+B Input in FR Family FR81S MCUs - KBA218676

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Version: **

Question:

What are +B input pins in FR81S MCUs?

Answer:

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

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