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    • 3. 发明申请
    • Electric fuse determination circuit and determination method
    • 电熔丝确定电路及测定方法
    • US20090115493A1
    • 2009-05-07
    • US12289588
    • 2008-10-30
    • Hiroshi Akamatsu
    • Hiroshi Akamatsu
    • H01H37/76
    • G11C17/18
    • An electrical fuse determination circuit that can speedily and reliably incorporate an electrical fuse data and improve a reliability of electrical fuse device, includes a first electrical fuse device of which one end connects with a higher voltage, a second electrical fuse device of which one end connects with a lower voltage, a set portion that puts one of the first electrical fuse device and the second electrical fuse device in a conductive state, and a determination portion that determines a voltage level of a predetermined contact point connecting the other end of the first electrical fuse device and the other end of the second electrical fuse device.
    • 一种可快速可靠地并入电熔丝数据并提高电熔丝装置的可靠性的电熔丝确定电路,包括一端与较高电压连接的第一电熔丝装置,一端连接的第二电熔丝装置 具有较低的电压,将第一电熔丝装置和第二电熔丝装置中的一个置于导通状态的设定部分,以及确定部分,其确定连接第一电熔丝装置和第二电熔丝装置的另一端的预定接触点的电压电平 保险丝装置和第二电熔丝装置的另一端。
    • 9. 发明申请
    • Anti-fuse circuit and semiconductor memory device
    • 防熔丝电路和半导体存储器件
    • US20100195416A1
    • 2010-08-05
    • US12656486
    • 2010-02-01
    • Hiroshi Akamatsu
    • Hiroshi Akamatsu
    • G11C7/00H03K19/0175G11C17/16
    • G11C11/4074G11C7/1072G11C7/22G11C7/222G11C11/4076G11C17/16G11C29/785G11C2229/763
    • An anti-fuse circuit uses first to fifth power supplies which have first to fifth power supply voltages, respectively, in the order of highest to lowest during writing. The anti-fuse circuit includes: a first level shift circuit which is connected to the second to fourth power supplies and which converts a first logic signal that changes between the third and fourth power supply voltages into a second logic signal that changes between the second and fourth power supply voltages; a second level shift circuit which is connected to the first, second, and fourth power supplies and which converts the second logic signal into a third logic signal that changes between the first and fourth power supply voltages; a transistor having a source connected to the first power supply and a gate connected to the third logic signal; and an anti-fuse element having one end connected to the drain of the transistor and the other end connected to the fifth power supply.
    • 反熔丝电路使用在写入期间以从最高到最低的顺序分别具有第一至第五电源电压的第一至第五电源。 反熔丝电路包括:第一电平移位电路,其连接到第二至第四电源,并将在第三和第四电源电压之间变化的第一逻辑信号转换成在第二和第四电源电压之间变化的第二逻辑信号, 第四电源电压; 第二电平移位电路,其连接到第一,第二和第四电源,并将第二逻辑信号转换成在第一和第四电源电压之间变化的第三逻辑信号; 具有连接到第一电源的源极和连接到第三逻辑信号的栅极的晶体管; 以及一个反熔丝元件,其一端连接到晶体管的漏极,另一端连接到第五电源。