Rainbow Electronics AT90S1200 - Manual (Page 50)

50
AT90S1200
0838H–AVR–03/02
External Clock Drive
Waveforms Figure 37. External Clock Drive
External Clock Drive
VIL1
VIH1
Table 23. External Clock Drive
Symbol Parameter
V
CC
= 2.7V to 4.0V V
CC
= 4.0V to 6.0V
Units Min Max Min Max
1/t
CLCL
Oscillator Frequency 0 4.0 0 12.0 MHz
t
CLCL
Clock Period 250.0 83.3 ns
t
CHCX
High Time 100.0 33.3 ns
t
CLCX
Low Time 100.0 33.3 ns
t
CLCH
Rise Time 1.6 0.5 µs
t
CHCL
Fall Time 1.6 0.5 µs