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(2) Non-port pins
Pin Name
Input/Output
INTP0 to INTP2
Input
SI
Input
SO
Output
SCK
Input/Output
RxD
Input
TxD
Output
TI00
Input
TI01
TI02
TIO2
Input/Output
TIO3
PCL
Output
SGOA
Output
SGOF
SGO
TPO
Output
S0 to S4
Output
S5 to S12
S13 to S18
S19
COM0 to COM3
Output
V
—
LCD
SM11 to SM14
Output
SM21 to SM24
SM31 to SM34
SM41 to SM44
ANI0 to ANI4
Input
AV
Input
REF
AV
—
SS
RESET
Input
X1
Input
X2
—
SMV
—
DD
SMV
—
SS
V
—
DD
V
—
SS
V
—
PP
IC
—
32
CHAPTER 2 PIN FUNCTION
Function
External interrupt request input with specifiable valid edges
(rising edge, falling edge, both rising and falling edges).
Serial interface serial data input.
Serial interface serial data output.
Serial interface serial data input/output.
Asynchronous serial interface serial data input.
Asynchronous serial interface serial data output.
Capture trigger signal input to capture register (CR00).
Capture trigger signal input to capture register (CR01).
Capture trigger signal input to capture register (CR02).
8-bit timer (TM2) input/output.
8-bit timer (TM3) input/output.
Clock output (for main system clock trimming).
Sound generator signal output.
Prescaler output of 16-bit timer (TM0).
Segment signal output of LCD controller/driver.
Common signal output of LCD controller/driver.
LCD driving power supply.
Meter control signal output.
A/D converter analog input.
A/D converter reference voltage input (shared with analog
power supply).
A/D converter ground potential. Same potential as V
System reset input.
Crystal connection for main system clock oscillation.
Power supply for meter controller/driver.
Ground potential for meter controller/driver.
Positive power supply.
Ground potential.
High-voltage application for program write/verify.
Connect directly to V
in normal operating mode.
SS
Internally connected. Connect directly to V
After Reset
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Input
Output
—
Hi-Z
Input
—
.
—
SS
—
—
—
—
—
—
—
—
.
—
SS
Alternate
Function
P00 to P02
P52
P51
P50
P53
P54
P40
P41
P42
P43
P44
SGOA/P60
PCL/P60
SGO/P61
SGOF/P61
P81/S19
—
P97 to P90
P87 to P82
P81/TPO
—
—
P20 to P23
P24 to P27
P30 to P33
P34 to P37
P10 to P14
—
—
—
—
—
—
—
—
—
—
—
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