CHAPTER 2 PIN FUNCTIONS
Preliminary User’s Manual U17260EJ3V1UD
35
(2) Non-port
pins
(2/2)
Function Name
I/O
Function
After Reset
Alternate Function
TO50
8-bit timer/event counter 50 output
P17/TI50
TO51
8-bit timer/event counter 51 output
P33/TI51/INTP4
TOH0
8-bit timer H0 output
P15
TOH1
Output
8-bit timer H1 output
Input port
P16/INTP5
PCL Output
Clock output (for trimming of high-speed system clock,
subsystem clock)
Input port
P140/INTP6
BUZ
Output
Buzzer output
Input port
P141/INTP7
ANI0 to ANI7
Input
A/D converter analog input
Analog input P20 to P27
AV
REF
Input
A/D converter reference voltage input and positive power
supply for P20 to P27 and A/D converter
−
−
AV
SS
−
A/D converter ground potential. Make the same potential as
EV
SS
or V
SS
.
−
−
KR0 to KR7
Input
Key interrupt input
Input port
P70 to P77
REGC
−
Connecting regulator output (2.5 V) stabilization capacitance
for internal operation.
Connect to V
SS
via a capacitor (0.47
µ
F: target).
−
−
RESET
Input
System reset input
−
−
EXLVI
Input
Potential input for external low-voltage detection
Input port
P120/INTP0
X1 Input
P121/OCD0A
Note
X2
−
Connecting resonator for main system clock
Input port
P122/EXCLK/
OCD0B
Note
EXCLK
Input
External clock input for main system clock
Input port
P122/X2/
OCD0B
Note
XT1 Input
Input
port
P123
XT2
−
Connecting resonator for subsystem clock
Input port
P124/EXCLKS
EXCLKS
Input
External clock input for subsystem clock
Input port
P124/XT2
V
DD
−
Positive power supply (P121 to P124 and except for ports)
−
−
EV
DD
−
Positive power supply for ports (except for P20 to P27 and
P121 to P124)
−
−
V
SS
−
Ground potential (P121 to P124 and except for ports)
−
−
EV
SS
−
Ground potential for ports (except for P20 to P27 and P121 to
P124)
−
−
FLMD0
−
Flash memory programming mode setting
−
−
OCD0A
Note
P121/X1
OCD1A
Note
Input
P31/INTP2
OCD0B
Note
P122/X2/EXCLK
OCD1B
Note
−
Connection for on-chip debug mode setting pins
(
µ
PD78F0537D only)
Input port
P32/INTP3
Note
µ
PD78F0537D only