- 专利标题： METHOD FOR COMMUNICATING A REFERENCE TIME BASE IN A MICROCONTROLLER, AND CORRESPONDING MICROCONTROLLER INTEGRATED CIRCUIT
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申请号： US17807452申请日： 2022-06-17
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公开(公告)号： US20230006684A1公开(公告)日： 2023-01-05
- 发明人: Laurent Meunier , Vincent Pascal Onde
- 申请人： STMicroelectronics (Rousset) SAS , STMicroelectronics (Grand Ouest) SAS
- 申请人地址： FR Rousset; FR Le Mans
- 专利权人： STMicroelectronics (Rousset) SAS,STMicroelectronics (Grand Ouest) SAS
- 当前专利权人： STMicroelectronics (Rousset) SAS,STMicroelectronics (Grand Ouest) SAS
- 当前专利权人地址： FR Rousset; FR Le Mans
- 优先权： FR2107062 20210630
- 主分类号： H03L7/24
- IPC分类号： H03L7/24 ; H03L7/099 ; G06F1/08 ; G06F9/48
摘要：
In an embodiment a method includes generating a low-frequency clock signal having a first frequency, in a standby mode and in a run mode of the CPU, generating a high-frequency clock signal having a second frequency higher than the first frequency, in the run mode, updating a value of the reference time base at each period of the low-frequency clock signal in the standby mode, and accessing the counter register with the high-frequency clock signal in the run mode.
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