
Electrical Characteristics
MOTOROLA
MC68360 USER’S MANUAL
10-9
10.9 BUS OPERATION AC TIMING SPECIFICATIONS
(The electrical specifications in this document are preliminary; See Figure 10-3–Figure 10-19)
Num.
Characteristic
Symbol
3.3 V/5.0 V
25.0 MHz
Min
0
5.0V
Unit
33.34MHz
Min
0
Max
15
Max
12
6
CLKO1 High to Address, FC, SIZ,
RMC
Valid
tCHAV
tCHAV
tCHAZx
ns
6A
CLKO1 High to Address Valid (GAMX=1)
0
20
0
15
ns
7
CLKO1 High to Address, Data, FC, SIZ,
RMC
High Impedance
CLKO1 High to Address, FC, SIZ,
RMC
Invalid
0
40
0
30
ns
8
tCHAZn
tCLSA
0
—
0
—
ns
9
CLKO1 Low to
AS
,
DS
,
OE
,
WE
,
IFETCH
,
IPIPE,
IACKˉ
Asserted
CLKO1 Low to
CSˉ/RASˉ
3
20
3
15
ns
910
9B11
9A2,10
9C2,11
1110
tCLSA
4
16
4
12
ns
CLKO1 High to
CSˉ/RASˉ
Asserted
tCHCA
4
16
4
12
ns
AS
to
DS
or
CSˉ/RASˉ
or
OE
Asserted (Read)
tSTSA
–6
6
-5.625
5.625
ns
AS
to
CSˉ/RASˉ
Asserted
tSTCA
14
26
9
21
ns
Address, FC, SIZ,
RMC
Valid to
AS
,
CSˉ/RASˉ,
OE, WE
(and
DS
Read) Asserted
Address, FC, SIZ,
RMC
Valid to
CSˉ/RASˉ
As-
serted
CLKO1 Low to
AS
,
DS
,
OE, WE
,
IFETCH,
IPIPE,
IACKˉ
Negated
CLKO1 Low to
CSˉ/RASˉ
Negated
tAVSA
10
—
8
—
ns
11A11
tAVCA
30
—
—
ns
1212
tCLSN
3
20
3
15
ns
1216
12A13,16 CLKO1 High to
CSˉ/RASˉ
Negated
12B
CS negate to WE negate (CSNTQ=1)
tCLSN
4
16
4
12
ns
tCHCN
tCSTW
tSNAI
4
16
4
12
ns
15
—
12
—
ns
1312
AS
,
DS
,
CSˉ
,
OE
,
WE
,
IACKˉ
Negated to Ad-
dress, FC, SIZ Invalid (Address Hold)
CSˉ
Negated to Address, FC, SIZ Invalid (Ad-
dress Hold)
AS
,
CSˉ, OE, WE
(and
DS
Read) Width Asserted
10
—
7.5
—
ns
13A13
tCNAI
30
—
—
ns
1410,12
14C11,13
CSˉ
Width Asserted
14A
DS
Width Asserted (Write)
tSWA
tCWA
75
—
—
ns
35
—
—
ns
tSWAW
tSWDW
35
—
—
ns
14B
AS
,
CSˉ
,
OE
,
WE
,
IACKˉ
(and
DS
Read) Width
Asserted (Fast Termination Cycle)
CSˉ
Width Asserted (Fast Termination Cycle)
35
—
—
ns
14D13
153,10,12
AS
,
DS
,
CSˉ, OE, WE
Width Negated
16
CLKO1 High to
AS
,
DS
, R/
W
High Impedance
tCWDW
15
—
10
—
ns
tSN
35
—
—
ns
tCHSZ
tSNRN
tCNRN
tCHRH
tCHRL
tRAAA
—
40
—
30
ns
1712
17A13
18
AS
,
DS
,
CSˉ, WE
Negated to R
/W
High
10
—
7.5
—
ns
CSˉ
Negated to R/
W
High
30
—
—
ns
CLKO1 High to R/
W
High
0
20
0
15
ns
20
CLKO1 High to R/
W
Low
0
20
0
15
ns
2110
R/
W
High to
AS
,
CSˉ, OE
Asserted
10
—
7.5
—
ns