at89c4051-12si ATMEL Corporation, at89c4051-12si Datasheet - Page 13

• Manufacturer Part Number: at89c4051-12si
• Description: At89c4051 8-bit Microcontroller With 4k Bytes Flash
• Manufacturer: ATMEL Corporation

18. External Clock Drive Waveforms
19. External Clock Drive
1001E–MICRO–6/05
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
CLCL
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
83.3
Min
30
30
0
V
CC
= 2.7V to 6.0V
Max
12
20
20
41.6
Min
15
15
0
V
CC
= 4.0V to 6.0V
AT89C4051
Max
24
20
20
Units
MHz
ns
ns
ns
ns
ns
13