Using the Integrated Temperature Sensor

        To use the on-chip temperature sensor, select the analog input channel INCHx = 1010. Any other
        configuration is done as if an external channel was selected, including reference selection,
        conversion-memory selection, etc.

        The typical temperature sensor transfer function is shown in Figure 22-13. When using the temperature
        sensor, the sample period must be greater than 30 µs. The temperature sensor offset error is large.
        Deriving absolute temperature values in the application requires calibration. See the device-specific data
        sheet for the parameters.

        Selecting the temperature sensor automatically turns on the on-chip reference generator as a voltage
        source for the temperature sensor. However, it does not enable the VREF+  output or affect the reference
        selections for the conversion. The reference choices for converting the temperature sensor are the same
        as with any other channel.

有的，你看下官方例程。在AD那部分。具体哪个文件你翻一下。。。

对，不过430本身发热很小，如果要求不高，可以近似认为是环境温度；
最好使用18b20等传感器，或者成本低的可以使用热敏电阻。

你可以把芯片靠近热源就行了  但不要温度太高  否则芯片工作也不稳定   要是做温度的应用的话 还是买个传感器吧  温度传感器型号多了去了