TS68EN360
7.7
Bus Operation AC Timing Specifications
Table 7-6.
GND = 0 VDC, TC = -55 to +125°C. The electrical specifications in this document are preliminary
(See Figure 7-3 to Figure 7-19)
25 MHz
33.34 MHz
Number
Characteristic
Symbol
tCHAV
Min
Max
15
Min
Max
12
Unit
ns
6
CLKO1 High to Address, FC, SIZ, RMC Valid
CLKO1 High to Address Valid (GAMX = 1)
0
0
0
0
6A
tCHAV
20
15
ns
CLKO1 High to Address, Data, FC, SIZ, RMC High
Impedance
7
8
9
tCHAZx
tCHAZn
tCLSA
0
-2
3
40
–
0
-2
3
30
–
ns
ns
ns
CLKO1 High to Address, Data, FC, SIZ, RMC
Invalid
CLKO1 Low to AS, DS, OE, WE, IFETCH, IPIPE,
IACKx Asserted
20
15
9(10)
CLKO1 Low to CSx/RASx Asserted
CLKO1 High to CSx/RASx Asserted
AS to DS or CSx/RASx or OE Asserted (Read)
AS to CSx/RASx Asserted
tCLSA
tCHCA
tSTSA
tSTCA
4
4
16
16
6
4
12
12
ns
ns
ns
ns
9B(11)
4
-5.625
9
9A(2)(10)
9C(2)(11)
-6
14
5.625
21
26
Address, FC, SIZ, RMC, valid to AS, CSx/RASx,
OE, WE, (and DS Read) Asserted
11(10)
11A(11)
12
tAVSA
tAVCA
tCLSN
10
30
3
–
–
8
22.5
3
–
–
ns
ns
ns
Address, FC, SIZ, RMC, Valid to CSx/RASx
Asserted
CLKO1 Low to AS, DS, OE, WE, IFETCH, IPIPE,
IACKx Negated
20
15
12(16)
12A(13)(16)
12B
CLKO1 Low to CSx/RASx Negated
CLKO1 High to CSx/RASx Negated
CS negate to WE negate (CSNTQ = 1)
tCLSN
tCHCN
4
4
16
16
–
4
4
12
12
–
ns
ns
ns
AtmelTW
15
12
AS, DS, CSx, OE, WE, IACKx Negated to Address,
FC, SIZ Invalid (Address Hold)
13(12)
tSNAI
tCNAI
10
30
–
–
7.5
–
–
ns
ns
CSx Negated to Address, FC, SIZ, Invalid (Address
Hold)
13A(13)
22.5
14(10)(12)
14C(11)(13)
14A
AS, CSx, OE, WE (and DS Read) Width Asserted
CSx Width Asserted
tSWA
tCWA
75
35
35
–
–
–
56.25
26.25
26.25
–
–
–
ns
ns
ns
DS Width Asserted (Write)
tSWAW
AS, CSx, OE, WE, IACKx, (and DS Read) Width
Asserted (Fast Termination Cycle)
14B
tSWDW
35
–
26.25
–
ns
14D(13)
CSx Width Asserted (Fast Termination Cycle)
tCWDW
tSN
15
35
–
–
–
10
26.25
–
–
–
ns
ns
ns
ns
ns
ns
15(3)(10)(12) AS, DS, CSx, OE, WE Width Negated
16
17(12)
17A(13)
18
CLKO1 High to AS, DS, R/W High Impedance
AS, DS, CSx, WE Negated to R/W High
CSx Negated to R/W High
tCHSZ
tSNRN
tCNRN
tCHRH
40
–
30
–
10
30
0
7.5
22.5
0
–
–
CLKO1 High to R/W High
20
15
19
2113B–HIREL–06/05
ATMEL [ ATMEL ]
