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    • 3. 发明公开
    • Flash memory with improved erasability and its circuitry
    • 闪光灯BessereLöschbarkeit和Schaltungen dazu
    • EP1168362A2
    • 2002-01-02
    • EP01121238.8
    • 1992-12-09
    • FUJITSU LIMITED
    • Akaogi, TakaoKawashima, HiromiTakeguchi, TetsujiHagiwara, RyojiKasa, YasushiItano, KiyoshiKawamura, ShouichiOgawa, Yasushige
    • G11C16/06
    • G11C29/82G05F3/205G11C5/145G11C16/0416G11C16/08G11C16/16G11C16/30H03K3/356147H03K3/356165H03K19/018521H03K19/215
    • A flash memory comprises a cell matrix, in which rewritable nonvolatile memory cells (591ij) are arranged at intersections between a plurality of word lines (WLi) and a plurality of bit lines (BLi), and also comprises row decoders (587) for applying specified voltage selectively to the word lines (WLi) during writing or reading. The flash memory further comprises: switch circuits (590i) that are located between the cell matrix and the row decoder (587) in association with the word lines, and that enter a cutoff state when the word lines are set to negative voltage and enter a conducting state on any other occasion; negative-voltage bias circuits (592) whose negative-voltage output terminals (554) are connected to the word lines (WLi), and that apply the voltage output of a negative power supply to the word lines in response to a clock pulse (CLK) ; and clock pulse control circuits (593, 594) for causing the clock pulse (CLK) to be supplied to the negative-voltage bias circuit when it is detected during erasing that the word lines (WLi) are selected. The word lines (WLi) are divided into a plurality of groups and the clock pulse control circuits (593, 594) are operable to cause the clock pulse (CLK) to be supplied to each of the negative-voltage bias circuits connected to the selected word lines in a group when any word lines in the group are selected.
    • 闪存包括单元矩阵,其中可重写非易失性存储单元(591ij)布置在多个字线(WLi)和多个位线(BLi)之间的交叉处,并且还包括用于施加的行解码器(58​​7) 在写入或读取期间选择性地将字线(WLi)指定电压。 闪存还包括:与字线相关联地位于单元矩阵和行解码器(58​​7)之间的开关电路(590i),并且当字线被设置为负电压并进入 在任何其他场合进行国家; 其负电压输出端子(554)连接到字线(WLi)的负电压偏置电路(592),并且响应于时钟脉冲(CLK)将负电源的电压输出施加到字线 ); 以及时钟脉冲控制电路(593,594),用于当擦除字线(WLi)被选择时检测到时钟脉冲(CLK)被提供给负电压偏置电路。 字线(WLi)被分成多个组,时钟脉冲控制电路(593,594)可操作以使时钟脉冲(CLK)被提供给连接到所选择的每个负电压偏置电路 选择组中的任何字线时,组中的字线。
    • 8. 发明公开
    • Interface latch for data level transfer
    • SchnittstellenverriegelungfürDatenpegelübertragung
    • EP1184983A1
    • 2002-03-06
    • EP00830595.5
    • 2000-08-31
    • STMicroelectronics S.r.l.
    • Adduci, FrancescoBona, ClaudioFassina, Andrea
    • H03K3/356H03K17/10H03K19/003H03K19/007
    • H03K3/356113H03K3/356165H03K17/102H03K19/003H03K19/007
    • The invention comprises an interface for translating data of different voltages. It includes an input terminal (52) structured to accept an input from a circuit supplied by a power supply having a first voltage level, as well as an output terminal structured to provide an output from the interface. A first circuit portion is powered by a power supply having the first voltage level (SUPPLYLOW). A second circuit portion is powered by a power supply having a second voltage level (SUPPLYHIGH). The invention advantageously comprises a power supply detection circuit (M20, M21) structured to accept a detection signal (VCCOFF). This detection circuit is coupled to the first and second circuit portions and structured to maintain a correct output at the output terminal (62) even after the power supply having the first voltage level (SUPPLYLOW) no longer supplies the first voltage level to the interface.
    • 本发明包括用于转换不同电压的数据的接口。 它包括一个输入端(52),其被构造为接受来自由具有第一电压电平的电源提供的电路的输入,以及被构造成提供来自该接口的输出的输出端。 第一电路部分由具有第一电压电平(SUPPLYLOW)的电源供电。 第二电路部分由具有第二电压电平(SUPPLYHIGH)的电源供电。 本发明有利地包括被构造为接受检测信号(VCCOFF)的电源检测电路(M20,M21)。 即使在具有第一电压电平(SUPPLYLOW)的电源不再向接口提供第一电压电平之后,该检测电路耦合到第一和第二电路部分并被构造为在输出端子(62)处保持正确的输出。
    • 9. 发明公开
    • Flash memory with improved erasability and its circuitry
    • 具有改进的可擦除性和电路的闪存
    • EP0961289A2
    • 1999-12-01
    • EP99115179.6
    • 1992-12-09
    • FUJITSU LIMITED
    • Akaogi, TakaoKawashima, HiromiTakeguchi, TetsujiHagiwara, RyojiKasa, YasushiItano, KiyoshiKawamura, ShouichiOgawa, Yasushige
    • G11C16/06
    • G11C29/82G05F3/205G11C5/145G11C16/0416G11C16/08G11C16/16G11C16/30H03K3/356147H03K3/356165H03K19/018521H03K19/215
    • A flash memory which includes a memory cell array (271) in which a plurality of nonvolatile memory cells that can be erased electrically are set in array and decoding units (273) that decode a plurality of signals and access said memory cell array (271), further comprises: drive units (274) each of which includes a first power terminal (275) and a second power terminal (276), inputs the output of the decoding unit (273), and selectively outputs a voltage applied to the first power terminal (275) or a voltage approximate to that voltage, and a voltage applied to the second power terminal or a voltage approximate to that voltage; the drive unit (274) assuming a first operation mode, in which a first voltage is applied to the first power terminal (275) and a second voltage that is lower than the first voltage is applied to the second power terminal (276), and a second operation mode, in which a third voltage is applied to the first power terminal (275) and a fourth voltage that is higher than the third voltage is applied to the second power terminal (276); and selecting an output voltage depending on whether the first or second operation mode is specified.
    • 一种闪速存储器,其包括:存储单元阵列(271),其中可以电擦除的多个非易失性存储单元被设置在阵列中,并且解码多个信号并访问所述存储单元阵列(271)的解码单元(273) 还包括:各包括第一电源端子(275)和第二电源端子(276)的驱动单元(274),输入解码单元(273)的输出,并且选择性地输出施加到第一电源 端子(275)或接近该电压的电压以及施加到第二电源端子的电压或接近该电压的电压; 驱动单元(274)呈现第一操作模式,其中向第一电源端子(275)施加第一电压并且向第二电源端子(276)施加低于第一电压的第二电压,以及以及 第二操作模式,其中向所述第一电源端子(275)施加第三电压,并且向所述第二电源端子(276)施加高于所述第三电压的第四电压; 并根据是否指定第一或第二操作模式来选择输出电压。
    • 10. 发明公开
    • Static latch circuit and static logic circuit
    • Statische Verriegelungsschaltung und statischer Logikschaltkreis
    • EP0926825A2
    • 1999-06-30
    • EP98124596.2
    • 1998-12-23
    • NEC CORPORATION
    • Kanno, Hiroshi
    • H03K3/356H03K19/017
    • H03K3/356165H03K19/0016
    • A static latch circuit and a static logic circuit can be easily designed without gate width and gate length optimization while using transistors with the smallest usable gate width to reduce power consumption. The resulting static latch circuit and static logic circuit can be used in applications where all gate lengths must be the same. The drive capacity of parts associated with the static holding function of the latch circuit and logic circuit is reduced by using a step-down circuit and step-up circuit to reduce the effective supply voltage during operation.
    • 可以容易地设计静态锁存电路和静态逻辑电路,而不需要栅极宽度和栅极长度优化,同时使用具有最小可用栅极宽度的晶体管来降低功耗。 所产生的静态锁存电路和静态逻辑电路可用于所有栅极长度必须相同的应用中。 通过使用降压电路和升压电路来减少与锁存电路和逻辑电路的静态保持功能相关的部件的驱动能力,以降低操作期间的有效电源电压。