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Periodic signal generating circuit dependent upon temperature for establishing a temperature independent refresh frequency
Periodic signal generating circuit dependent upon temperature for establishing a temperature independent refresh frequency
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机译:取决于温度的周期性信号产生电路,用于建立与温度无关的刷新频率
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摘要
A periodic signal generating circuit which is dependent upon temperature for establishing a temperature independent refresh frequency is presented. The periodic signal generating circuit includes a reference voltage generating unit and a periodic signal generating unit. The reference voltage generating unit produces a reference voltage which exhibits a variable voltage level in response to temperature. The periodic signal generating unit produces a periodic signal in response to a set voltage to determine the reference voltage and an oscillation period, wherein a transition timing of the set voltage is controlled by the reference voltage. As a result the periodic signal has a relatively constant period which can be produced regardless of the temperature variation.
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