MC68040RC25A Datasheet, PDF (370/442 Pages) Motorola, Inc – Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.
MC68LC040 REV2.3 (01/29/2000)
A.6.6 A.6.7 Output AC Timing Specifications (see Figures A-5^* to A-9)
Num
Characteristic
20 MHz
Min Max
25 MHz
Min Max
33 MHz
Min Max
40 MHz
Unit
Min Max
11 BCLK to Address, CIOUT, LOCK,
LOCKE, PSTx, R/W, SIZx,
TLNx,TMx, TTx, UPAx
11.5 35
9
30
6.5
25 ^{5.25 24}
nS
Valid
12 BCLK to Output Invalid (Output
Hold)
11.5 —
9
—
6.5
— 5.25 —
nS
13 BCLK to TS Valid
11.5 35
9
30
6.5
25 5.25 24
nS
14 BCLK to TIP Valid
11.5 35
9
30
6.5
25 5.25 24
nS
18 BCLK to Data-Out Valid
11.5 37
9
32
6.5
27 5.25 26
nS
19 BCLK to Data-Out Invalid (Output
Hold)
11.5
—
9
—
6.5
— 5.25 —
nS
20 BCLK to Output Low Impedance 11.5 —
9
—
6.5
— 5.25 —
nS
21 BCLK to Data-Out High
Impedance
11.5 25
9
20
6.5
17 5.25 16
nS
38 BCLK to Address, CIOUT, LOCK,
LOCKE, R/W, SIZx, TS, TLNx,
TMx, TTx, UPAx High
11.5
23
9
18
6.5
15 5.25 14
nS
Impedance
39 BCLK to BB, TA, TIP High
Impedance
23
33
19
28
14
25 11.5 22 nS
40 BCLK to BR, BB Valid
11.5 35
9
30
6.5
23 5.25 14
nS
43 BCLK to MI Valid
11.5 35
9
30
6.5
25 5.25 24
nS
48 BCLK to TA Valid
11.5 35
9
30
6.5
25 5.25 24
nS
50 BCLK to IPEND, PSTx, RSTO
Valid
11.5 35
9
30
6.5
25 5.25 24
nS
*Output timing is specified for a valid signal measured at the pin. Timing is specified driving an unterminated 30-Ω
transmission line with a length characterized by a 2.5-nS one-way propagation delay. Buffer output impedance is
typically 30 Ω; the buffer specifications include approximately 5 nS for the signal to propagate the length of the
transmission line and back.
A-10
M68040 USER’S MANUAL
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