MC68000 MOTOROLA [Motorola, Inc], MC68000 Datasheet - Page 297

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

MOTOROLA
ASYNCHRONOUS
NOTES:
INPUTS (NOTE 1)
1. Setup time for the asynchronous inputs IPL2–IPL0 guarantees their recognition at the next falling edge of
2. BR need fall at this time only to insure being recognized at the end of the bus cycle.
3. Timing measurements are referenced to and from a low voltage of 0.8 volt and a high voltage of 2.0 volts,
HALT / RESET
the clock.
unless otherwise noted. The voltage swing through this range should start outside and pass through the
range such that the rise or fall is linear between 0.8 volts and 2.0 volts.
BERR / BR
LDS–UDS
(NOTE 2)
FC2–FC0
DATA IN
DTACK
A23–A1
CLKO
R/W
AS
CS
174
13
Figure 6-2. Read Cycle Timing Diagram
S0
152
15
17
18
S1
8
7
9
32
173
6
11
176
MC68302 USER’S MANUAL
47
S2
150
S3
48
56
S4
175
14
S5
32
31
47
47
47
47
27
S6
S7
171
151
12
30
Electrical Characteristics
28
29
178
6-9