NEC PD750008 User Manual

Page 28

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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

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