mc68ec040v Freescale Semiconductor, Inc, mc68ec040v Datasheet - Page 390

• Manufacturer Part Number: mc68ec040v
• Description: M68040 User Manual
• Manufacturer: Freescale Semiconductor, Inc

B.7.6 Output AC Timing Specifications
*Output timing is specified for a valid signal measured at the pin. Timing is specified driving an unterminated 30-
B-14
MC68EC040
Num
transmission line with a length characterized by a 2.5-nS one-way propagation delay. Buffer output impedance is
typically 30 ; the buffer specifications include approximately 5 nS for the signal to propagate the length of the
transmission line and back.
11
12
13
14
18
19
20
21
38
39
40
43
48
50
BCLK to Address CIOUT, LOCK,
BCLK to Output Invalid (Output
BCLK to TS Valid
BCLK to TIP Valid
BCLK to Data-Out Valid
BCLK to Data-Out Invalid (Output
BCLK to Output Low Impedance
BCLK to Data-Out High Imped-
BCLK to Address, CIOUT, LOCK,
BCLK to BB, TA, TIP High Imped-
BCLK to BR, BB Valid
BCLK to MI Valid
BCLK to TA Valid
BCLK to IPEND, PSTx, RSTO
LOCKE,
R/W, SIZx, TLNx,TMx, TTx,
UPAx Valid
Hold)
Hold)
ance
LOCKE,
R/W, SIZx, TS, TLNx, TMx,
TTx, UPAx High
Impedance
ance
Valid
REV2.3 (01/31/2000)
Characteristic
Freescale Semiconductor, Inc.
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M68040 USER’S MANUAL
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
11.5
Min
23
20 MHz
Max
35
35
35
37
25
23
33
35
35
35
35
—
—
—
Min
19
9
9
9
9
9
9
9
9
9
9
9
9
9
25 MHz
(see Figures B-8
Max
30
30
30
32
20
18
28
30
30
30
30
—
—
—
Min
*
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
14
to B-12)
33 MHz
Max
25
—
25
25
27
—
—
17
15
25
23
25
25
25
5.25
5.25
5.25
5.25
5.25
5.25
5.25
5.25
5.25
11.5
5.25
5.25
5.25
5.25
Min
40 MHz
MOTOROLA
Max
24
24
24
26
16
14
22
14
24
24
24
—
—
—
Unit
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS