Title:
CIRCUIT ARRANGEMENT AND OSCILLATOR
Document Type and Number:
Japanese Patent JP2022057163
Kind Code:
A
Abstract:
To provide a circuit arrangement that can efficiently use a memory storing a look-up table.SOLUTION: A circuit arrangement 100 includes: an oscillation circuit 160 that generates an oscillation signal by using an oscillator 10; a frequency adjustment circuit 150 that adjusts the oscillatory frequency of the oscillation circuit 160 based on frequency adjustment data CLa, CLb; a temperature sensor circuit 110 that outputs temperature data TD; an arithmetic circuit 120; and a storage circuit 130. The arithmetic circuit 120 performs conversion processing of converting the temperature data TD into conversion temperature data ETD. The storage unit 130 stores a look-up table 131 representing the correspondence between the conversion temperature data ETD and the frequency adjustment data CLa, CLb. The arithmetic circuit 120 performs, as the conversion processing, offset addition processing of setting the conversion temperature data ETD within an address range of the look-up table 131.SELECTED DRAWING: Figure 3
Inventors:
HANEDA HIDEO
CHOKAI YUICHI
HIGUCHI TEPPEI
CHOKAI YUICHI
HIGUCHI TEPPEI
Application Number:
JP2020165275A
Publication Date:
April 11, 2022
Filing Date:
September 30, 2020
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
H03B5/32
Attorney, Agent or Firm:
Satoshi Nakai
Hiroki Matsuoka
Masayuki Imamura
Hiroki Matsuoka
Masayuki Imamura