Part Number: TMP107
Tool/software:
The circuit schematic diagram is designed according to the recommended circuit principle in the specification.
1. After the board is powered on (220VAC), send the address initialization command to the temperature chip.
There are abnormal waveforms in the data returned by the chip.
Sometimes the chip will continue to output abnormal waveforms occupying the bus.
Need to ask the original factory, have you encountered this kind of problem, what is the cause
2. The board is powered on and sends the temperature reading command without initialization. No abnormal waveforms are displayed
3. The IO2 pin of the last TMP107 required by the Daisy chain structure in the manual is floating.
For the case of abnormal bus occupation in problem 1,
We can solve this problem by giving the last IO2 pin of the TMP107 a pull-up resistor of 10K.
Should the pin float or pull up? There is no exact explanation
4. Are there any special requirements for the initialization of the chip of TMP107
If the first initialization is successful, can the subsequent initialization not be performed (including circuit power-on and power-off)?
5, TMP107 use process, if the frequent initialization, what will be the impact and problems
