https://community.nxp.com/t5/Other-NXP-Products/is-there-anyway-to-sync-multiple-PCA9635-devices/m-p/1716084#M19153 <P>Hi, is there anyway to sync multiple PCA9635 devices? We are going provide a common clock to those devices. But they have to set to use EXTCLK one by by through I2C bus. This is an asynchronous process. The SWRST on I2C bus also resets all devices to internal clock. Also, the datasheet doesn't talk about the internal clock such as accuracy, tolerance and drifting very much. We are wondering if there are some unpublished features that can sync&nbsp;PCA9635 devices together. Thanks for help. -WWQ</P> Mon, 04 Sep 2023 00:26:30 GMT WWQ 2023-09-04T00:26:30Z https://community.nxp.com/t5/Other-NXP-Products/is-there-anyway-to-sync-multiple-PCA9635-devices/m-p/1716084#M19153 <P>Hi, is there anyway to sync multiple PCA9635 devices? We are going provide a common clock to those devices. But they have to set to use EXTCLK one by by through I2C bus. This is an asynchronous process. The SWRST on I2C bus also resets all devices to internal clock. Also, the datasheet doesn't talk about the internal clock such as accuracy, tolerance and drifting very much. We are wondering if there are some unpublished features that can sync&nbsp;PCA9635 devices together. Thanks for help. -WWQ</P> Mon, 04 Sep 2023 00:26:30 GMT https://community.nxp.com/t5/Other-NXP-Products/is-there-anyway-to-sync-multiple-PCA9635-devices/m-p/1716084#M19153 WWQ 2023-09-04T00:26:30Z