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    • 1. 发明授权
    • Dynamic random-access memory having a hierarchical data path
    • 具有分层数据路径的动态随机存取存储器
    • US5999480A
    • 1999-12-07
    • US167259
    • 1998-10-06
    • Adrian OngPaul S. ZagarTroy ManningBrent KeethKen Waller
    • Adrian OngPaul S. ZagarTroy ManningBrent KeethKen Waller
    • G11C5/02G11C7/10G11C11/4096G11C29/00G11C29/36G11C8/00
    • G11C29/785G11C11/4096G11C29/80G11C29/88G11C5/025G11C7/10G11C29/36
    • A semiconductor dynamic random-access memory (DRAM) device embodying numerous features that collectively and/or individually prove beneficial and advantageous with regard to such considerations as density, power consumption, speed, and redundancyis disclosed. The device is a 64 Mbit DRAM comprising eight substantially identical 8 Mbit partial array blocks (PABs), each pair of PABs comprising a 16 Mbit quadrant of the device. Between the top two quadrants and between the bottom two quadrants are column blocks containing I/O read/write circuitry, column redundancy fuses, and column decode circuitry. Column select lines originate from the column blocks and extend right and left across the width of each quadrant. Each PAB comprises eight substantially identical 1Mbit sub-array blocks (SABs). Associated with each SAB are a plurality of local row decoder circuits functioning to receive partially decoded row addresses from a column predecoder circuit and generating local row addresses supplied to the SAB with which they are associated. A hierarchical data path is provided wherein a plurality of multiplexers are distributed throughout each SAB, these multiplexers functioning to selectively couple sense amplifier output signals to local data I/O lines associated with each SAB. In one embodiment, the data path multiplexers are physically disposed within gaps defined by adjacent ones of the local row address decoders distributed throughout each SAB.
    • 一种体现许多特征的半导体动态随机存取存储器(DRAM)装置,其集合和/或单独证明在所公开的诸如密度,功耗,速度和冗余度之类的考虑方面是有益和有利的。 该器件是包括八个基本上相同的8兆位部分阵列块(PAB)的64Mbit DRAM,每对PAB包括该器件的16Mb象限。 顶部两个象限之间和底部两个象限之间是包含I / O读/写电路,列冗余保险丝和列解码电路的列块。 列选择线来自列块,并在每个象限的宽度上左右延伸。 每个PAB包括八个基本相同的1M位子阵列块(SAB)。 与每个SAB相关联的是多个本地行解码器电路,用于从列预解码器电路接收部分解码的行地址,并产生提供给与它们相关联的SAB的本地行地址。 提供了分层数据路径,其中多个复用器分布在每个SAB中,这些多路复用器用于选择性地将感测放大器输出信号耦合到与每个SAB相关联的本地数据I / O线。 在一个实施例中,数据路径多路复用器物理地布置在分布在每个SAB中的相邻的本地行地址解码器限定的间隙内。
    • 2. 发明授权
    • Dynamic random access memory having decoding circuitry for partial
memory blocks
    • 具有用于部分存储器块的解码电路的动态随机存取存储器
    • US5901105A
    • 1999-05-04
    • US869035
    • 1997-06-05
    • Adrian E OngPaul S. ZagarTroy ManningBrent KeethKen Waller
    • Adrian E OngPaul S. ZagarTroy ManningBrent KeethKen Waller
    • G11C5/02G11C7/10G11C11/4096G11C29/00G11C29/36G11C8/00
    • G11C29/785G11C11/4096G11C29/80G11C29/88G11C5/025G11C7/10G11C29/36
    • A semiconductor dynamic random-access memory (DRAM) device embodying numerous features that collectively and/or individually prove beneficial and advantageous with regard to such considerations as density, power consumption, speed, and redundancy is disclosed. The device is a 64 Mbit DRAM comprising eight substantially identical 8 Mbit partial array blocks (PABs), each pair of PABs comprising a 16 Mbit quadrant of the device. Between the top two quadrants and between the bottom two quadrants are column blocks containing I/O read/write circuitry, column redundancy fuses, and column decode circuitry. Column select lines originate from the column blocks and extend right and left across the width of each quadrant. Each PAB comprises eight substantially identical 1 Mbit sub-array blocks (SABs). Associated with each SAB are a plurality of local row decoder circuits functioning to receive partially decoded row addresses from a column predecoder circuit and generating local row addresses supplied to the SAB with which they are associated. Various pre- and/or post-packaging options are provided for enabling a large degree of versatility, redundancy, and economy of design. Programmable options of the disclosed device are programmable by means of both laser fuses and electrical fuses. In the RAS chain, circuitry is provided for simulating the RC time constant behavior of word lines and digit lines during memory accesses, such that memory access cycle time can be optimized. Test data compression circuitry optimizes the process of testing each cell in the array. On-chip topology circuitry simplifies the testing of the device.
    • 公开了一种体现许多特征的半导体动态随机存取存储器(DRAM)装置,它们集中和/或单独地证明了在诸如密度,功耗,速度和冗余度之类的考虑方面是有利和有利的。 该器件是包括八个基本上相同的8兆位部分阵列块(PAB)的64Mbit DRAM,每对PAB包括该器件的16Mb象限。 顶部两个象限之间和底部两个象限之间是包含I / O读/写电路,列冗余保险丝和列解码电路的列块。 列选择线来自列块,并在每个象限的宽度上左右延伸。 每个PAB包括八个基本上相同的1兆位子阵列块(SAB)。 与每个SAB相关联的是多个本地行解码器电路,用于从列预解码器电路接收部分解码的行地址,并产生提供给与它们相关联的SAB的本地行地址。 提供了各种前置和/或后封装选项,以实现大量多功能性,冗余性和设计经济性。 所公开的设备的可编程选项可通过激光熔丝和电熔丝两者来编程。 在RAS链中,提供电路用于在存储器访问期间模拟字线和数字线的RC时间常数行为,使得可以优化存储器访问周期时间。 测试数据压缩电路优化了测试阵列中每个单元的过程。 片上拓扑电路简化了器件的测试。
    • 7. 发明申请
    • Method and system for selecting redundant rows and columns of memory cells
    • 用于选择存储单元的冗余行和列的方法和系统
    • US20050047228A1
    • 2005-03-03
    • US10966746
    • 2004-10-15
    • Brent KeethTroy ManningChris MartinEbrahim Hargan
    • Brent KeethTroy ManningChris MartinEbrahim Hargan
    • G11C7/00G11C8/00G11C29/00
    • G11C29/848
    • A system and method for selecting redundant rows and columns of memory devices includes a column select steering circuit to couple column select signals from a column address decoder to an array of memory cells. The system and method also includes a fuse banks for programming respective addresses of up to two defective columns that are to be repaired. The programmed addresses are applied to a defective column decoder that determines which column select signal(s) should be shifted downwardly and which column select signal(s) should be shifted upwardly. The column select steering circuit responds to signals from the defective column decoder to shift the column select signals downwardly or upwardly. The column select signal for the lowest column is shifted downwardly to a redundant column, and the column select signal for the highest column is shifted upwardly to a redundant column.
    • 用于选择存储器件的冗余行和列的系统和方法包括:列选择转向电路,用于将列选择信号从列地址解码器耦合到存储器单元阵列。 该系统和方法还包括用于编程待修复的多达两个缺陷列的相应地址的熔丝组。 编程的地址被应用于有缺陷的列解码器,该解码器确定哪个列选择信号应该被向下移位,哪个列选择信号应向上移位。 列选择转向电路响应来自故障列解码器的信号,以向下或向上移动列选择信号。 最低列的列选择信号向下移动到冗余列,最高列的列选择信号向上移动到冗余列。
    • 10. 发明申请
    • APPARATUS AND METHOD FOR REPAIRING A SEMICONDUCTOR MEMORY
    • 用于修复半导体存储器的装置和方法
    • US20080037342A1
    • 2008-02-14
    • US11876477
    • 2007-10-22
    • Chris MartinTroy ManningBrent Keeth
    • Chris MartinTroy ManningBrent Keeth
    • G11C7/00G11C17/18
    • G11C17/165G11C29/4401G11C29/789G11C29/802G11C29/808G11C2029/4402
    • An apparatus and method for repairing a semiconductor memory device includes a first memory cell array, a first redundant cell array and a repair circuit configured to nonvolatilely store a first address designating at least one defective memory cell in the first memory cell array. A first volatile cache stores a first cached address corresponding to the first address designating the at least one defective memory cell. The repair circuit distributes the first address designating the at least one defective memory cell of the first memory cell array to the first volatile cache. Match circuitry substitutes at least one redundant memory cell from the first redundant cell array for the at least one defective memory cell in the first memory cell array when a first memory access corresponds to the first cached address.
    • 用于修复半导体存储器件的装置和方法包括:第一存储单元阵列,第一冗余单元阵列和修复电路,被配置为在第一存储单元阵列中非易失性地存储指定至少一个有缺陷的存储单元的第一地址。 第一易失性高速缓存存储对应于指定所述至少一个有缺陷的存储器单元的第一地址的第一高速缓存地址。 修复电路将指定第一存储单元阵列的至少一个缺陷存储单元的第一地址分配给第一易失性高速缓存。 当第一存储器访问对应于第一缓存地址时,匹配电路将来自第一冗余单元阵列的至少一个冗余存储单元替换为第一存储单元阵列中的至少一个有缺陷的存储单元。