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    • 3. 发明授权
    • Dual-port subthreshold SRAM cell
    • 双端口亚阈值SRAM单元
    • US08498174B2
    • 2013-07-30
    • US13243690
    • 2011-09-23
    • Yi-Te ChiuMing-Hung ChangHao-I YangWei Hwang
    • Yi-Te ChiuMing-Hung ChangHao-I YangWei Hwang
    • G11C8/00
    • G11C11/412G11C19/287
    • An innovative dual-port subthreshold static random access memory (SRAM) cell for sub-threshold voltage operation is disclosed. During write mode, the dual-port subthreshold SRAM cell would cut off the positive feedback loop of the inverters and utilize the reverse short-channel effect to enhance write capability. The single-ended read/write port structure further reduces power consumption of the lengthy bit line. Therefore, the dual-port subthreshold SRAM cell is a suitable for long operation in a first-in first-out memory system. Although the lower voltage reduces the stability of the memory cell, the dual-port subthreshold SRAM cell of the present invention can still stably operate.
    • 公开了用于亚阈值电压操作的创新的双端口亚阈值静态随机存取存储器(SRAM)单元。 在写模式下,双端口亚阈值SRAM单元将切断反相器的正反馈环路,并利用反向短沟道效应提高写入能力。 单端读/写端口结构进一步降低了冗长位线的功耗。 因此,双端口亚阈值SRAM单元适合于先进先出存储器系统中的长操作。 虽然较低的电压降低了存储单元的稳定性,但是本发明的双端口亚阈值SRAM单元仍然可以稳定地工作。
    • 4. 发明申请
    • DUAL-PORT SUBTHRESHOLD SRAM CELL
    • 双端口SUBTHRESHOLD SRAM单元
    • US20120307548A1
    • 2012-12-06
    • US13243690
    • 2011-09-23
    • Yi-Te ChiuMing-Hung ChangHao-I YangWei Hwang
    • Yi-Te ChiuMing-Hung ChangHao-I YangWei Hwang
    • G11C11/412G11C11/419
    • G11C11/412G11C19/287
    • An innovative dual-port subthreshold static random access memory (SRAM) cell for sub-threshold voltage operation is disclosed. During write mode, the dual-port subthreshold SRAM cell would cut off the positive feedback loop of the inverters and utilize the reverse short-channel effect to enhance write capability. The single-ended read/write port structure further reduces power consumption of the lengthy bit line. Therefore, the dual-port subthreshold SRAM cell is a suitable for long operation in a first-in first-out memory system. Although the lower voltage reduces the stability of the memory cell, the dual-port subthreshold SRAM cell of the present invention can still stably operate.
    • 公开了用于亚阈值电压操作的创新的双端口亚阈值静态随机存取存储器(SRAM)单元。 在写模式下,双端口亚阈值SRAM单元将切断反相器的正反馈环路,并利用反向短沟道效应提高写入能力。 单端读/写端口结构进一步降低了冗长位线的功耗。 因此,双端口亚阈值SRAM单元适合于先进先出存储器系统中的长操作。 虽然较低的电压降低了存储单元的稳定性,但是本发明的双端口亚阈值SRAM单元仍然可以稳定地工作。
    • 5. 发明授权
    • Gate oxide breakdown-withstanding power switch structure
    • 栅极氧化物击穿电源开关结构
    • US08385149B2
    • 2013-02-26
    • US13075682
    • 2011-03-30
    • Hao-I YangChing-Te ChuangWei Hwang
    • Hao-I YangChing-Te ChuangWei Hwang
    • G11C5/14
    • G11C11/417
    • The present invention proposes a gate oxide breakdown-withstanding power switch structure, which is connected with an SRAM and comprises a first CMOS switch and a second CMOS switch respectively having different gate-oxide thicknesses or different threshold voltages. The CMOS switch, which has a normal gate-oxide thickness or a normal threshold voltage, provides current for the SRAM to wake up the SRAM from a standby or sleep mode to an active mode. The CMOS switch, which has a thicker gate-oxide thickness or a higher threshold voltage, provides current for the SRAM to work in an active mode. The present invention prevents a power switch from gate-oxide breakdown lest noise margin, stabilization and performance of SRAM be affected.
    • 本发明提出一种栅极氧化物击穿电源开关结构,其与SRAM连接,并且包括分别具有不同栅极氧化物厚度或不同阈值电压的第一CMOS开关和第二CMOS开关。 具有正常栅极氧化物厚度或正常阈值电压的CMOS开关为SRAM提供电流,以将SRAM从待机或睡眠模式唤醒至活动模式。 具有更厚栅极氧化物厚度或更高阈值电压的CMOS开关为SRAM提供工作在主动模式的电流。 本发明防止电源开关从栅极氧化层击穿,以免噪声容限,SRAM的稳定性和性能受到影响。
    • 10. 发明授权
    • Disturb-free static random access memory cell
    • 无噪音静态随机存取存储单元
    • US08259510B2
    • 2012-09-04
    • US12772238
    • 2010-05-03
    • Ching-Te ChuangHao-I YangJihi-Yu LinShyh-Chyi YangMing-Hsien TuWei HwangShyh-Jye JouKun-Ti LeeHung-Yu Li
    • Ching-Te ChuangHao-I YangJihi-Yu LinShyh-Chyi YangMing-Hsien TuWei HwangShyh-Jye JouKun-Ti LeeHung-Yu Li
    • G11C7/00
    • G11C11/412
    • A disturb-free static random access memory cell includes: a latch circuit having a first access terminal and a second access terminal; a first switching circuit having a first bit transferring terminal coupled to the first access terminal, a first control terminal coupled to a first write word line, and a second bit transferring terminal; a second switching circuit having a third bit transferring terminal coupled to the second access terminal, a second control terminal coupled to a second write word line, and a fourth bit transferring terminal coupled to the second bit transferring terminal; a third switching circuit having a fifth bit transferring terminal coupled to the fourth bit transferring terminal, a third control terminal coupled to a word line, and a sixth bit transferring terminal coupled to a bit line; and a sensing amplifier coupled to the bit line, for determining a bit value appearing at the bit line.
    • 无干扰的静态随机存取存储单元包括:具有第一接入终端和第二接入终端的锁存电路; 第一切换电路,具有耦合到第一接入终端的第一比特传送终端,耦合到第一写字线的第一控制终端和第二比特传送终端; 第二切换电路,具有耦合到第二接入终端的第三比特传送终端,耦合到第二写字线的第二控制终端,以及耦合到第二比特传送终端的第四比特传送终端。 第三开关电路,具有耦合到第四位转移终端的第五位转移终端,耦合到字线的第三控制端和耦合到位线的第六位转移端; 以及耦合到位线的感测放大器,用于确定出现在位线处的位值。