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AC ELECTRICAL SPECIFICATIONS (Continued) " {'
Num. Characteristic
17' A'--S, D~ Negated to R/W Invalid
18 Clock High to R/~ High
20 Clock High to R/W Low
21 R/W'High to AT 'Asserted
22 R/W Low to D'--S ,~sserted (Write)
23 Clock High to Data-Out Valid
24 Data-Out Valid to Negating
Edge.of AS ..
2511 AS, DS Negated to Data-Out
Invalid
25A 9'11 D-S Negated to DBEN Negated
(Write)
20MHz 25MHz 33.33MHz 40MHz 50MHz*
Unit
Min ,Max Min Max Min Max Min Max Min Max
1Q --- .7" --~ 5 -- 3 -- 3 -- ns
O 25 0 20 0 15 O 14 0 14 ns
0 25 0 20 O 15 0 !4 O 14 ns
10 -- 7 5 -- 5 -- 3 -- ns
60 -- 47 -- 35 -- 24 .-- 23 -- ns
-- 25 -- 20 -- 14 -- 14 -- 14 ns
8 -- 5 -- 3 -- 3 -- 3' -- ns
10 -- 7 -- 5 -- 3 -- . 3 -- ns
10 -- 7 -- 5 -- 3 -- 3 -- ns
2611 Data-Out Valid to Asse~ting Edge 10 -- 7 -- 5 -- 3 -- 3 -- ns
of DS Asserted (Write)
27 Data-In Valid to Clock Low
(Setup)
27A Late BERR/HALT Asserted to
Clock Low (Setup)
2812 AS, DSNegated to DSACKx,
BERR, HALT, AVE C
Negated (Asynchronous Hold)
;)8A17 Clock Low to DSACKx, BERR,
HALT, AVEC Negated
(Synchronous Hold)
2912 AS, DS Negated, to Data-In
Invalid '(Asynchronous Hold)
29A 12 AS, DS Negated to Data-In
High Impedance
:3012 Clock Low to Da'ta-ln Invalid
(Synchronous Hold)
30A 12 Clock.Low to.Data-In High.
Impedance (Read followed
by Write)
31 ~ . D~ACKx Asserted to Data-In .
Valid (Asynchronous Data.Setup)
31A 3 DSACKx Asserted to DSACKx
. Valid (Skew)
• :32 RESET input Transition Time "
33 CiockLow to B-G Asserted
34 Clock Low to ~ Negated
• .35 BR Assertedto BG Asserted
(RMC Not Asserted)
4 -- 2 -- 1 -- 1 -- 1 -- ns
10 -- 5 -- 3 -- 3 -- 3 -- ns
O 50 0 40 0 30 0 20 0 15 ns
12 85 8 70 6 50 6 40 6 35 ns
0 -- 0 -- 0 -- 0 -- 0 -- ns
-- 50 -- 40 -- 30 -- 25 -- 20 ns
12 -- 8 -- 6 -- 6 -- 6 -- ns
-- 75 -- 60 -- '45. -- 30' -- 25 ns
-- 43 -- 28 -- 20 -- 14 -- 13 ns
-- 10 -- 7 -- 5 -- 3 -- 3 ns
-- 1,5 .~ 1.5 -- .1.5, ~ .1.5 -- 1.5 Clks
0 25 0 20 0 15 0. , 14 "0 14 ns
0 25 O 20 0 15 0 14 0 14 ns
1,5 3,5 1.5 3.5 1.5 3.5 1,5 3.5 1.5 3.5 Clks
MOTOROLA MC68030 Er ECTRIGAL;SPECIEICATIONS 7