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Do I have to set registers such as the PFC to enable the weak keeper?

Latest Updated:12/22/2010

Question:

As the MCU includes unused pins (pins with weak keeper), I would like to enable the weak keeper function to reduce external pull-up or pull-down resistors.

Do I have to set registers such as the Pin Function Controller (PFC) to enable the weak keeper?

Answer:

Register setting is not required. Weak keeper function of pins with weak keeper is always enabled, regardless of register setting.
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