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If ports are pull up/down, is there a problem connecting I/0 to power?

Latest Updated:03/18/2009

Question:

When the ports are pulled-up or pulled-down is there any problem if I connect an I/O port to the power supply directly ?

Answer:

Since it is possible that an over-current or under-current condition may occur and this may result in damage to the input protection circuit ( problems such as variation of power supply voltage etc.) please connect a current limiting resistor between;power supply and pin
Suitable Products
H8/300H Tiny