External Clock Drive Waveforms - Atmel AVR AT90S4434 Preliminary

External Clock Drive Waveforms

Figure 74. External Clock
VIL1
Table 47. External Clock Drive
Symbol Parameter
1/t Oscillator Frequency
CLCL
t Clock Period
CLCL
t High Time
CHCX
t Low Time
CLCX
t Rise Time
CLCH
t Fall Time
CHCL
VIH1
V
Min
0
250.0
100.0
100.0
AT90S/LS4434 and AT90S/LS8535
= 2.7V to 6.0V
CC
Max
4
1.6
1.6
V = 4.0V to 6.0V
CC
Min Max
0 8.0
125.0
50.0
50.0
0.5
0.5
Units
MHz
ns
ns
ns
µs
µs
99