Pin - Fujitsu MB95630H Series Hardware Manual

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MB95630H Series

This section provides details of the pin of the external interrupt circuit.

■ Pin of External Interrupt Circuit

This pin serves both as an external interrupt input pin and as a general-purpose I/O port.

If the INT pin is set as an input port by the port direction register (DDR) and the corresponding

external interrupt input is enabled by the external interrupt control register (EIC), that pin

functions as an external interrupt input pin (INT).

The state of a pin can always be read from the port data register (PDR) when that pin is set as

an input port. The value of PDR can be read by using the read-modify-write (RMW) type of

instruction.

MN702-00009-1v0-E

CHAPTER 12 EXTERNAL INTERRUPT CIRCUIT

FUJITSU SEMICONDUCTOR LIMITED

Pin