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Non-linear polar material based low power multiplier with NOR and NAND gate based reset mechanism

專利號
US11888479B1
公開日期
2024-01-30
申請人
Kepler Computing Inc.(US CA San Francisco)
發(fā)明人
Amrita Mathuriya; Rafael Rios; Ikenna Odinaka; Rajeev Kumar Dokania; Sasikanth Manipatruni
IPC分類
H03K19/23; H03K19/0185; G06F7/487; H03K19/017; G06F7/501; H03K19/17736
技術領域
reset,gate,majority,pull,capacitors,adder,minority,multiplier,gates,node
地域: CA CA San Francisco

摘要

A multiplier cell is derived from a 1-bit full adder and an AND gate. The 1-bit full adder is derived from majority and/or minority gates. The majority and/or minority gates include non-linear polar material (e.g., ferroelectric or paraelectric material). A reset mechanism is provided to reset the nodes across the non-linear polar material. The multiplier cell is a hybrid of majority and/or minority gates and complementary metal oxide semiconductor (CMOS) based inverters and/or buffers. The adder uses a non-linear polar capacitor to retain charge with fewer transistors than traditional CMOS sequential circuits. The non-linear polar capacitor includes ferroelectric material, paraelectric material, or non-linear dielectric. Input signals are received by respective terminals of capacitors having non-linear polar material. The other terminals of these capacitors are coupled to a node where the majority function takes place for the inputs.

說明書

The embodiments of the disclosure will be understood more fully from the detailed description given below and from the accompanying drawings of various embodiments of the disclosure, which, however, should not be taken to limit the disclosure to the specific embodiments, but are for explanation and understanding only.

FIG. 1 illustrates a set of plots showing behavior of a ferroelectric capacitor, a paraelectric capacitor, and a linear capacitor.

FIG. 2 illustrates a 3-input majority or minority gate with non-linear input capacitors, in accordance with some embodiments.

FIG. 3A illustrates a multiplier cell comprising a 1-bit full adder and an AND gate, wherein the multiplier cell comprises a reset mechanism, wherein at least one of the 1-bit full adder and/or the AND gate comprise ferroelectric or paraelectric material, in accordance with some embodiments.

FIG. 3B illustrates a multiplier cell having a 1-bit full adder and an AND gate using majority or minority gates with non-linear input capacitors (e.g., ferroelectric capacitor), in accordance with some embodiments.

FIG. 4 illustrates an N×N multiplier array, wherein each cell of the array includes a 1-bit full adder and an AND gate, wherein at least one of the 1-bit full adder and/or the AND gate comprise ferroelectric or paraelectric material, in accordance with some embodiments.

權利要求

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