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Should DAi pin expects to be set to output mode when using D/A converter?

Latest Updated:03/01/2005

Question:

(D/A Converter)  The DAi pin is supposed to be set to input mode when using the D/A converter. Shouldn't this be output mode ? [2005/03/01]

Answer:

No. When using the D/A converter, the DAi pin must be set to input mode (set the bit corresponding to the port's direction register to "0").
If the port is set to output mode, the port output level and the D/A converter output will clash internally. Therefore, it is necessary to set the direction register to input mode, and then set the DAi output enable bit to "1" (enable). (#104843)
Suitable Products
3803H
3803L