MC68000 MOTOROLA [Motorola, Inc], MC68000 Datasheet - Page 298

• Manufacturer Part Number: MC68000
• Manufacturer: MOTOROLA [Motorola, Inc]

Electrical Characteristics
6-10
NOTES:
ASYNCHRONOUS
INPUTS (NOTE 1)
1. Timing measurements are referenced to and from a low voltage of 0.8 volt and a high voltage of 2.0 volts,
2. Because of loading variations, R/W may be valid after AS even though both are initiated by the rising edge
3. Each wait state is a full clock cycle inserted between S4 and S5.
HALT / RESET
unless otherwise noted. The voltage swing through this range should start outside and pass through the
of S2 (specification #20A)
range such that the rise or fall is linear between between 0.8 volt and 2.0 volts.
DATA OUT
BERR / BR
LDS-UDS
FC2-FC0
(NOTE 2)
DTACK
A23-A1
CLKO
R/W
AS
CS
174
17
13
Figure 6-3. Write Cycle Timing Diagram
S0
152
15
176
18
S1
8
7
7
32
173
6
11
MC68302 USER’S MANUAL
21
47
20A
55
23
150
S2
9
26
S3
20
56
177
22
S4
175
14
9
S5
32
48
14A
47
47
47
47
S6
172
S7
151
25
12
30
28
53
MOTOROLA