External Clock Drive Waveforms; External Clock Drive - Atmel AVR AT90S1200 Manual

External Clock Drive

Waveforms
External Clock Drive
AT90S1200
50
Figure 37. External Clock Drive
VIH1
VIL1
Table 23. 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
V = 2.7V to 4.0V V
CC CC
Min Max Min
0 4.0
250.0 83.3
100.0 33.3
100.0 33.3
1.6
1.6
= 4.0V to 6.0V
Max Units
0 12.0 MHz
ns
ns
ns
0.5 µs
0.5 µs
0838H–AVR–03/02