12-8
MC68341 USER’S MANUAL
MOTOROLA
12.7 AC TIMING SPECIFICATIONS - PRELIMINARY
(GND = 0 Vdc, TA = 0 to 70
°C; see numbered notes; see Figures 12-2–12-13)
3.3 V or
5.0 V
16.78 MHz
25.16 MHz
Num.
Characteristic
Symbol
Min
Max
Min
Max
Unit
6
CLKOUT High to Address, FC, SIZ Valid
tCHAV
030
020
ns
6A
CLKOUT High to FC3, RMC Valid
tCHAVB
035
025
ns
7
CLKOUT High to Address, Data, FC, SIZ, RMC
High Impedance
tCHAZx
0
60
0
40
ns
8
CLKOUT High to Address, FC, SIZ, RMC
Invalid
tCHAZn
0
—
0
—
ns
99
CLKOUT Low to AS , DS, CS, IFETCH , IPIPE,
IACK≈ Asserted
tCLSA
3
30
3
20
ns
9A2
AS to DS or CS Asserted (Read)
tSTSA
–15
15
–6
6
ns
9B
CLKOUT High to AS68K , CS, UDS, LDS
Asserted
3
30
3
20
ns
9C
AS68K to UDS , LDS, or CS Asserted (Read)
–15
15
–6
6
ns
11
Address, FC, SIZ, RMC Valid to AS , CS (and
DS Read) Asserted
tAVSA
15
—
10
—
ns
11A
Address, FC, SIZ, RMC Valid to AS68K , CS
(and UDS /LDS Read) Asserted
tAVSKA
45
—
30
—
ns
12
CLKOUT Low to AS , DS, CS, IFETCH , IPIPE ,
AS68K , LDS, UDS, LWE, UWE Negated
tCLSN
3
30
3
20
ns
13
AS , DS, CS, AS68K , UDS, LDS , UWE, LWE ,
IACK≈ Negated to Address, FC, SIZ Invalid
(Address Hold)
tSNAI
15
—
10
—
ns
14
AS , CS (and DS Read) Width Asserted
tSWA
100
—
70
—
ns
14A
DS Width Asserted (Write)
tSWAW
45
—
30
—
ns
14B
AS , CS, IACK≈ (and DS Read) Width Asserted
(Fast Termination Cycle)
tSWDW
40
—
30
—
ns
14C
AS68K , CS (and UDS/ LDS Read) Width
Asserted
tSWA
70
—
50
—
ns
14D
UDS, LDS Width Asserted (3-Clock Write)
tSWBW
15
—
10
—
ns
153
AS , DS, CS Width Negated
tSN
40
—
30
—
ns
16
CLKOUT High to AS , DS, R/ W, AS68K, UDS,
LDS, UWE, LWE High Impedance
tCHSZ
—
60
—
40
ns
17
AS , DS, CS, AS68K, UDS, LDS, UWE, LWE,
Negated to R/ W High
tSNRN
15
—
10
—
ns
18
CLKOUT High to R/W High
tCHRH
030
020
ns
20
CLKOUT High to R/W Low
tCHRL
030
020
ns
219
R/ W High to AS , CS Asserted
tRAAA
15
—
10
—
ns
21A
R/ W High to AS68K, CS Asserted
tRABA
45
—
30
—
ns
22
R/ W Low to DS Asserted (Write)
tRASA
70
—
47
—
ns
22A
R/ W Low to LDS, UDS Asserted (Write)
tRADA
100
—
67
—
ns
23
CLKOUT High to Data-Out Valid
tCHDO
—30
—20
ns
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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