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FR2012A的睡眠模式唤醒时间是多长，没有看到这方面的描述。 目前项目需要使用串口数据来唤醒，这个模块进入睡眠模式后会关闭所有外设，需要在唤醒后重新配置。实测用串口RX脚中断唤醒后，会丢失20到30个字节的数据，这个能优化吗，控制在几个字节内？