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    • 7. 发明授权
    • Semiconductor memory device including a data transfer circuit for
transferring data between a DRAM and an SRAM
    • 半导体存储器件包括用于在DRAM和SRAM之间传送数据的数据传输电路
    • US5603009A
    • 1997-02-11
    • US356046
    • 1994-12-14
    • Yasuhiro KonishiKatsumi DosakaKouji HayanoMasaki KumanoyaAkira YamazakiHisashi Iwamoto
    • Yasuhiro KonishiKatsumi DosakaKouji HayanoMasaki KumanoyaAkira YamazakiHisashi Iwamoto
    • G06F12/08G11C7/10G11C11/00G06F13/00G11C11/34
    • G11C7/1006G06F12/0893G11C11/005G11C7/103G11C7/1045G11C2207/2254
    • A semiconductor memory device containing a cache includes a static random access memory (SRAM) as a cache memory, and a dynamic random access memory (DRAM) as a main memory. Collective transfer of data blocks is possible between the DRAM and the SRAM through a bi-directional data transfer gate circuit and through an internal data line. A DRAM row decoder and a DRAM column decoder are provided in the DRAM. A SRAM row decoder and an SRAM column decoder are provided in the SRAM. Addresses of the SRAM and DRAM can be independently applied. The data transfer gate includes a latch circuit for latching data from the SRAM, which serves as a high speed memory, an amplifier circuit and a gate circuit for amplifying data from the DRAM, which serves as a large capacity memory, and for transmitting the amplified data to the SRAM, and a gate circuit, responsive to a DRAM write enable signal for transmitting write data to corresponding memory cells of the DRAM. After the data of the SRAM has been latched by a latch circuit, write data is transmitted from the gate circuit to the DRAM, and the write data is transmitted to the SRAM through the amplifier circuit and the gate circuit.
    • 包含高速缓存的半导体存储器件包括作为高速缓冲存储器的静态随机存取存储器(SRAM)和作为主存储器的动态随机存取存储器(DRAM)。 通过双向数据传输门电路和内部数据线,可以在DRAM和SRAM之间进行数据块的集中传输。 在DRAM中提供DRAM行解码器和DRAM列解码器。 在SRAM中提供SRAM行解码器和SRAM列解码器。 SRAM和DRAM的地址可以独立应用。 数据传输门包括一个锁存电路,用于锁存来自用作高速存储器的SRAM的数据,放大器电路和用于放大来自DRAM的数据的门电路,其用作大容量存储器,并用于发送放大 数据到SRAM,以及门电路,响应于用于将写入数据发送到DRAM的相应存储器单元的DRAM写使能信号。 在SRAM的数据被锁存电路锁存之后,写入数据从门电路传输到DRAM,写数据通过放大电路和门电路传输到SRAM。
    • 8. 发明授权
    • Synchronous semiconductor memory including register for storing data input and output mode information
    • 同步半导体存储器包括用于存储数据输入和输出模式信息的寄存器
    • US06434661B1
    • 2002-08-13
    • US09640518
    • 2000-08-17
    • Yasuhiro KonishiKatsumi DosakaKouji HayanoMasaki KumanoyaAkira YamazakiHisashi Iwamoto
    • Yasuhiro KonishiKatsumi DosakaKouji HayanoMasaki KumanoyaAkira YamazakiHisashi Iwamoto
    • G06F1300
    • G11C7/1006G06F12/0893G11C7/103G11C7/1045G11C11/005G11C2207/2254
    • A semiconductor memory device is provided with a static random access memory (SRAM) serving as a cache memory and a dynamic random access memory (DRAM) serving as a main memory. A bi-directional data transfer circuit is arranged for transfer of data blocks between the SRAM and the DRAM. A command register is provided for holding command data to set operation modes such as a data output mode of the memory device. The data output mode may include a transparent mode, a latched mode and a registered mode selected depending on a data combination at data input terminals of the memory device. An output circuit for providing a selected data output mode includes an output latch circuit for latching data on read data buses in response to clock signals, and an output buffer for outputting data from the output latches to a data output terminal. The latch circuit provides data at a first clock cycle of a clock signal when the command data has a first value and provides data at a second clock cycle of the clock signal, which is later than the first clock cycle, when the command data has a second value.
    • 半导体存储器件具有用作高速缓冲存储器的静态随机存取存储器(SRAM)和用作主存储器的动态随机存取存储器(DRAM)。 双向数据传输电路被布置用于在SRAM和DRAM之间传送数据块。 提供了一个命令寄存器来保存命令数据以设置诸如存储器件的数据输出模式的操作模式。 数据输出模式可以包括根据存储器件的数据输入端子处的数据组合选择的透明模式,锁存模式和注册模式。 用于提供选择的数据输出模式的输出电路包括用于响应于时钟信号在读取数据总线上锁存数据的输出锁存电路,以及用于将数据从输出锁存器输出到数据输出端的输出缓冲器。 当命令数据具有第一值时,锁存电路以时钟信号的第一时钟周期提供数据,并且当命令数据具有第一时钟周期时,提供比第一时钟周期晚的时钟信号的第二时钟周期的数据 第二个值。