Skewed reference to improve ones and zeros in EPROM arrays
    1.
    发明授权
    Skewed reference to improve ones and zeros in EPROM arrays 失效
    倾斜的参考,以提高EPROM阵列中的零和零

    公开(公告)号:US5287315A

    公开(公告)日:1994-02-15

    申请号:US057435

    申请日:1993-05-07

    CPC分类号: G11C29/78 G11C16/28

    摘要: A structure and method for improving the sense margin of nonvolatile memories is disclosed. An improvement to the sense margin of nonvolatile memories is accomplished by improving the margin both for "ones" at low control gate voltage Vcc and for "zeros" at high control gate voltage Vcc. Improvement in sensing at low control gate voltages Vcc is accomplished by skewing the sense amplifier response characteristics by forming the channel length of the reference memory cell to have a longer channel length than the memory cells of the array.

    摘要翻译: 公开了一种用于改善非易失性存储器的检测边缘的结构和方法。 通过改善在低控制栅极电压Vcc下的“一个”和在高控制栅极电压Vcc下的“零”的裕度来实现对非易失性存储器的感测边缘的改进。 在低控制栅极电压Vcc下的感测改善通过使参考存储器单元的沟道长度形成具有比阵列的存储单元更长的沟道长度的方式来使读出放大器响应特性偏斜来实现。