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CHAPTER 2
PIN FUNCTIONS
User’s Manual U12790EJ2V0UD
2.2.6 P50 to P57 (Port 5)
These are 8-bit I/O port pins.
They can be set to input or output mode in 1-bit units using port mode register 5.
2.2.7 P60 to P67 (Port 6)
These are 8-bit I/O port pins.
They can be set to input or output mode in 1-bit units using port mode register 6.
2.2.8 P70 to P77 (Port 7)
These are 8-bit I/O port pins. Besides serving as I/O port pins, they also have serial interface data I/O, clock
I/O, and asynchronous serial interface data I/O functions.
The following operating modes can be specified in 1-bit units.
(1) Port mode
These pins function as an 8-bit I/O port that can be set to input or output mode in 1-bit units using port mode
register 7.
(2) Control mode
These pins function as serial interface data I/O, clock I/O, and asynchronous serial interface data I/O pins.
(a) SI3 and SO3
These are serial data I/O pins of the serial interface.
(b) SCK3
This is a serial clock I/O pin of the serial interface.
(c) RXD0, TXD0 (
PD178076, 178078, and 178F098 only)
These are serial data I/O pins of the asynchronous serial interface.
2.2.9 P100 to P102 (Port 10)
These are 3-bit I/O port pins. Besides serving as I/O port pins, they can also be used as the input pins of an AM
intermediate frequency counter and an FM intermediate frequency counter.
The following operating modes can be specified in 1-bit units.
(1) Port mode
These pins function as a 3-bit I/O port that can be set to input or output mode in 1-bit units using port mode
register 10.
(2) Control mode
These pins can be used as the input pins of the AM intermediate frequency counter and FM intermediate
frequency counter.
(a) AMIFC
This is an input pin of the AM intermediate frequency counter.
(b) FMIFC
This is an input pin of the FM intermediate frequency counter or AM intermediate frequency counter.