MC68020 Motorola, MC68020 Datasheet - Page 282

• Manufacturer Part Number: MC68020
• Description: (MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
• Manufacturer: Motorola

AC ELECTRICAL CHARACTERISTICSÑREAD AND WRITE CYCLES
10-8
*
*
Num.
9B
*
*
15A
10B
14A
25A
27A
(V
*
9A
*
10A
12A
11
12
13
14
15
16
17
18
20
21
22
23
25
26
27
28
6A
10
6
7
8
9
11
CC
1
8
7
9
= 5.0 V
Clock High to FC, Size, RMC, Address Valid
Clock High to ECS, OCS Asserted
Clock High to Address, Data, FC, Size, RMC
Clock High to Address, FC, Size,
Clock Low to AS, DS Asserted
AS to DS Assertion Skew (Read)
AS Asserted to DS Asserted (Write)
ECS Width Asserted
OCS Width Asserted
ECS, OCS Width Negated
Address, FC, Size, RMC Valid to AS
Clock Low to AS, DS Negated
Clock Low to ECS, OCS Negated
AS, DS Negated to Address, FC, Size,
AS (and DS Read) Width Asserted
DS Width Asserted (Write)
AS, DS Width Negated
DS Negated to AS Asserted
Clock High to AS, DS, R/W, DBEN
AS, DS Negated to R/W Invalid
Clock High to R/W High
Clock High to R/W Low
R/W High to AS Asserted (Read)
R/W Low to DS Asserted (Write)
Clock High to Data-Out Valid
AS, DS Negated to Data-Out Invalid
DS Negated to DBEN Negated (Write)
Data-Out Valid to DS Asserted (Write)
Data-In Valid to Clock Low (Setup) (Read)
Late BERR/HALT Asserted to Clock Low
AS, DS Negated to DSACK», BERR, HALT,
High Impedance
RMC Invalid
(and DS Asserted, Read)
RMC Invalid
High Impedance
(Setup)
AVEC Negated
dc
± 5%; GND = 0 V
Characteristics
dc
; Temperature within defined ranges; see Figures 10-3Ð10-5)
M68020 USERÕS MANUAL
16.67 MHz
Min
Ð15
100
37
20
20
15
15
15
40
40
35
15
15
75
15
15
15
20
Ñ
Ñ
0
0
0
0
3
0
0
0
0
5
0
Max
30
20
60
30
15
30
30
60
30
30
30
80
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Min
Ð10
32
15
15
10
10
10
85
38
38
30
10
10
60
10
10
10
15
Ñ
Ñ
0
0
0
0
3
0
0
0
0
5
0
20 MHz
Max
25
15
50
25
10
25
25
50
25
25
25
65
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ð10
Min
27
15
15
10
70
30
30
25
10
50
10
25 MHz
Ñ
Ñ
0
0
0
0
3
5
6
0
0
0
0
5
5
5
5
5
0
Max
25
12
40
18
10
15
15
40
20
20
25
50
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
**
33.33 MHz
Min
Ð10
22
10
10
50
25
23
18
35
Ñ
Ñ
0
0
0
0
3
5
5
0
0
5
5
0
0
5
5
5
5
5
5
0
MOTOROLA
Max
21
10
30
15
10
15
15
30
15
15
18
40
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns