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Is there a difference in the A/D conversion result depending on whether using the internal pull-up resistor or not?

Last Updated:12/26/2017

Question:

When using the A/D converter, is there a difference in the A/D conversion result depending on whether using the internal pull-up resistor selected in the analog input pin pull-up control register or not?

Answer:

The A/D conversion results vary based on the availability of the internal pull-up resistors selected in the analog input pin pull-up control register. When using the A/D converter, if changes in the A/D conversion results causes a problem, set to ‘no internal pull-up resistor selected’ in the analog input pin pull-up control register.
Suitable Products
R8C/1x
R8C/2x
R8C/3x
R8C/38A
R8C/Lx
R8C/Mx