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    • 13. 发明授权
    • Semiconductor memory having space-efficient layout
    • 半导体存储器具有节省空间的布局
    • US5831912A
    • 1998-11-03
    • US938074
    • 1997-09-26
    • Gerhard MuellerToshiaki Kirihata
    • Gerhard MuellerToshiaki Kirihata
    • G11C11/401G11C5/02G11C7/18G11C11/409G11C11/4097H01L21/8242H01L27/108G11C7/00G11C7/02
    • G11C5/025G11C11/4097G11C7/18
    • The present disclosure includes semiconductor memory with a space efficient layout. Dynamic Random Access Memory (DRAM) chips have a plurality of memory cells (18) arranged in rows and columns. A semiconductor memory includes a bank of sense amplifiers (14) disposed in a first generally rectangular region having a length parallel to said rows, with each sense amplifier (14) in the bank disposed in a sense amplifier region of an associated column (16). A plurality of amplifiers (124 or 126) are driven by at least one driver (140 or 142), each of the plurality of amplifiers disposed between a pair of complementary bit lines (120) and located within the sense amplifier region. The at least one driver shares at least one diffusion region extending transversely to the column direction with at least on other driver such that the number of contacts of the sense amplifier bank is reduced.
    • 本公开包括具有空间有效布局的半导体存储器。 动态随机存取存储器(DRAM)芯片具有以行和列排列的多个存储单元(18)。 半导体存储器包括设置在具有与所述行平行的长度的第一大致矩形区域中的读出放大器组,其中每个读出放大器(14)设置在相关联的列(16)的读出放大器区域中, 。 多个放大器(124或126)由至少一个驱动器(140或142)驱动,多个放大器中的每个放大器设置在一对互补位线(120)之间并位于读出放大器区域内。 至少一个驱动器至少与至少一个驱动器共享至少一个横向于列方向延伸的扩散区域,使得读出放大器组的触点数量减少。
    • 15. 发明授权
    • Hierarchical prefetch for semiconductor memories
    • 半导体存储器的分层预取
    • US6081479A
    • 2000-06-27
    • US333539
    • 1999-06-15
    • Brian JiToshiaki KirihataGerhard MuellerDavid Hanson
    • Brian JiToshiaki KirihataGerhard MuellerDavid Hanson
    • G11C7/10G11C8/00
    • G11C7/1039
    • A semiconductor memory in accordance with the present invention includes a data path including a plurality of hierarchical stages, each stage including a bit data rate which is different from the other stages. At least two prefetch circuits are disposed between the stages. The at least two prefetch circuits include at least two latches for receiving data bits and storing the data bits until a next stage in the hierarchy is capable of receiving the data bits. The at least two prefetch circuits are coupled between stages such that an overall data rate per stage between stages are substantially equal. Control signals control the at least two latches such that prefetch circuits maintain the overall data rate between the stages.
    • 根据本发明的半导体存储器包括包括多个分层级的数据路径,每个级包括与其他级不同的位数据速率。 至少两个预取电路设置在各级之间。 至少两个预取电路包括用于接收数据位并存储数据位的至少两个锁存器,直到层级中的下一级能够接收数据位。 所述至少两个预取电路耦合在级之间,使得级之间每级的总体数据速率基本相等。 控制信号控制至少两个锁存器,使得预取电路保持级之间的总体数据速率。
    • 20. 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。