Fujitsu FR81S User Manual
CHAPTER 2: HANDLING THE DEVICE
3. Application Notes
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : HANDLING THE DEVICE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
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3.1. Function Switching of a Multiplexed Port
Function switching of a multiplexed port is shown.
To switch between the PORT function and the multiplexed pin function, use the PFR (port function
register). However, if a pin is also used for an external bus, its function is switched by the external bus
setting. For details, see "CHAPTER: I/O PORTS".
MB91520 Series
MN705-00010-1v0-E
96