10-10 M68000 8-/16-/32-BIT MICROPROCESSORS USER'S MANUAL MOTOROLA
10.10 AC ELECTRICAL SPECIFICATIONS — READ AND WRITE CYCLES
(V
CC
=5.0 VDC±5+; GND=0 V; T
A
=T
L
to T
H
; (see Figures 10-4 and 10-5) (Applies To All
Processors Except The MC68EC000)
Num Characteristic 8 MHz* 10 MHz* 12.5 MHz*
16.67 MHz
12F
16 MHz 20 MHz
••
Unit
Min Max Min Max Min Max Min Max Min Max Min Max
6 Clock Low to Address Valid — 62 — 50 — 50 — 50 30 — 25 ns
6A Clock High to FC Valid — 62 — 50 — 45 — 45 0 30 0 25 ns
7 Clock High to Address, Data
Bus High Impedance
(Maximum)
— 80 — 70 — 60 — 50 50 — 42 ns
8 Clock High to Address, FC
Invalid (Minimum)
0—0—0—0—0—0—ns
9
1
Clock High to AS, DS
Asserted
360350340340330325ns
11
2
Address Valid to AS, DS
Asserted (Read)/
AS Asserted
(Write)
30 — 20 — 15 — 15 — 15 — 10 — ns
11A
2
FC Valid to AS), DS Asserted
(Read)/AS ) Asserted (Write)
90 — 70 — 60 — 30 — 45 — 40 — ns
12
1
Clock Low to AS, DS Negated — 62 — 50 — 40 — 40 3 30 3 25 ns
13
2
AS, DS Negated to Address,
FC Invalid
40 — 30 — 20 — 10 — 15 — 10 — ns
14
2
ASand DS Read) Width
Asserted
270 — 195 — 160 — 120 — 120 — 100 — ns
14A DS Width Asserted (Write) 140 95 80 60 60 — 50 — ns
15
2
AS, DS Width Negated 150 — 105 — 65 — 60 — 60 — 50 — ns
16 Clock High to Control Bus
High Impedance
—80—70—60—50—50—42ns
17
2
AS, DS Negated to R/W
Invalid
40 — 30 — 20 — 10 — 15 — 10 — ns
18
1
Clock High to R/W High
(Read)
055045040040030025ns
20
1
Clock High to R/W Low
(Write)
055045040040030025ns
20A
2,6
AS Asserted to R/W Valid
(Write)
—10—10—10—10—10—10ns
21
2
Address Valid to R/W Low
(Write)
20—0—0—0—0—0—ns
21A
2
FC Valid to R/W Low (Write) 60 — 50 — 30 — 20 — 30 — 25 — ns
22
2
R/ W Low to DS Asserted
(Write)
80 — 50 — 30 — 20 — 30 — 25 — ns
23 Clock Low to Data-Out Valid
(Write)
— 62 — 50 — 50 — 550 — 30 — 25 ns
25
2
AS, DS) Negated to Data-Out
Invalid (Write)
40
1
0
—30—20—15—15—10— ns
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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