at89ls52-16si ATMEL Corporation, at89ls52-16si Datasheet - Page 33

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at89ls52-16si

Manufacturer Part Number
at89ls52-16si
Description
At89ls52, Low-voltage Microcontroller With 8k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
29. External Data Memory Write Cycle
30. External Clock Drive Waveforms
31. External Clock Drive
2601B–MICRO–03/05
Symbol
1/t
t
t
t
t
t
CLCL
CHCX
CLCX
CLCH
CHCL
CLCL
0.45V
PORT 0
PORT 2
Parameter
Oscillator Frequency
Clock Period
High Time
Low Time
Rise Time
Fall Time
V
PSEN
CC
ALE
WR
- 0.5V
0.2 V
0.7 V
A0 - A7 FROM RI OR DPL
CC
t
LHLL
t
- 0.1V
AVLL
CC
t
CHCX
P2.0 - P2.7 OR A8 - A15 FROM DPH
t
AVWL
t
LLAX
t
t
QVWX
LLWL
62.5
Min
t
DATA OUT
20
20
CLCX
t
0
QVWH
t
t
WLWH
CLCH
t
CLCL
t
WHQX
t
A0 - A7 FROM PCL
WHLH
A8 - A15 FROM PCH
t
CHCX
Max
16
20
20
INSTR IN
AT89LS52
t
CHCL
Units
MHz
ns
ns
ns
ns
ns
33

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