49
CHAPTER 2 PIN FUNCTIONS
User’s Manual U14701EJ3V0UD
(2) Non-port pins (2/2)
Pin Name
I/O
Function
After Reset
Alternate
Function
S0 to S11
Note
Output
LCD controller/driver segment signal output
(Static and dynamic display can be selected)
Output
—
S12 to S23
Note
LCD controller/driver segment signal output
(for dynamic display)
—
S24 to S31
Note
P90 to P97
Note
S32 to S39
Note
P80 to P87
Note
COM0 to
COM3
Output
LCD controller/driver common signal output
(for dynamic display)
Output
—
SCOM0
Output
LCD controller/driver common signal output
(for static display)
Output
—
V
LC0
to V
LC2
—
LCD driving voltage
V
LC0
: Three times V
LC2
output voltage
V
LC1
: Two times V
LC2
output voltage
V
LC2
: Reference voltage
—
—
V
LCDC
—
LCD controller/driver reference voltage adjustment
—
—
CAPH, CAPL
—
Booster capacitor connection for LCD drive voltage
—
—
RESET
Input
System reset input
—
—
X1
Input
Crystal connection for main system clock oscillation
—
—
X2
—
—
—
XT1
Input
Crystal connection for subsystem clock oscillation
—
—
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
—
High-voltage application for program write/verify.
Connect directly to V
SS0
or V
SS1
in normal operation mode.
—
—
Note
Segment signal output pins vary depending on the product.
μ
PD780316, 780318: S0 to S23 (without alternate pin)
μ
PD780326, 780328: S0 to S31 (without alternate pin)
μ
PD780336, 780338: S0 to S39 (without alternate pin)
μ
PD78F0338:
S0 to S39 (S24 to S31 and P90 to P97, and S32 to S39 and P80 to P87 are
alternate-function pins. These functions can be switched with port functions in
8-bit units.)