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Main word line driver circuit

專利號
US10867661B2
公開日期
2020-12-15
申請人
Micron Technology, Inc.(US ID Boise)
發(fā)明人
Tae H. Kim; Christopher J. Kawamura
IPC分類
G11C7/22; G11C11/408; G11C11/4076
技術(shù)領(lǐng)域
word,transistor,gr0,voltage,swd,swds,volts,vnwl,nmos,vccp
地域: ID ID Boise

摘要

A main word line circuit provides a first and second row factor signals. The main word line circuit includes a pull-up circuit to drive a global word line to follow a first decoded address signal when the first row factor signal is at a first value. The main word line circuit includes an intermediate voltage circuit to drive the global word line to follow a value of the second row factor signal. A processing device drives the global word line to an active state by setting the first row factor signal to the first value when the first decoded address signal is at a high state, and drives the global word line to follow a value of the second row factor signal by setting the first row factor signal to the second value while the first decoded address signal is at the high state.

說明書

FIG. 3A illustrates an exemplary embodiment of a main word line driver 300. The MWD 300 can include a transistor 302 of a first type, such as, for example, a PMOS transistor, having a source coupled to a signal ARMW. The voltage of signal ARMW and its complement ARMWF can correspond to a decoded address signal such as, for example, the first portion of a decoded row address. For example, the decoded row address ARMW (ARMWF) can correspond to one or more MWDs of a memory bank MB. The drain of the transistor 302 can be connected to a drain of transistor 304 that can be different from the first type, such as, for example a NMOS transistor. The interconnected drains of the transistors 302, 304 are coupled to a global word line GR. The source of transistor 304 can be connected to a voltage source that can be, for example, in a range of ?0.25 volts to 0 volts. For example, as seen in FIG. 3A, the voltage source is at Vnwl. However, in other embodiments, the voltage source can be at Vss or at some other low voltage value. The gate of the transistor 304 can be connected to the ARMWF signal. The gate of the transistor 302 is driven by the RFF signal. The RFF and RF signals can correspond to a portion of a decoded row address that can relate to, for example, one or more MWDs of a memory bank MB.

權(quán)利要求

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