BQ25120 watchdog timer
时间:10-02
整理:3721RD
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请问,我公司现在用BQ25120遇到一些问题,发现数据手册里有一段这样的描述:
In addition to the safety timer, the device contains a 50-second watchdog timer that monitors the host through the I 2C interface. Once any I 2C transaction is performed on the I 2C interface, a watchdog timer is started. The watchdog timer is reset by any transaction by the host using the I 2C interface. If the watchdog timer expires without a reset from the I 2C interface, all registers except MRRESET_VIN and MRREC are reset to the default values
这个 watchdog timer 如何关闭,如果不关闭,当我IIC不操作时候,会不会每隔50S发生一次复位。
I2C长时间没有任何动作,系统认为MCU通信出问题了。这种情况,做MCU控制,肯定是要避免的。
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如何才能关闭呢