NEC PD750008 User Manual
Page 28
8
µPD750008 USER'S MANUAL
Pin name
P00-P03 : Port 0
RESET
: Reset input
P10-P13 : Port 1
TI0
: Timer input 0
P20-P23 : Port 2
PTO0, 1
: Programmable timer output 0, 1
P30-P33 : Port 3
BUZ
: Buzzer clock
P40-P43 : Port 4
PCL
: Programmable clock
P50-P53 : Port 5
INT0, 1, 4 : External vectored interrupt 0, 1, 4
P60-P63 : Port 6
INT2
: External test input 2
P70-P73 : Port 7
X1, 2
: Main system clock oscillation 1, 2
P80-P81 : Port 8
XT1, 2
: Subsystem clock oscillation 1, 2
KR0-KR7 : Key return
NC
: No connection
SCK
: Serial clock
IC
: Internally connected
SI
: Serial input
V
DD
: Positive power supply
SO
: Serial output
V
SS
: Ground
SB0, 1
: Serial bus 0, 1
V
PP
: Programming power supply
MD0-MD3 : Mode selection 0 - 3