TS87C54X2-LIB View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
TS87C54X2-LIB Datasheet PDF : 58 Pages
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Symbol
TRLRH
TWLWH
TRLDV
TRHDX
TRHDZ
TLLDV
TAVDV
TLLWL
TLLWL
TAVWL
TQVWX
TQVWH
TWHQX
TRLAZ
TWHLH
TWHLH
TS80C54X2/C58X2
TS87C54X2/C58X2
Table 33. AC Parameters for a Variable Clock: derating formula
Type Standard X2 Clock
-M
-V
-L
Units
Clock
Min
6T-x
3T-x
20
15
25
ns
Min
6T-x
3T-x
20
15
25
ns
Max
5T-x
2.5 T - x
25
23
30
ns
Min
x
x
0
0
0
ns
Max
2T-x
T-x
20
15
25
ns
Max
8T-x
4T -x
40
35
45
ns
Max
9T-x
4.5 T - x
60
50
65
ns
Min
3T-x
1.5 T - x
25
20
30
ns
Max
3T+x
1.5 T + x
25
20
30
ns
Min
4T-x
2T-x
25
20
30
ns
Min
T-x
0.5 T - x
15
10
20
ns
Min
7T-x
3.5 T - x
15
10
20
ns
Min
T-x
0.5 T - x
10
8
15
ns
Max
x
x
0
0
0
ns
Min
T-x
0.5 T - x
15
10
20
ns
Max
T+x
0.5 T + x
15
10
20
ns
10.5.5 External Data Memory Write Cycle
ALE
TWHLH
PSEN
WR
PORT 0
PORT 2
ADDRESS
OR SFR-P2
TLLWL
TWLWH
TLLAX
A0-A7
TAVWL
TQVWX
TQVWH
DATA OUT
ADDRESS A8-A15 OR SFR P2
Figure 19. External Data Memory Write Cycle
TWHQX
Rev. C - 15 January, 2001
51
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