Are there any problems if a write/read to/from the port data register (PnD) is performed in the unit of bit instead of in the unit of byte in the 1000 series? Are there any possibilities that the non-targeted bits are also changed at operation in the unit of bit?|FAQ|ROHM Semiconductor

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Are there any problems if a write/read to/from the port data register (PnD) is performed in the unit of bit instead of in the unit of byte in the 1000 series?
Are there any possibilities that the non-targeted bits are also changed at operation in the unit of bit?
- There is no problem.
  Because the input data register separates from the output data register, non-targeted bits are not changed at operation in the unit of bit.
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