LOCAL CLOCK SIGNAL GENERATING CIRCUIT AND METHOD, INTERNAL CLOCK SIGNAL GENERATING CIRCUIT AND METHOD, AND SEMICONDUCTOR MEMORY DEVICE USING THEM

摘要

PURPOSE: A local clock signal generating circuit and method, an internal clock signal generating circuit and method, and a semiconductor memory device using them are provided to generate a plurality of local signals without phase difference from internal clock signals and generate stable internal clock signals without relation to shift in noise. CONSTITUTION: A local clock signal generating circuit comprises an internal clock signal generating circuit(100) generating clock signals synchronized to outer clock signals, clock lines(130) transferring the internal clock signals, a local clock signal generating circuit(110), plural internal circuits(120-128) operated in response to corresponding local clock signals and plural phase mixers(110a-110i). The phase mixers receive and combine signals of two points on the clock line to generate the local clock signals.