at89lv55 ATMEL Corporation, at89lv55 Datasheet - Page 25

• Manufacturer Part Number: at89lv55
• Description: At89lv55 8-bit Microcontroller With 20k Bytes Flash
• Manufacturer: ATMEL Corporation

28. External Clock Drive
29. Serial Port Timing: Shift Register Mode Test Conditions
The values in this table are valid for V
0811D–MICRO–3/06
Symbol
1/t
t
t
t
t
t
Symbol
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
XLXL
QVXH
XHQX
XHDX
XHDV
CLCL
Parameter
Serial Port Clock Cycle Time
Output Data Setup to Clock Rising
Edge
Output Data Hold After Clock
Rising Edge
Input Data Hold After Clock Rising
Edge
Clock Rising Edge to Input Data
Valid
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
CC
= 5.0V ± 20% and Load Capacitance = 80 pF.
Min
700
1.0
50
0
12 MHz Osc
Max
700
83.3
Min
20
20
0
10t
2t
CLCL
12t
CLCL
Min
Variable Oscillator
0
CLCL
- 117
- 133
Max
12
20
20
10t
CLCL
Max
AT89LV55
- 133
Units
MHz
ns
ns
ns
ns
ns
Units
ns
ns
ns
ns
ns
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