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    • 4. 发明授权
    • Structures for electrostatic discharge protection of electrical and
other components
    • 电气和其他部件的静电放电保护结构
    • US5341267A
    • 1994-08-23
    • US763964
    • 1991-09-23
    • Ralph G. WhittenTa-Pen GuoAmr MohsenAlan E. Comer
    • Ralph G. WhittenTa-Pen GuoAmr MohsenAlan E. Comer
    • H01L23/60H02H9/00H01H37/76
    • H01L23/60H01L2924/0002H01L2924/3011
    • A first passive ESD protection device for an electronic component in a microcircuit includes a fuse element shunting the component to be protected and includes a passive programming path from the outside of the microcircuit to the fuse element. A second passive ESD protection device is deactivatable and reactivatable and includes a first fuse element shunted by a second fuse element in series with a first antifuse element. Shunting the second fuse element with a third fuse element in series with a second antifuse element permits a second deactivation and reactivation to be performed. Additional deactivation/reactivation cycles may be permitted by providing additional series combinations of fuse elements and antifuse elements shunting the preceding fuse element. Combinations of the passive protection device and dual elements comprise ESD protection schemes which may be deactivated and activated multiple times.
    • 用于微电路中的电子部件的第一无源ESD保护装置包括分流待保护的部件的熔丝元件,并且包括从微电路的外部到熔丝元件的无源编程路径。 第二无源ESD保护装置是可去激活的并且可再生的,并且包括由与第一反熔丝元件串联的第二熔丝元件分流的第一熔丝元件。 利用与第二反熔丝元件串联的第三熔丝元件来分流第二熔丝元件允许执行第二失活和重新激活。 可以通过提供分流前一个熔丝元件的熔丝元件和反熔丝元件的附加串联组合来允许附加的去激活/重新激活循环。 被动保护装置和双重元件的组合包括ESD保护方案,其可以被多次停用和激活。
    • 6. 发明授权
    • Voltage level shifter
    • 电压电平转换器
    • US07940108B1
    • 2011-05-10
    • US12692884
    • 2010-01-25
    • Guang-Cheng WangTa-Pen Guo
    • Guang-Cheng WangTa-Pen Guo
    • H03L5/00
    • H03K19/018528
    • A circuit, includes first, second, and third inverters. The first inverter has a first input coupled to a first port and a first output coupled to a second port. The second inverter has a second input coupled to the second port and a second output coupled to the first port. The third inverter has a third input coupled to the first port through a first capacitor and to a third port. The third inverter has an output coupled to the second port through a second capacitor. The circuit receives a signal having a voltage between a first voltage potential and a second voltage potential and in response outputs a signal having a voltage between the second voltage potential and a third voltage potential. The third voltage potential is higher than the first and second voltage potentials with respect to ground.
    • 电路包括第一,第二和第三逆变器。 第一反相器具有耦合到第一端口的第一输入端和耦合到第二端口的第一输出端。 第二反相器具有耦合到第二端口的第二输入端和耦合到第一端口的第二输出端。 第三反相器具有通过第一电容器耦合到第一端口的第三输入端和第三端口。 第三反相器具有通过第二电容器耦合到第二端口的输出。 电路接收具有第一电压电位和第二电压电位之间的电压的信号,并且响应于输出具有在第二电压电位和第三电压电位之间的电压的信号。 第三电压电位高于相对于地的第一和第二电压电位。
    • 9. 发明授权
    • Memory cell with user-selectable logic state on power-up
    • 上电时用户可选逻辑状态的存储单元
    • US5400294A
    • 1995-03-21
    • US162585
    • 1993-12-06
    • Adi SrinivasanTa-Pen Guo
    • Adi SrinivasanTa-Pen Guo
    • G11C7/20G11C7/22G11C11/40
    • G11C7/20G11C7/22
    • Apparatus for forcing a memory cell to a user-selected logic level upon power-up includes circuitry for providing two signals PWRUP and PWRUPB which are used during chip power-up. At power-up, as V.sub.CC rises from 0 volt to 3.5 volts, the PWRUP signal follows V.sub.CC and the PWRUPB signal maintains 0 volts. The PWRUP and PWRUPB signals are used to drive the gates of P-Channel and N-Channel MOS transistors, respectively, including pass gates connected between word line driver circuits and bit line driver circuits driving the word lines and bit lines associated with the memory cells. In addition, the PWRUPB signal is used to drive P-Channel MOS pullup transistors connected between the word lines and V.sub.CC and bit lines and V.sub.CC. During power-up, the pass gates are disabled, disconnecting the word lines and bit lines from their drivers. The word lines and bit lines are forced to follow the rise of V.sub.CC by the P-Channel pullup transistors. When V.sub.CC reaches its desired value, the PWRUP signal goes to 0 volts and the PWRUPB signal goes to V.sub.CC, thus turning on the pass gates to connect the word line and bit line driver circuits to the word lines and bit lines. The V.sub.CC final PWRUPB signal turns off the P-Channel MOS pullup transistors connected between the word lines and V.sub.CC and the bit lines and V.sub.CC.
    • 用于在上电时将存储器单元强制为用户选择的逻辑电平的装置包括用于提供在芯片上电期间使用的两个信号PWRUP和PWRUPB的电路。 上电时,当VCC从0伏升至3.5伏时,PWRUP信号遵循VCC,PWRUPB信号保持0伏。 PWRUP和PWRUPB信号分别用于驱动P沟道和N沟道MOS晶体管的栅极,包括连接在字线驱动电路和驱动与存储单元相关联的字线和位线驱动电路之间的通路 。 此外,PWRUPB信号用于驱动连接在字线与VCC和位线和VCC之间的P沟道MOS上拉晶体管。 在上电期间,禁止通过门,将字线和位线与驱动器断开。 字线和位线被迫通过P沟道上拉晶体管跟随VCC的上升。 当VCC达到所需值时,PWRUP信号变为0伏,PWRUPB信号变为VCC,从而打开通过门,将字线和位线驱动电路连接到字线和位线。 VCC最终PWRUPB信号关闭连接在字线和VCC与位线和VCC之间的P沟道MOS上拉晶体管。