the second terminal is coupled to ground.
7. The apparatus of claim 2 , wherein the first terminal for each of the ASL devices is independently controllable to be coupled to a positive power supply, a negative power supply, or a floating node.
8. The apparatus of claim 7 further comprises a clock gating control circuit to provide a control signal for independently controlling coupling of the first terminal to a positive power supply, a negative power supply, or a floating node.
9. The apparatus of claim 1 , wherein the power supply terminal is coupled to at least one of:
a positive power supply;
a negative power supply; or
a floating node.
10. An apparatus comprising:
a first ferromagnet;
a second ferromagnet coupled to the first ferromagnet, the second ferromagnet is controlled by a first clock signal during operation;
a third ferromagnet coupled to the second ferromagnet, the third ferromagnet is controlled by a second clock signal during operation, the second clock signal being out of phase relative to the first clock signal; and
a fourth ferromagnet coupled to the third ferromagnet, wherein the first and fourth ferromagnets have respective magnets coupled to a power supply terminal.
11. The apparatus of claim 10 , wherein each of the first, second, third, and fourth ferromagnet form a first, second, third, and fourth all-spin logic (ASL) devices respectively, each of which include:
a magnet with a first terminal, the magnet extending in a first direction;
a non-magnet with a second terminal, the non-magnet extending in a second direction different from the first direction; and
a non-conductor coupled to the magnet, the non-conductor extending in the second direction to isolate a first portion of a non-magnet interconnect from a second portion of the non-magnet interconnect, the second portion coupled to the magnet and the non-magnet, the non-magnet interconnect extending in the first direction.
12. The apparatus of claim 11 , wherein the first terminal is coupled to a power supply terminal for the first ASL device.
13. The apparatus of claim 11 , wherein the first terminal is coupled to the first clock signal for the second ASL device.
14. The apparatus of claim 11 , wherein the first terminal is coupled to the second clock signal for the third ASL device.
15. The apparatus of claim 11 , wherein the first terminal is coupled to a power supply terminal for the fourth ASL device.
16. The apparatus of claim 11 , wherein the second terminal is coupled to ground.
17. The apparatus of claim 11 , wherein the first terminal for each of the ASL devices is independently controllable to be coupled to a positive power supply, a negative power supply, or a floating node.
18. The apparatus of claim 17 further comprises a clock gating control circuit to provide a control signal for independently controlling coupling of the first terminal to a positive power supply, a negative power supply, or a floating node.
19. The apparatus of claim 10 , wherein the power supply terminal is coupled to at least one of:
a positive power supply;
a negative power supply; or
a floating node.
20. A system comprising:
a memory;
a processor coupled to the memory, the processor having a latch which includes:
a first ferromagnet;
a second ferromagnet coupled to the first ferromagnet, the second ferromagnet is controlled by a clock signal during operation; and
a third ferromagnet coupled to the second ferromagnet, wherein the first and third ferromagnets have respective magnets coupled to a power supply terminal; and
a wireless interface for allowing the processor to communicate with another device.
21. The system of claim 20 further comprises a display unit.