CHAPTER 2 PIN FUNCTIONS
User’s Manual U15331EJ4V1UD
39
(2) Non-port pins (2/2)
Pin Name
I/O
Function
After Reset
Alternate Function
S0 to S15
LCD controller/driver segment signal outputs
Low-level
output
–
S16 to S19
Note 1
Only when segment output is selected by
mask option
–
S20 to S27
Note 2
Output
Only when segment output is selected by
mask option
–
COM0 to COM3 Output LCD controller/driver common signal outputs
Low-level
output
–
V
LC0
to V
LC2
–
LCD drive voltage
–
–
CAPH, CAPL
−
LCD drive voltage booster capacitor connection pin
–
–
ANI0 to ANI7
–
A/D converter analog input
–
P60 to P67
Note 3
P60/KR10 to
P67/KR17
Note 4
AV
SS
–
A/D converter ground potential
–
–
AV
DD
–
A/D converter analog power supply
–
–
X1 Input
– –
X2 –
Connecting crystal resonator 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
– –
IC0
–
Internally connected. Connect directly to V
SS
. –
–
V
PP
–
Sets flash memory programming mode. Used to apply high
voltage when a program is written or verified.
– –
Notes 1.
Whether to use these pins as input ports pins (P70 to P73) or segment outputs (S16 to S19) can be
selected in 1-bit units by means of a mask option in the
µ
PD789488, 789489 or a port mode register in
the
µ
PD78F9488, 78F9489 (refer to
4.3(3) Port function registers
and
CHAPTER 20 MASK
OPTIONS
).
2.
Whether to use these pins as I/O port pins (P80 to P87) or segment outputs (S20 to S27) can be
selected in 1-bit units by means of a mask option in the
µ
PD789488, 789489 or a port mode register in
the
µ
PD78F9488, 78F9489 (refer to
4.3(3) Port function registers
and
CHAPTER 20 MASK
OPTIONS
).
3.
µ
PD789488 and 78F9488 only
4.
µ
PD789489 and 78F9489 only