Clock generation circuits and methods of generating clock signals

A clock generation circuit comprising:

• a temperature compensation circuit configured to generate a temperature-compensated frequency selection code that varies depending on an operation temperature,
• wherein the temperature compensation circuit includes:
• a clock divider configured to generate a divided clock signal by dividing a frequency of a clock signal;
• a logic circuit configured to generate a correction code based on a difference between the operation temperature and a reference temperature;
• and
• an output circuit configured to generate the temperature-compensated frequency selection code by summing the correction code and a temperature-independent frequency selection code that is fixed regardless of the operation temperature,
• wherein the temperature compensation circuit is configured to generate the temperature-compensated frequency selection code according to a following equation,
• TCFSEL=(FSEL+LO)*WF*ΔT+LO
• where TCFSEL indicates the temperature-compensated frequency selection code, FSEL indicates the temperature-independent frequency selection code, WF indicates a weight factor, ΔT indicates the difference between the operation temperature and the reference temperature, and LO indicates a constant value.

A temperature compensation circuit comprising:

• a clock divider configured to generate a divided clock signal by dividing a frequency of a clock signal;
• a logic circuit configured to generate a correction code based on a difference between an operation temperature and a reference temperature;
• and
• an output circuit configured to generate a temperature-compensated frequency selection code by summing the correction code and a temperature-independent frequency selection code that is fixed regardless of the operation temperature,
• wherein the temperature compensation circuit is configured to generate the temperature-compensated frequency selection code according to a following equation,
• TCFSEL=(FSEL+LO)*WF*ΔT+LO
• where TCFSEL indicates the temperature-compensated frequency selection code, FSEL indicates the temperature-independent frequency selection code, WF indicates a weight factor, ΔT indicates the difference between the operation temperature and the reference temperature, and LO indicates a constant value.