+B Input in FR Family FR81S MCUs - KBA218676

Version 3

    Version: **

     

    Question:

    What are +B input pins in FR81S MCUs?

     

    Answer:

    Typically, an input voltage higher than Vcc to a port is not guaranteed. However, when limiting an electric current, a voltage higher than Vcc can be input directly to +B input pins. The current limit value is indicated in the datasheet of the target MCU.

     

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    Note: A +B signal can be input when I/O power supply is ON.