| 摘要 |
System for using a dynamic reference cell in a double-bit cell memory. A method is provided for reading and verifying a double bit core cell in a memory device. The memory device includes a dynamic reference cell and a fixed reference cell. The method comprises the steps of programming the dynamic reference cell using the fixed reference cell, and programming the double bit core cell using the dynamic reference cell. When the dynamic reference cell is located along with the core cell on the same word line, a constant current source added to a core cell data line operates during program verify to provide a current difference between the core cell and the dynamic reference cell.
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