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41
CHAPTER 3 PIN FUNCTIONS (
μ
PD780078 SUBSERIES)
User’s Manual U14260EJ3V1UD
(2) Non-port pins (2/2)
Pin Name
I/O
Function
After Reset
Alternate
Function
TI011
Input
Capture trigger input to capture register (CR001) of 16-bit
timer/event counter 01
Input
P74/PCL
TI50
External count clock input to 8-bit timer/event counter 50
P72/TO50
TI51
External count clock input to 8-bit timer/event counter 51
P73/TO51
TO00
Output
16-bit timer/event counter 00 output
Input
P70/TI000
TO01
16-bit timer/event counter 01 output
P75/TI001/BUZ
TO50
8-bit timer/event counter 50 output
P72/TI50
TO51
8-bit timer/event counter 51 output
P73/TI51
PCL
Output
Clock output (for main system clock and subsystem clock
trimming)
Input
P74/TI011
BUZ
Output
Buzzer output
Input
P75/TI001/TO01
AD0 to AD7
I/O
Lower address/data bus when expanding external memory
Input
P40 to P47
A8 to A15
Output
Higher address bus when expanding external memory
Input
P50 to P57
RD
Output
Strobe signal output for read operation from external memory
Input
P64
WR
Strobe signal output for write operation from external memory
P65
WAIT
Input
Wait insertion when accessing external memory
Input
P66
ASTB
Output
Strobe output externally latching address information
output to ports 4 and 5 to access external memory
Input
P67
ANI0 to ANI7
Input
A/D converter analog input
Input
P10 to P17
ADTRG
Input
A/D converter trigger signal input
Input
P03/INTP3
AV
REF
Input
A/D converter reference voltage input and analog power supply
—
—
AV
SS
—
A/D converter ground potential. Connect to V
SS0
or V
SS1
.
—
—
RESET
Input
System reset input
Input
—
X1
Input
Resonator connection for main system clock
—
—
X2
—
—
—
XT1
Input
Resonator connection for subsystem clock
—
—
XT2
—
—
—
V
DD0
—
Positive power supply for ports
—
—
V
DD1
—
Positive power supply (other than ports)
—
—
V
SS0
—
Ground potential for ports
—
—
V
SS1
—
Ground potential (other than ports)
—
—
IC
—
Internally connected. Connect directly to V
SS0
or V
SS1
.
—
—
V
PP
—
Flash memory programming mode setting.
High-voltage application for program write/verify
—
—