NEC uPD75P3116 User Manual
Page 5
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PD75P3116
5
Data Sheet U11369EJ3V0DS
PIN IDENTIFICATIONS
P00 to P03:
Port 0
COM0 to COM3:
Common output 0 to 3
P10 to P13:
Port 1
V
LC0
to
V
LC2
:
LCD power supply 0 to 2
P20 to P23:
Port 2
BIAS:
LCD power supply bias control
P30 to P33:
Port 3
LCDCL:
LCD clock
P50 to P53:
Port 5
SYNC:
LCD synchronization
P60 to P63:
Port 6
TI0 to TI2:
Timer input 0 to 2
P80 to P83:
Port 8
PTO0 to PTO2:
Programmable timer output 0 to 2
P90 to P93:
Port 9
BUZ:
Buzzer clock
KR0 to KR3:
Key return 0 to 3
PCL:
Programmable clock
SCK:
Serial clock
INT0, 1, 4:
External vectored interrupt 0, 1, 4
SI:
Serial input
INT2:
External test input 2
SO:
Serial output
X1, X2:
Main system clock oscillation 1, 2
SB0, SB1:
Serial data bus 0, 1
XT1, XT2:
Subsystem clock oscillation 1, 2
RESET:
Reset
V
PP
:
Programming power supply
MD0 to MD3:
Mode selection 0 to 3
V
DD
:
Positive power supply
D0 to D7:
Data bus 0 to 7
Vss:
Ground
S0 to S23:
Segment output 0 to 23