Rainbow Electronics AT89S53 - Manual (Page 28)

AT89S53
28
External Data Memory Write Cycle
External Clock Drive Waveforms
External Clock Drive
Symbol Parameter V
CC
= 4.0V to 6.0V
Min Max Units
1/t
CLCL
Oscillator Frequency 0 24 MHz
t
CLCL
Clock Period 41.6 ns
t
CHCX
High Time 15 ns
t
CLCX
Low Time 15 ns
t
CLCH
Rise Time 20 ns
t
CHCL
Fall Time 20 ns