Patent ID: 11863185
Assignee: LX SEMICON CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A method for frequency correction of an oscillator circuit, the method comprising:
acquiring, by the oscillator circuit of a semiconductor integrated circuit device, a temperature sensing value for a temperature of the semiconductor integrated circuit device;
extracting, from an internal memory, a first error correction value for correcting a frequency error of a clock signal when a temperature of the semiconductor integrated circuit device is a first temperature and a second error correction value for correcting the frequency error of the clock signal when the temperature of the semiconductor integrated circuit device is a second temperature higher than the first temperature;
generating a third correction value corresponding to the temperature sensing value by using the first error correction value, the second error correction value, and the temperature sensing value, the third error correction value including a first control code for a coarse adjustment of a frequency of the clock signal and a second control code for a fine adjustment of the frequency of the clock signal; and
setting at least one of a bias, a resistance value, and a capacitor value according to the third error correction value in order to control a frequency of the clock signal; and
outputting the clock signal in which the frequency error is corrected according to the temperature of the semiconductor integrated circuit device.