| 摘要 |
A memory includes a memory array, a sense amplifier, and a reference circuit. The memory array includes a memory cell. The sense amplifier includes a first terminal coupled to the memory cell and a second terminal. The reference circuit includes a first reference cell, a second reference cell, and a switch. The first reference cell has a first reference threshold voltage for providing a first reference current, based on a first reference word line voltage. The second reference cell has a second reference threshold voltage for providing a second reference current, based on a second reference word line voltage. The switch selectively provides one of the first and the second reference currents to the second terminal in response to a control signal. The first and the second reference word line voltages correspond to different voltage levels.
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