| 摘要 |
A current-mode sensing structure used in a high-density multiple-port register in logic processing and a method for the same are proposed. First, a reference current is defined by a dummy word line of a dummy cell and output. A multiple-port register file cell is then used to send out a select signal of "0" or "1" and output a cell current according to the select signal and the reference current. Finally, the cell current and the reference current are sent to a current comparator amplifier, which senses and outputs a difference value between the cell current and the reference current to perform session at once (SAO) recording. Because the difference value has only two possibilities: the reference current or its negative, the sensing time of the current comparator amplifier can be shortened.
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