at89s53-33pc ATMEL Corporation, at89s53-33pc Datasheet - Page 28

• Manufacturer Part Number: at89s53-33pc
• Description: At89s53, In-system Programmable Microcontroller With 12k Bytes Flash. For New Designs Use At89s8253.
• Manufacturer: ATMEL Corporation

External Data Memory Write Cycle
External Clock Drive Waveforms
External Clock Drive
28
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
CLCL
AT89S53
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
41.6
Min
15
15
0
V
CC
= 4.0V to 6.0V
Max
24
20
20
0787E–MICRO–3/06
Units
MHz
ns
ns
ns
ns
ns