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

專利號(hào)
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

Example 3a: The apparatus of example 2a, wherein the logic comprises: an inverter which is coupled to the AND gate; and a NAND gate coupled to an output of the inverter, wherein an output of the NAND gate is coupled a 3-input majority gate of the 1-bit full adder, wherein the NAND gate is to receive a first reset to condition the output of the NAND gate during the reset phase.

Example 4a: The apparatus of example 3a, wherein the inverter is a first inverter, wherein the logic comprises: a first NOR gate coupled to an output of the inverter, wherein the first NOR gate receives a second reset, wherein the second reset is inverse of the first reset, wherein an output of the first NOR gate is coupled to a 5-input majority gate of the 1-bit full adder, wherein the second reset is to condition the output of the first NOR gate during the reset phase; a second inverter which is coupled to the 3-input majority gate; and a second NOR gate coupled to an output of the second inverter, wherein the second NOR gate is controllable by the second reset, wherein an output of the second NOR gate is a carry output, wherein the second reset is to condition the output of the second NOR gate during the reset phase.

Example 5a: The apparatus of example 4a comprises a third inverter coupled to the output of the second NOR gate, wherein an output of the third inverter is coupled to the 5-input majority gate.

Example 6a: The apparatus of example 5a, wherein the logic comprises: a fourth inverter coupled to the 5-input majority gate; and a third NOR gate coupled to an output of the fourth inverter, wherein the third NOR gate is controllable by the second reset, wherein the second reset is to condition the output of the third NOR gate during the reset phase, wherein the output of the third NOR gate is a sum output.

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