| 摘要 |
A circuit for generating a clock of a semiconductor memory apparatus is provided to generate a clock with a constant frequency regardless of temperature. A reference voltage generation unit(10) generates a reference voltage. A reference current generation unit(200) generates a reference current having a constant current regardless of temperature variation. An oscillator(300) generates a clock with a desired frequency by inputting the reference voltage and the reference current. The oscillator generates the clock by using charging and discharging time of a capacitor.
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