AT90S8535 Datasheet, PDF (106/127 Pages) ATMEL Corporation – 8-bit Microcontroller with 8K Bytes In-System Programmable Flash

External Clock Drive
Waveforms
Figure 74. External Clock
VIH1
VIL1
Table 46. External Clock Drive
Symbol
1/t_CLCL
t_CLCL
t_CHCX
t_CLCX
t_CLCH
t_CHCL
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
V_CC = 2.7V to 6.0V
Min
Max
0
4
250.0
100.0
100.0
1.6
1.6
V_CC = 4.0V to 6.0V
Min
Max
0
8.0
125.0
50.0
50.0
0.5
0.5
Units
MHz
ns
ns
ns
µs
µs
106 AT90S/LS8535
1041H–11/01