Manual

106
AT90S/LS8535
1041H–11/01
External Clock Drive
Waveforms
Figure 74. External Clock
Table 46. External Clock Drive
Symbol Parameter
V
CC
= 2.7V to 6.0V V
CC
= 4.0V to 6.0V
UnitsMin Max Min Max
1/t
CLCL
Oscillator Frequency 0 4 0 8.0 MHz
t
CLCL
Clock Period 250.0 125.0 ns
t
CHCX
High Time 100.0 50.0 ns
t
CLCX
Low Time 100.0 50.0 ns
t
CLCH
Rise Time 1.6 0.5 µs
t
CHCL
Fall Time 1.6 0.5 µs
VIL1
VIH1