OSC frequency automatic calibration circuit and automatic calibration method
An automatic calibration and frequency technology, applied to the automatic control of power, electrical components, etc., to achieve the effect of reducing the number of tests, simple detection principle, and accelerated calibration speed
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[0044] Such as figure 2 Shown is the structure diagram of the OSC frequency automatic calibration circuit of the embodiment of the present invention; the OSC frequency automatic calibration circuit of the embodiment of the present invention includes: a parameter generator 1, an OSC circuit 2, a frequency error detection circuit 3, a calibration end judgment circuit 4, and a parameter adding Minus control circuit 5.
[0045] The output terminal of the parameter generator 1 outputs the control parameter PARAM to the OSC circuit 2 .
[0046] The output end of the OSC circuit 2 outputs a clock signal OSCOUT to the frequency error detection circuit 3, the frequency of the clock signal OSCOUT is regulated by the control parameter PARAM, the larger the control parameter PARAM, the greater the clock signal The higher the frequency of OSCOUT is, the smaller the control parameter PARAM is, and the smaller the frequency of the clock signal OSCOUT is.
[0047] The input terminal of the...
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