11-8
MC68340 USER’S MANUAL
MOTOROLA
11.7 AC TIMING SPECIFICATIONS (See notes (a), (b), (c), and (d) corresponding to part operation,
GND = 0 Vdc, TA = 0 to 70
°C; see numbered notes; see Figures 11-2–11-11)
3.3 V
3.3 V or
5.0 V
8.39 MHz
16.78 MHz
25.16 MHz
Num.
Characteristic
Symbol
Min
Max
Min
Max
Min
Max
Unit
6
CLKOUT High to Address, FC, SIZ,
RMC Valid
tCHAV
060
030
020
ns
7
CLKOUT High to Address, Data, FC, SIZ,
RMC
High Impedance
tCHAZx
0
120
0
60
0
40
ns
8
CLKOUT High to Address, FC, SIZ,
RMC
Invalid
tCHAZn
0
—
0
—
0
—
ns
99
CLKOUT Low to
AS, DS, CS, IFETCH, IPIPE,
IACK
≈ Asserted
tCLSA
3
60
3
30
3
20
ns
9A2
AS to DS or CS Asserted (Read)
tSTSA
–30
30
–15
15
–6
6
ns
11
Address, FC, SIZ,
RMC Valid to AS, CS (and
DS Read) Asserted
tAVSA
30
—
15
—
10
—
ns
12
CLKOUT Low to
AS, DS, CS, IFETCH,
IPIPE, IACK
≈ Negated
tCLSN
3
60
3
30
3
20
ns
13
AS, DS, CS, IACK
≈ Negated to Address, FC,
SIZ Invalid (Address Hold)
tSNAI
30
—
15
—
10
—
ns
14
AS, CS (and DS Read) Width Asserted
tSWA
200
—
100
—
70
—
ns
14A
DS Width Asserted (Write)
tSWAW
90
—
45
—
30
—
ns
14B
AS, CS, IACK
≈ (and DS Read) Width Asserted
(Fast Termination Cycle)
tSWDW
80
—
40
—
30
—
ns
153
AS, DS, CS Width Negated
tSN
80
—
40
—
30
—
ns
16
CLKOUT High to
AS, DS, R/ W High Impedance
tCHSZ
—
120
—
60
—
40
ns
17
AS, DS, CS Negated to R/W High
tSNRN
30
—
15
—
10
—
ns
18
CLKOUT High to R/
W High
tCHRH
060
030
020
ns
20
CLKOUT High to R/
W Low
tCHRL
060
030
020
ns
219
R/
W High to AS, CS Asserted
tRAAA
30
—
15
—
10
—
ns
22
R/
W Low to DS Asserted (Write)
tRASA
140
—
70
—
47
—
ns
23
CLKOUT High to Data-Out Valid
tCHDO
—60
—30
—20
ns
24
Data-Out Valid to Negating Edge of
AS, CS,
(Fast Termination Write)
tDVASN
30
—
15
—
10
—
ns
25
DS, CS, Negated to Data-Out Invalid (Data-Out
Hold)
tSNDOI
30
—
15
—
10
—
ns
26
Data-Out Valid to
DS Asserted (Write)
tDVSA
30
—
15
—
10
—
ns
27
Data-In Valid to CLKOUT Low (Data Setup)
tDICL
10
—5—5—
ns
27A
Late
BERR, HALT, BKPT Asserted to CLKOUT
Low (Setup Time)
tBELCL
40
—
20
—
10
—
ns
28
AS, DS Negated to DSACK
≈, BERR, HALT
Negated
tSNDN
0
160
0
80
0
50
ns
294
DS, CS Negated to Data-In Invalid (Data-In
Hold)
tSNDI
0
—
0
—
0
—
ns
29A4
DS, CS Negated to Data-In High Impedance
tSHDI
—
120
—
60
—
40
ns
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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