48
CHAPTER 2 PIN FUNCTIONS
User’s Manual U14701EJ3V0UD
Pin Name
I/O
Function
After Reset
Alternate
Function
INTP0
Input
Input
P00
INTP1
P01
INTP2
P02
INTP3
P03/ADTRG
INTP4
P04
INTP5
P05/BUZ/PCL
SI1
Input
Serial interface serial data input
Input
P23
SI3
P20/R
X
D0
SO1
Output
Serial interface serial data output
Input
P24
SO3
P21/T
X
D0
SCK1
I/O
Serial interface serial clock input/output
Input
P25
SCK3
P22
RxD0
Input
Asynchronous serial interface serial data input
Input
P20/SI3
TxD0
Output
Asynchronous serial interface serial data output
Input
P21/SO3
TI00
Input
External count clock input to 16-bit timer/event counter 0
Capture trigger input to capture registers (CR00, CR01) of
16-bit timer/event counter 0
Input
P31
TI01
Capture trigger input to capture register (CR00) of 16-bit
timer/event counter 0
P32
TI4
External count clock input to 16-bit timer/event counter 4
P71
TO0
Output
16-bit timer/event counter 0 output
Input
P30
TO4
16-bit timer/event counter 4 output
P70
TI50
Input
External count clock input to 8-bit timer/event counter 50
Input
P33/TO50
TI51
External count clock input to 8-bit timer/event counter 51
P34/TO51
TI52
External count clock input to 8-bit timer/event counter 52
P73
TO50
Output
8-bit timer/event counter 50 output
Input
P33/TI50
TO51
8-bit timer/event counter 51 output
P34/TI51
TO52
8-bit timer/event counter 52 output
P72
PCL
Output
Clock output (for main system clock, subsystem clock trimming)
Input
P05/INTP5/BUZ
BUZ
Output
Buzzer output
Input
P05/INTP5/PCL
ANI0 to ANI7
Input
Analog input of A/D converter
Input
P10 to P17
ANI8, ANI9
—
ADTRG
Input
Trigger signal input of A/D converter
Input
P03/INTP3
AV
REF0
Input
Reference voltage input of A/D converter
—
—
AO0
Output
Analog output of D/A converter
Input
P120
AV
REF1
Input
Reference voltage input of D/A converter
—
—
AV
SS0
—
Ground potential for A/D converter and D/A converter.
Supply the same potential as that of V
SS0
or V
SS1
.
—
—
External interrupt request input with specifiable valid edges
(rising edge, falling edge, both rising and falling edges)
(2) Non-port pins (1/2)