User's Manual

MSM80C154/83C154/85C154
228
6.8 XTAL1 External Clock Input Waveform Conditions
Parameter
Oscillator Freq.
High Time
Low Time
Rise Time
Fall Time
Symbol
1/tCLCL
tCHCX
tCLCX
tCLCH
tCHCL
Min
0
15
15
—
—
Max
24
—
—
5
5
Unit
MHz
ns
ns
ns
ns
tCHCX
tCHCL
tCHCX tCLCH
tCLCL
0.7V
CC
0.2VCC–0.1
VCC–0.5
0.45V
EXTERMINAL
OSCILLATOR
SIGNAL
EXTERMINAL
OSCILLATOR
SIGNAL
XTAL2
XTAL1
V
SS
NC