Semiconductor integrated circuit for generating plurality of different
reference levels
    11.
    发明授权
    Semiconductor integrated circuit for generating plurality of different reference levels 失效
    用于产生多个不同参考电平的半导体集成电路

    公开(公告)号:US6072724A

    公开(公告)日:2000-06-06

    申请号:US902275

    申请日:1997-07-29

    申请人: Hirokazu Yamazaki

    发明人: Hirokazu Yamazaki

    摘要: Disclosed is an art making it possible that, in a reference cell circuit for outputting a plurality of different reference level signals, even if the number of transistors serving as reference cells and each having a floating gate increases, the time required for setting channel currents of the transistors will not increase. The floating gates of a plurality of transistors for generating different reference signal levels are connected in common so that the channel currents of all the transistors can be set simultaneously. The transistors have the channel lengths thereof, channel widths thereof, or both of them made different. The channel currents of the transistors are therefore mutually different. An error in all reference levels dependent on a manufacturing process is compensated for by adjusting an amount of charge to be injected into the floating gates.

    摘要翻译: 公开了一种技术,即使在用作输出多个不同的参考电平信号的参考单元电路中,即使用作参考单元的晶体管的数量并且每个具有浮动栅极的晶体管数量增加,也可能需要将沟道电流设置为 晶体管不会增加。 用于产生不同参考信号电平的多个晶体管的浮动栅极共同连接,使得可以同时设置所有晶体管的沟道电流。 晶体管的沟道长度,沟道宽度或两者都不相同。 因此,晶体管的沟道电流是相互不同的。 依赖于制造过程的所有参考等级的误差通过调整要注入到浮动栅极的电荷量得到补偿。

    Semiconductor memory having non-volatile semiconductor memory cell
    14.
    发明授权
    Semiconductor memory having non-volatile semiconductor memory cell 失效
    具有非易失性半导体存储单元的半导体存储器

    公开(公告)号:US5469381A

    公开(公告)日:1995-11-21

    申请号:US949236

    申请日:1992-11-16

    申请人: Hirokazu Yamazaki

    发明人: Hirokazu Yamazaki

    摘要: A semiconductor memory having a non-volatile semiconductor memory cell, wherein the depletion of electrons from the semiconductor memory cell takes place in conjunction with the depletion of electrons from a load transistor so that a voltage difference between each threshold voltage can be maintained at the same level, and a writing operation is performed in a configuration where the load transistor of the non-volatile semiconductor memory cell is equipped with, like the non-volatile semiconductor memory cell, a floating gate, so that an initially stored memory content of the semiconductor memory cell can be read out.

    摘要翻译: PCT No.PCT / JP92 / 00323 Sec。 371日期:1992年11月16日 102(e)日期1992年11月16日PCT 1991年3月18日PCT公布。 第WO92 / 16946号公报 日期:1992年1月10日。具有非易失性半导体存储单元的半导体存储器,其中来自半导体存储单元的电子的耗尽结合来自负载晶体管的电子的耗尽,使得每个阈值之间的电压差 可以将电压维持在相同的电平,并且在非易失性半导体存储单元的负载晶体管像非易失性半导体存储单元一样配置浮动栅极的配置中进行写入操作,使得 可以读出半导体存储单元的初始存储的存储器内容。