我现在使用TMP275的OneShot模式，
想知道在一次温度转换完成后是Configu Register的OS位会自动清零么，还是需要手动写0
您好，应该是自动清零的。 手册中有描述： 当TMP275 进入shutdown模式，OS位写1 开始温度转换，当一次温度转换完成之后，TMP275 仍会进入shutdown状态。 这样在不需要连续转换的条件下有利于减少功耗。 当读这个寄存器的时候，OSbit 总是0.
The TMP275 features a One-Shot Temperature Measurement Mode. When the device is in Shutdown Mode,
writing a ‘1’ to the OS bit starts a single temperature conversion. The device returns to the shutdown state at the
completion of the single conversion. This mode is useful for reducing power consumption in the TMP275 when
continuous temperature monitoring is not required. When the configuration register is read, the OS always reads
zero.
