Motorola MC68EC000, Руководство пользователя

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12 M68000 USER’S MANUAL ADDENDUM MOTOROLA
7.0 MC68SEC000 AC ELECTRICAL SPECIFICATIONS — READ AND
WRITE CYCLES
Add the following table and Figures 9 and 10 to Section 10.16.
Applies to 3.3V and 5V.
(GND = 0 V; T
A
= T
L
to T
H
; see Figures 3 and 4)
NUM CHARACTERISTIC
10MHz 16MHz 20MHz
UNIT
MIN MAX MIN MAX MIN MAX
6 Clock Low to Address Valid — 35 — 30 — 25 ns
6A Clock High to FC Valid 0 35 0 30 0 25 ns
7 Clock High to Address, Data Bus High Impedance (Maximum)
(Write)
— 55 — 50 — 42 ns
8 Clock High to Address, FC Invalid (Minimum) 0 — 0 — 0 — ns
9
1 Clock High to AS, LDS, UDS Asserted 3 35 3 30 3 25 ns
11
2 Address Valid to AS, LDS, UDS Asserted (Read)/ AS Asserted
(Write)
20 — 15 — 10 — ns
11A
2
FC Valid to AS, LDS, UDS Asserted (Read)/ AS Asserted (Write) 45 — 45 — 40 — ns
12
1 Clock Low to AS, LDS, UDS Negated 3 35 3 30 3 25 ns
13
2 AS, LDS, UDS Negated to Address, FC Invalid 15 — 15 — 10 — ns
14
2 AS (and LDS, UDS Read) Width Asserted 195 — 120 — 100 — ns
14A
2 LDS, UDS Width Asserted (Write) 95 — 60 — 50 — ns
15
2 AS, LDS, UDS Width Negated 105 — 60 — 50 — ns
16 Clock High to Control Bus High Impedance — 55 — 50 — 42 ns
17
2 AS, LDS, UDS Negated to R/W Invalid 15 — 15 — 10 — ns
18
1 Clock High to R/W High (Read) 0 35 0 30 0 25 ns
20
1 Clock High to R/W Low (Write) 0 35 0 30 0 25 ns
20A
2,6 AS Asserted to R/W Low (Write) — 10 — 10 — 10 ns
21
2 Address Valid to R/W Low (Write) 0 — 0 — 0 — ns
21A
2 FC Valid to R/W Low (Write) 50 — 30 — 25 — ns
22
2 R/W Low to DS Asserted (Write) 50 — 30 — 25 — ns
23 Clock Low to Data-Out Valid (Write) — 35 — 30 — 25 ns
25
2 AS, LDS, UDS Negated to Data-Out Invalid (Write) 30 — 15 — 10 — ns
26
2 Data-Out Valid to LDS, UDS Asserted (Write) 30 — 15 — 10 — ns
27
5 Data-In Valid to Clock Low (Setup Time on Read) 5 — 5 — 5 — ns
28
2 AS, LDS, UDS Negated to DTACK Negated (Asynchronous Hold) 0 110 0 110 0 95 ns
28A Clock High to DTACK Negated 0 110 0 110 0 95 ns
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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