CHAPTER 2 PIN FUNCTIONS
User’s Manual U15075EJ2V1UD
39
(2) Non-port
pins
Pin Name
I/O
Function
After Reset
Alternate Function
INTP0
P30/CPT90
INTP1
P31/TO50/TMI60
INTP2
P32/TO60
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/TO61
KR0 to KR3
Input
Key return signal detection
Input
P00 to P03
SS20
Input
Serial interface (SIO20) chip select
Input
P22
SCK20
I/O
Serial interface 20 serial clock input/output
Input
P23/ASCK20
SI20
Input
Serial interface 20 of SIO20 serial data input
Input
P25/RxD20
SO20
Output
Serial interface 20 of SIO20 serial data output
Input
P24/TxD20
ASCK20
Input
Serial clock input for asynchronous serial interface
Input
P23/SCK20
RxD20
Input
Serial data input for asynchronous serial interface
Input
P25/SI20
TxD20
Output
Serial data output for asynchronous serial interface
Input
P24/SO20
TO90
Output
16-bit timer (TM90) output
Input
P26
CPT90
Input
Capture edge input
Input
P30/INTP0
TO50
Output
8-bit timer (TM50) output
Input
P31/INTP1/TMI40
TO60 Output
Input
P32/INTP2
TO61 Output
8-bit timer (TM60) output
Input P33/INTP33
TMI60
Input
External count clock input to timer 40
Input
P31/INTP1/TO50
ANI0 to ANI5
Input
A/D converter analog input
Input
P60 to P65
S0 to S4
Output
Output
•
−
•
S5 to S14
Note 1
Output
LCD controller/driver segment signal output
Output
•
−
•
COM0 to COM3 Output
LCD controller/driver common signal output
Output
−
V
LC0
to V
LC2
−
LCD driving voltage
−
•
−
•
CAPH
−
−
•
−
•
CAPL
−
Capacitor connection pin for LCD drive
−
•
−
•
X1 Input
−
•
−
•
X2
−
Connecting crystal resonator for main system clock oscillation
−
•
−
•
CL1
Note 2
Input
−
•
−
•
CL2
Note 2
−
Connection of resonator (R) and capacitor (C) for main system
clock oscillation.
−
•
−
•
XT1 Input
−
•
−
•
XT2
−
Connecting crystal resonator for subsystem clock oscillation
−
•
−
•
RESET
Input
System reset input
Input
•
−
•
V
DD
−
Positive power supply
−
•
−
•
V
SS
−
Ground potential
−
•
−
•
AV
DD
−
A/D converter analog potential
−
AV
SS
−
A/D converter analog ground potential
−
•
−
•
IC
−
Internally connected. Connect directly to V
SS
.
−
•
−
•
V
PP
−
Sets flash memory programming mode. Applies high voltage
when a program is written or verified.
−
•
−
•
Notes
1.
µ
PD789446, 789456 Subseries only
2.
In case of RC oscillation (mask option) only
