Ac Electrical Specifications-Read And Write; Figure 8-2. Clock Output Timing - Motorola MC68306 User Manual

1.5 V
0.8 V
EXTAL
4
1A
CLKOUT
NOTE:
8.7 AC ELECTRICAL SPECIFICATIONS—READ AND WRITE
CYCLES
(The electrical specifications in this document are preliminary; see Figures 8-3 and 8-4)
Num
6 CLKOUT Low to Address Valid (Row Address for DRAM Cycle)
6A CLKOUT High to FC Valid
7 CLKOUT High to Data Bus High Impedance (Maximum)
8 CLKOUT High to Address, FC Invalid (Minimum)
1
9 CLKOUT High to AS, LDS, UDS Asserted
9A UDS, LDS Asserted to OE, UW, LW Asserted
2
11 Address Valid to AS, LDS, UDS Asserted (Read)/ AS Asserted
(Write)
2
11A FC Valid to AS, LDS, UDS Asserted (Read)/ AS, Asserted
(Write)
1
12 CLKOUT Low to AS, LDS, UDS Negated
12A UDS, LDS Negated to OE, UW, LW Negated
2
13 AS, LDS, UDS Negated to Address, FC Invalid
2
14 AS (and LDS, UDS Read) Width Asserted
2
14A LDS, UDS, Width Asserted (Write)
2
15 AS, LDS, UDS Width Negated
16 CLKOUT High to Control Bus High Impedance
2
17 AS, LDS, UDS Negated to R/W Invalid
1
18 CLKOUT High to R/W High (Read)
1
20 CLKOUT High to R/W Low (Write)
MOTOROLA
3.8 V
1.5 V
Timing measurements are referenced to and from a low voltage of 0.8 V and a high
voltage of 3.8 V, unless otherwise noted. The voltage swing through this range
should start outside and pass through the range such that the rise or fall will be linear
between 0.8 V and 3.8 V.

Figure 8-2. Clock Output Timing

Characteristic
MC68306 USER'S MANUAL
1
3
2
5
1
2A
1.5 V
1.5 V
16.67 MHz
Min Max
— 30
— 30
— 50
0 —
3 30
0 15
15 —
45 —
3 30
0 15
15 —
120 —
50 —
60 —
— 50
15 —
0 30
0 30
3.8 V
1.5 V
0.8 V
1A
3A
1.5 V
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
8- 5