TEMPERATURE SENSED OSCILLATOR AND A SEMICONDUCTOR MEMORY DEVICE HAVING THE SAME, HAVING A LINEARITY ACCORDING TO TEMPERATURE

摘要

PURPOSE: A temperature sensed oscillator and a semiconductor memory device having the same are provided to reduce power consumption in an update processing by receiving an oscillation signal suitable for maintaining the retention of data according to temperature.;CONSTITUTION: A reference voltage generator(110) generate a reference voltage which is linearly varied according to a temperature which is changed by an external voltage. An amplifier circuit(120) generates an internal voltage by amplifying the reference voltage. A generator generates a variable oscillation signal having a period which is linearly varied according a temperature based on an internal voltage. The reference voltage generator generates a bias voltage having a constant voltage regardless of the external voltage. The reference voltage generator generates a reference voltage based on the bias voltage.;COPYRIGHT KIPO 2010