Invention Grant
US07826267B2 Method and apparatus for reading and programming a non-volatile memory cell in a virtual ground array 有权
用于读取和编程虚拟地阵列中的非易失性存储单元的方法和装置

Method and apparatus for reading and programming a non-volatile memory cell in a virtual ground array
Abstract:
A method and apparatus for dynamic programming and dynamic reading of a select non-volatile memory cell in a virtual grounds array is disclosed. In the dynamic read operation the global bit lines and the associated local bit lines are connected to a precharged voltage. One of the first or second global bit lines is connected to a low voltage such as ground, wherein the one global bit line connected to ground also connects to the local bit line for sensing the select non-volatile memory cell. The state of the select non-volatile memory cell is detected by detecting the sense amplifier connected to the global bit line, other than the one global bit line. In a dynamic programming operation, the first and second global bit lines and their associated local bit lines are precharged to a first voltage. One of the first or second global bit line and its associated local bit lines is connected to a second voltage.
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