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    • 2. 发明授权
    • Integrated redundancy architecture system for an embedded DRAM
    • 嵌入式DRAM的集成冗余架构系统
    • US06542973B2
    • 2003-04-01
    • US09898434
    • 2001-07-03
    • Louis L. HsuLi-Kong WangToshiaki K. KirihataGregory J. Fredeman
    • Louis L. HsuLi-Kong WangToshiaki K. KirihataGregory J. Fredeman
    • G06F1200
    • G11C29/846G06F12/0893
    • An integrated redundancy eDRAM architecture system for an embedded DRAM macro system having a wide data bandwidth and wide internal bus width is disclosed which provides column and row redundancy for defective columns and rows of the eDRAM macro system. Internally generated column and row addresses of defective columns and rows of each micro-cell block are stored in a memory device, such as a fuse bank, during an eDRAM macro test mode in order for the information to be quickly retrieved during each cycle of eDRAM operation to provide an SRAM-like operation. A column steering circuit steers column redundant elements to replace defective column elements. Redundancy information is either supplied from a SRAM fuse data storage device or from a TAG memory device depending on whether a read or write operation, respectively, is being performed. The integrated redundancy eDRAM architecture system enables data to be sent and received to and from the eDRAM macro system without adding any extra delay to the data flow, thereby protecting data flow pattern integrity.
    • 公开了一种用于具有宽数据带宽和宽内部总线宽度的嵌入式DRAM宏系统的集成冗余eDRAM架构系统,其为eDRAM宏系统的有缺陷的列和行提供列和行冗余。 在eDRAM宏测试模式期间,每个微小区块的有缺陷的列和行的内部生成的列和行地址存储在诸如保险丝库的存储器件中,以便在eDRAM的每个周期期间快速检索信息 操作提供类似SRAM的操作。 列转向电路引导列冗余元件来替换有缺陷的列元素。 根据是否正在执行读取或写入操作,冗余信息是从SRAM熔丝数据存储设备提供的,或者从TAG存储设备提供的。 集成冗余eDRAM架构系统使数据能够从eDRAM宏系统发送和接收数据,而不会对数据流增加任何额外的延迟,从而保护数据流模式的完整性。
    • 4. 发明授权
    • Method and configuration to allow a lower wordline boosted voltage operation while increasing a sensing signal with access transistor threshold voltage
    • 方法和配置允许在增加具有存取晶体管阈值电压的感测信号的同时降低字线升压电压操作
    • US06751152B2
    • 2004-06-15
    • US09999379
    • 2001-10-31
    • Louis L. HsuToshiaki K. KirihataDaniel W. Storaska
    • Louis L. HsuToshiaki K. KirihataDaniel W. Storaska
    • G11C800
    • G11C11/4085G11C7/065G11C11/4091
    • A memory array architecture employs a full Vdd bitline precharged voltage and a low wordline boost voltage, which is less than Vdd plus the threshold voltage of the access transistor. In a write mode, a first low level of a data bit is almost fully written to a storage element, however a second high level of the data bit is not fully written to the storage element. In a read mode, the first low level of the data bit is fully read out from the storage element, however the second high level of the data bit is not read out by utilizing the access transistor threshold voltage. This allows a sensing signal only with the first voltage level transfer to the Vdd precharged BL. A reference WL is preferably used for generating a reference bitline voltage for a differential Vdd sensing scheme. Alternatively, a single BL digital sensing scheme may be used. Lowering the wordline voltage results in a reduction in power consumption by saving power on Vpp generator and support circuits, and a reduction in the size of the Vpp generator and support circuits, and also eliminates high Vpp voltage related problems such as dielectric breakdown and other reliability concerns while avoiding a complex decoding scheme and saving cost.
    • 存储器阵列架构采用全Vdd位线预充电电压和低字线升压电压,其小于Vdd加上存取晶体管的阈值电压。 在写入模式中,数据位的第一低电平几乎完全写入存储元件,然而数据位的第二高电平未完全写入存储元件。 在读取模式下,数据位的第一低电平从存储元件完全读出,然而数据位的第二高电平不通过利用存取晶体管阈值电压被读出。 这允许感测信号仅在第一电压电平传输到Vdd预充电BL。 参考WL优选地用于产生用于差分Vdd感测方案的参考位线电压。 或者,可以使用单个BL数字感测方案。 降低字线电压通过节省Vpp发生器和支持电路上的功率以及减小Vpp发生器和支持电路的尺寸而降低功耗,并且消除了与Vpp电压相关的高电压问题,例如介质击穿和其他可靠性 同时避免复杂的解码方案并节省成本。
    • 5. 发明授权
    • Floating wordline using a dynamic row decoder and bitline VDD precharge
    • 浮动字线使用动态行解码器和位线VDD预充电
    • US06426914B1
    • 2002-07-30
    • US09839105
    • 2001-04-20
    • Robert H. DennardLouis L. HsuToshiaki K. Kirihata
    • Robert H. DennardLouis L. HsuToshiaki K. Kirihata
    • G11C800
    • G11C8/08G11C7/22G11C8/10G11C11/4076G11C11/4085G11C11/4087
    • A short cycle DRAM use a floating wordline, dynamic row decoder and bitline VDD precharge, which improves the array efficiency of the short cycle DRAM (3-6 ns) without compromising its performance. A small size wordline driver circuit is provided to reduce the row size of the short cycle DRAM without compromising row access timing. A dynamic decoding operation is implemented which intentionally allows some of the deselected wordlines to float during row access. A Vdd bitline precharge/sensing technique avoids a detrimental (or positive) coupling effect to the floating wordlines during row accessing. A Vdd data-line (or DQ) precharge for a read operation, and control of incoming data timing avoids a detrimental (or positive) coupling effect for a write operation.
    • 短周期DRAM使用浮动字线,动态行解码器和位线VDD预充电,这提高了短周期DRAM(3-6ns)的阵列效率,而不损害其性能。 提供了一种小尺寸字线驱动器电路,以减少短周期DRAM的行大小,而不会影响行访问时序。 实现动态解码操作,其有意地允许一些未选择的字线在行访问期间浮动。 Vdd位线预充电/感测技术在行访问期间避免了对浮动字线的有害(或正)耦合效应。 用于读取操作的Vdd数据线(或DQ)预充电以及输入数据时序的控制避免了写入操作的有害(或正)耦合效应。