CIRCUIT AND METHOD FOR GENERATING MRS CODE AND IN SEMICONDUCTOR MEMORY DEVICE

摘要

PURPOSE: A circuit and a method for generating a MRS(Mode Register Set) code in a semiconductor memory device are provided to generate the MRS code without being restricted by a confined address. CONSTITUTION: A data input circuit(110) receives data, and outputs the inputted data in response to the first synchronous signal. A logic circuit(120) generates the second synchronous signal to latch an output signal of the data input circuit in response to the first synchronous signal. A latch circuit(130) receives the output signal of the data input circuit and latches the output signal of the data input circuit in response to the second synchronous signal. And a decoder(140) receives an output signal of the latch circuit generates a MRS code by decoding the output signal of the latch circuit. The first synchronous signal is generated in response to a signal enabling a MRS mode of the semiconductor memory device.