at89c55-16qa ATMEL Corporation, at89c55-16qa Datasheet - Page 21

• Manufacturer Part Number: at89c55-16qa
• Description: 8-bit Microcontroller With Bytes Flash
• Manufacturer: ATMEL Corporation

External Data Memory Write Cycle
External Clock Drive Waveforms
External Clock Drive
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
Min
30
12
12
0
Max
20
33
20
Units
MHz
ns
ns
ns
ns
ns
4-189