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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(shù)領(lǐng)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

FIG. 7B illustrates a 1-bit full adder with a reset mechanism having two NOR gates, wherein the 1-bit-full adder includes majority or minority gates with ferroelectric capacitors, in accordance with some embodiments.

FIG. 8A illustrates a multiplier cell having a 1-bit full adder using majority or minority gates with ferroelectric capacitors and with reset mechanism comprising NOR gates that are sequentially reset, in accordance with some embodiments.

FIG. 8B illustrates a timing diagram for pull-up and pull-down events on the summation node of the majority or minority gates.

FIG. 8C illustrates a 1-bit full adder with a reset mechanism having two NOR gates, wherein the 1-bit-full adder includes majority or minority gates with ferroelectric capacitors that are sequentially reset, in accordance with some embodiments.

FIG. 9 illustrates a high-level majority-gate implementation of a multiplier-cell that is reset in multiple cycles, in accordance with some embodiments.

FIG. 10 illustrates a majority-gate chain comprising ferroelectric capacitors, wherein the majority-gate chain is sequentially reset, in accordance with some embodiments.

FIG. 11 illustrates a minority-gate chain comprising ferroelectric capacitors, wherein the minority-gate chain is sequentially reset, in accordance with some embodiments.

權(quán)利要求

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