Rainbow Electronics AT89C4051 - Manual (Page 13)

13
AT89C4051
1001D–06/01
External Clock Drive Waveforms
External Clock Drive
Symbol Parameter
V
CC
= 2.7V to 6.0V V
CC
= 4.0V to 6.0V
Units Min Max Min Max
1/t
CLCL
Oscillator Frequency 0 12 0 24 MHz
t
CLCL
Clock Period 83.3 41.6 ns
t
CHCX
High Time 30 15 ns
t
CLCX
Low Time 30 15 ns
t
CLCH
Rise Time 20 20 ns
t
CHCL
Fall Time 20 20 ns