CHAPTER 2 PIN FUNCTIONS
User’s Manual U15331EJ4V1UD
38
(1) Port pins (2/2)
Pin Name I/O Function After Reset Alternate Function
P70 to P73Note 1 Input Port 7.
4-bit input port.
(Only when input port is selected by mask option or port
function register)
Input −
P80 to P87Note 2 I/O Port 8.
8-bit I/O port.
(Only when I/O port is selected by mask option or port function
register)
Input −
Notes 1. Whether to use these pins as input port pins (P70 to P73) or segment outputs (S16 to S19) can be
selected in 1-bit units by means of a mask option in the
µ
PD789488, 789489 or a port mode register in
the
µ
PD78F9488, 78F9489 (refer to 4.3 (3) Port function registers and CHAPTER 20 MASK
OPTIONS).
2. Whether to use these pins as I/O port pins (P80 to P87) or segment outputs (S20 to S27) can be
selected in 1-bit units by means of a mask option in the
µ
PD789488, 789489 or a port mode register in
the
µ
PD78F9488, 78F9489 (refer to 4.3 (3) Port function registers and CHAPTER 20 MASK
OPTIONS).
(2) Non-port pins (1/2)
Pin Name I/O Function After Reset Alternate Function
INTP0 P30/TO50/TMI60
INTP1 P31/TO60
INTP2 P32/TMI61/TO61
INTP3
Input External interrupt input for which the valid edge (rising edge, falling
edge, or both rising and falling edges) can be specified.
Input
P33/CPT20/TO20
KR0 to KR7Note 1 Input Key return signal detection Input P00 to P07
KR00 to
KR07Note 2
P00 to P07
KR10 to
KR17Note 2
Input Key return signal detection Input
P60/ANI0 to
P67/ANI7
TO20 Output 16-bit timer 20 output Input P33/INTP3/CPT20
CPT20 Output Capture edge input of 16-bit timer 20 Input P33/INTP3/TO20
TO50 Output 8-bit timer 50 output Input P30/INTP0/TMI60
TO60 Output 8-bit timer 60 output Input P31/INTP1
TO61 Output 8-bit timer 61 output Input P32/INTP2/TMI61
TMI60 Input External count clock input to 8-bit timer 60 Input P30/INTP0/TO50
TMI61 Input External count clock input to 8-bit timer 61 Input P32/INTP2/TO61
SCK20 P20/ASCK20
SCK10
I/O Serial clock input/output of serial interface Input
P23
SO20 P21/TxD20
SO10
Output Serial data output of serial interface Input
P24
SI20 P22/RxD20
SI10
Input Serial data input of serial interface
Input
P25
ASCK20 Input Serial clock input of asynchronous serial interface
Input P20/SCK20
TxD20 Output Serial data output of asynchronous serial interface Input P21/SO20
RxD20 Input Serial data input of asynchronous serial interface
Input P22/SI20
RINNote 2 Input Remote control reception data input Input P34
Notes 1.
µ
PD789488 and 78F9488 only
2.
µ
PD789489 and 78F9489 only