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    • 12. 发明授权
    • Semiconductor memory having hierarchical bit line architecture with
interleaved master bitlines
    • 半导体存储器具有分层位线架构和交错主位线
    • US5917744A
    • 1999-06-29
    • US993537
    • 1997-12-18
    • Toshiaki KirihataGerhard Mueller
    • Toshiaki KirihataGerhard Mueller
    • G11C11/401G11C7/18G11C11/4097H01L21/8242H01L27/108G11C5/06
    • G11C11/4097G11C7/18
    • Disclosed is a semiconductor memory employing a hierarchical bitline architecture which allows for a widened master bitline pitch as well as low bitline capacitance. In an exemplary embodiment, the memory (30) includes a plurality of memory cells (MC) arranged in rows and columns for storing data. Each column has at least one sense amplifier (SA.sub.i), at least one pair of master bitlines (MBL.sub.i, MBL.sub.i ) operatively coupled to the sense amplifier, and at least two pairs of local bitlines (LBL.sub.1i, LBL.sub.1i , LBL.sub.2i, LBL.sub.2i ), coupled to memory cells and selectively coupled to the sense amplifier. At least one of the local bitline pairs is selectively coupled to the sense amplifier via the master bitline pair. Each master bitline pair has a length shorter than a column length, and the master bitlines are arranged in an interleaved configuration. The pitch of at least a portion of at least some of the master bitlines is greater than the local bitline pitch. The master bitlines may be arranged in either folded or open configurations. The master bitline pitch may be about twice the local bitline pitch.
    • 公开了采用分级位线架构的半导体存储器,其允许加宽的主位线间距以及低位线电容。 在示例性实施例中,存储器(30)包括以行和列排列以存储数据的多个存储单元(MC)。 每列具有至少一个读出放大器(SAi),可操作地耦合到读出放大器的至少一对主位线(MBLi,+ E,ovs MBLi + EE)和至少两对本地位线(LBL1i,+ E ,ovs LBL1i + EE,LBL2i,+ E,ovs LBL2i + EE),耦合到存储器单元并选择性地耦合到读出放大器。 本地位线对中的至少一个经由主位线对选择性地耦合到读出放大器。 每个主位线对具有比列长度短的长度,并且主位线被布置成交错配置。 至少一些主位线的至少一部分的间距大于局部位线间距。 主位线可以以折叠或开放的配置布置。 主位线间距可以是本地位线间距的两倍。
    • 14. 发明授权
    • Data path calibration and testing mode using a data bus for semiconductor memories
    • 使用半导体存储器的数据总线的数据路径校准和测试模式
    • US06799290B1
    • 2004-09-28
    • US09512756
    • 2000-02-25
    • Toshiaki KirihataGerhard MuellerDavid Russell Hanson
    • Toshiaki KirihataGerhard MuellerDavid Russell Hanson
    • G11C2900
    • G11C29/02
    • A method for testing a data path for a semiconductor memory device, in accordance with the present invention, includes providing a semiconductor memory device including a plurality of stages in a data path, and transferring data into the data path. Components are disabled to isolate at least one stage of the plurality of stages such that data written to or read from the at least one stage is available at an output. The data at the output is preferably compared to expected data. Alternately, system level calibration between devices may be performed to ensure proper communication between devices without destroying data in a memory array and making a dynamic data skew calibration possibly while running an application.
    • 根据本发明的用于测试半导体存储器件的数据路径的方法包括提供包括数据路径中的多个级并将数据传送到数据路径的半导体存储器件。 组件被禁用以隔离多个级中的至少一个级,使得写入或从至少一个级读取的数据在输出端可用。 优选地将输出端的数据与预期数据进行比较。 或者,可以执行设备之间的系统级校准,以确保设备之间的正确通信,而不会破坏存储器阵列中的数据并且在运行应用时可能进行动态数据偏移校准。
    • 19. 发明授权
    • SDRAM with a maskable input
    • SDRAM具有可屏蔽输入
    • US06240043B1
    • 2001-05-29
    • US09456588
    • 1999-12-08
    • David R. HansonToshiaki KirihataGerhard Mueller
    • David R. HansonToshiaki KirihataGerhard Mueller
    • G11C800
    • G11C7/1006G11C7/1021
    • A random access memory (RAM) included in an integrated circuit and particularly a synchronous dynamic RAM (SDRAM) having a maskable data input. The SDRAM includes an xy data input register receiving a burst x bits long and y bits wide corresponding to the number of data lines (DQs). An xy mask register receives a corresponding mask bit for each received data bit, each mask bit indicating whether the corresponding data bit is stored in the SDRAM array. An enable buffer receives data outputs from the xy data input register and passes the individual data outputs to the array depending on corresponding mask states stored in the xy mask register. The mask register is preferably set to a masked state. Un masking occurs when an enable signal is asserted on a bit by bit basis. This allows the remaining bits within the burst length to be in a masked state when a write burst interrupt command is asserted. During an input prefetch, an interrupt may occur causing any received portion of the burst or prefetch to be stored in the array without disturbing memory locations corresponding to the balance or remaining bits of the prefetch.
    • 包括在集成电路中的随机存取存储器(RAM),特别是具有可屏蔽数据输入的同步动态RAM(SDRAM)。 SDRAM包括一个xy数据输入寄存器,它接收与数据线(DQ)数量相对应的突发x位长和y位宽。 xy屏蔽寄存器接收每个接收数据位的相应掩码位,每个掩码位指示对应的数据位是否存储在SDRAM阵列中。 使能缓冲器从xy数据输入寄存器接收数据输出,并根据存储在xy掩码寄存器中的相应屏蔽状态将各个数据输出传递给阵列。 掩模寄存器优选设置为掩蔽状态。 当使能信号被逐位置信时,会发生解掩码。 当允许写突发中断命令被断言时,允许脉冲串长度内的其余位处于屏蔽状态。 在输入预取期间,可能会发生中断,导致突发或预取的任何接收的部分被存储在阵列中,而不会干扰对应于预取的余额或剩余比特的存储器位置。
    • 20. 发明授权
    • Dynamic-latch-receiver with self-reset pointer
    • 具有自复位指针的动态锁存器
    • US6140855A
    • 2000-10-31
    • US281461
    • 1999-03-30
    • Toshiaki KirihataGerhard MuellerDavid R. Hanson
    • Toshiaki KirihataGerhard MuellerDavid R. Hanson
    • H03K19/0175G06F13/28G11C7/10G11C11/407H04L25/02H04L25/03H03K3/356
    • G11C7/1087G11C7/1078
    • A dynamic latch receiver device comprises a sequence of data latch devices arranged in parallel for enabling sequential latching of data signals communicated serially on a single data line. The device includes a first pointer signal generator for generating a sequence of one or more first pointer signals, each generated first pointer signal of a sequence corresponding to a specific latch device and overlapping in time with a prior generated first pointer signal of the sequence; and, a pulse converter device associated with a latch device for receiving a corresponding first pointer signal and generating a respective second pointer signal for input to a respective latch device, each second pointer signal generated in a non-overlapping sequence for triggering a respective latching of each data signal in synchronism with serially communicated data signals.
    • 动态锁存接收器装置包括并行排列的一系列数据锁存装置,用于使能顺序锁存在单个数据线上串行通信的数据信号。 该装置包括用于产生一个或多个第一指针信号的序列的第一指针信号发生器,每个产生与特定锁存装置相对应的序列的第一指针信号,并且与该序列的先前生成的第一指针信号在时间上重叠; 以及与锁存装置相关联的脉冲转换器装置,用于接收对应的第一指针信号并产生相应的第二指针信号以输入到相应的锁存装置,每个第二指针信号以不重叠的顺序产生,用于触发相应的锁存 每个数据信号与串行数据信号同步。