Energy recovery latch circuit with set and reset function

Abstract

The related energy-recovery latch circuit with set and reset function comprises: the gating devices MN1, MN2, MP1 and MP2 with power clock controlled by set/reset signal; a couple of unilateral conductive devices D1 and D2 to charge the differential output nodes; a couple of PMOS tubes MP3 and MP4 to control the pre-charge branch by input signal and its complementary signal D and Db for latch; a couple of PMOS tubes MP5 and MP6 to control the pre-charge branch by set/reset complementary signal Sb and Rb for set/reset; a couple of NMOS tubes MN3 and MN4 for logical operation, a couple of NMOS tubes MN5 and MN6 for set/reset, and a couple of NMOS tubes MN7 and MN8 for cross coupling output. This invention just needs very low power consumption for logic sequence control.

Description

technical field [0001] The invention belongs to the technical field of low-power integrated circuit design, and in particular relates to an energy recovery latch circuit with a set / reset function, which is used in a sequential logic circuit of a semi-insulated circuit. Background technique [0002] Adiabatic Circuit Technique (Adiabatic Circuit Technique), also known as charge recovery technology, is a new low-power technology that has emerged in the past ten years. Because the power consumption of circuits designed with this technology can be significantly reduced (theoretically, it can be reduced is zero), now it has become a hot spot in low power consumption research and an important research direction in the field of low power consumption integrated circuit technology. [0003] Traditional latches are composed of CMOS circuits. We know that the dynamic power consumption of CMOS circuits is an important component of the overall power consumption of the circuit, and it som...

AI Technical Summary

Problems solved by technology

The former can achieve zero power consumption in theory, but reversible logic must be used in the circuit to complete the function of the circuit. This kind of circuit structure is complex and requires a large number of pulse power sources, which is very difficult to realize; while the latter is relatively It is said that the structure of the circuit is relatively simple, there is no limitation of reversible logic, the pulse power used in the circuit is relatively small, and it is relatively easy to apply

However, the charge recovery efficiency of this circuit has a theoretical limit. When the circuit completes the logic function, it must consume a certain proportion of energy, at least Es=(1 / 2)·C g ·V th 2 , this part of the power dissipation is the non-adiabatic power dissipation

[0012] Due to the potential huge practical value of semi-adiabatic circuits, research on semi-adiabatic circuits has been very active internationally in recent years. Not only have many new types of adiabatic circuit structures emerged, but these latches have an obvious shortcoming: the output The signal does not have a set / reset control, that is, these adiabatic latches do not have a set / reset function

Therefore, the application range of adiabatic circuits in the field of sequential logic circuit design is greatly limited.

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