NEC PD78F9488 User Manual
Page 38
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 P73
Note 1
Input Port
7.
4-bit input port.
(Only when input port is selected by mask option or port
function register)
Input
−
P80 to P87
Note 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
µPD789488, 789489 or a port mode register in
the
µPD78F9488, 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
µPD789488, 789489 or a port mode register in
the
µPD78F9488, 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 KR7
Note 1
Input
Key return signal detection
Input
P00 to P07
KR00 to
KR07
Note 2
P00 to P07
KR10 to
KR17
Note 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
RIN
Note 2
Input
Remote control reception data input
Input
P34
Notes 1.
µPD789488 and 78F9488 only
2.
µPD789489 and 78F9489 only