公开(公告)号：US20220407459A1

公开(公告)日：2022-12-22

申请号：US17845378

申请日：2022-06-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jaehong JUNG ,  Seunghyun OH ,  Jinhyeon LEE ,  Gihyeok HA ,  Seungjin KIM ,  Joomyoung KIM ,  Yelim YOUN ,  Jaehoon LEE

IPC: H03B5/32 ,  H03B5/20 ,  H03B5/04 ,  G06F1/06

Abstract: A clock integrated circuit is provided. The clock integrated circuit includes: a first clock generator which includes a crystal oscillator configured to generate a first clock signal; and a second clock generator which includes a resistance-capacitance (RC) oscillator and a first frequency divider, and is configured to: generate a second clock signal using the first frequency divider based on a clock signal output from the RC oscillator; perform a first calibration operation for adjusting a frequency division ratio of the first frequency divider to a first frequency division ratio based on the first clock signal; and perform a second calibration operation for adjusting the first frequency division ratio to a second frequency division ratio based on a sensed temperature.