公开(公告)号：US20040174945A1

公开(公告)日：2004-09-09

申请号：US10758680

申请日：2004-01-15

Applicant: STMicroelectronics S.A.

Inventor： Sandrine Lendre ,  Franck Roche ,  Olivier Plourde

IPC: H03K025/00

CPC classification number: G06F1/04

Abstract: The present invention relates to an integrated circuit comprising a first clock circuit delivering a first clock signal, a second clock circuit delivering a second clock signal, a first counting circuit for delivering a time base signal using a clock signal and a counting value, and means for applying the first clock signal and a first counting value to the first counting circuit, so as to produce a first time base signal. According to the present invention, the integrated circuit comprises means for producing a second time base signal using the second clock signal and a second counting value, and means for calibrating the second counting value such that it is equal or proportional to the number of periods of the second clock signal occurring during a determined time interval equal to a period or to a whole number of periods of the first time base signal. Application particularly to the management of a timer in a microprocessor.

Abstract translation: 本发明涉及一种集成电路，其包括：传送第一时钟信号的第一时钟电路，传递第二时钟信号的第二时钟电路，用于使用时钟信号和计数值传送时基信号的第一计数电路;以及装置 用于将第一时钟信号和第一计数值应用于第一计数电路，以产生第一时基信号。 根据本发明，集成电路包括用于使用第二时钟信号和第二计数值产生第二时基信号的装置，以及用于校准第二计数值的装置，使得其等于或等于 所述第二时钟信号在等于所述第一时基信号的周期或整数个周期的确定时间间隔内发生。 尤其适用于微处理器中定时器的管理。