CIRCUIT AND METHOD FOR OUTPUTTING TEMPERATURE DATA OF SEMICONDUCTOR MEMORY APPARATUS

摘要

A circuit and a method for outputting temperature data of a semiconductor memory device are provided to remove an output error actually and completely. A temperature sensing circuit(500) generates a temperature voltage corresponding to temperature variation. An analog-digital conversion part(300) converts the temperature voltage into a first temperature code. A temperature data correction part(400) outputs a second temperature code by correcting the error of the first temperature code using a correction code. The temperature sensing circuit comprises a temperature sensor(110), a voltage adjustment part(120) and a fuse set(130). The temperature sensor outputs the temperature voltage inversely proportional to internal temperature of the semiconductor memory device and a first reference voltage with constant level regardless of temperature variation. The voltage adjustment part outputs a second reference voltage to define upper limit and lower limit of the temperature voltage. The fuse code adjusts plural resistance values according to cutting state of a plurality of fuses.