CIRCUIT AND METHOD FOR READING DATA IN SEMICONDUCTOR MEMORY

摘要

PROBLEM TO BE SOLVED: To provide a circuit and a method for reading data, equipped with a bias current supply part for the purpose of compensating for a current flowing in a unit cell.

SOLUTION: This circuit is provided with a selection part for selecting a unit cell according to an address signal, a clamping part for supplying the clamping voltage of a fixed level to the bit line of the unit cell according to a clamping control signal, a precharging part for precharging a sensing node by the voltage of a fixed level according to the applied control signal of a first state in a precharging mode and compensating for the current reduction of the bit line connected to the selected unit cell according to the applied control signal of a second state in a data sensing operation mode through a sensing node, and a sense amplifier part for comparing the level of the sensing node with a reference level and sensing data held in the selected unit cell when the control signal of the second state is applied to the precharging part.

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