MC68EC000 Motorola, MC68EC000 Datasheet - Page 133

• Manufacturer Part Number: MC68EC000
• Description: Core Processor (SCM 68000)
• Manufacturer: Motorola

Electrical Characteristics
7-4
ASYNCHRONOUS
HALTIB/RESETIB
DSB/LDSB/UDSB
NOTES:
3. Timing measurements are referenced to and from a low voltage of 0.2 V
2. BRB need fall at this time only to ensure being recognized at the end of the bus cycle.
1. Setup time for the asynchronous inputs IPLB2–IPLB0 (spec #47) guarantees their recognition at the
BERRB/BRB
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 0.2 V
next falling edge of the clock.
FC2–FC0
(NOTE 1)
DTACKB
(NOTE 2)
DATA IN
INPUTS
A31–A0
CLKI
RWB
ASB
17
Figure 7-2. Read Cycle Timing Diagram
Freescale Semiconductor, Inc.
S0
EC000 CORE PROCESSOR USER’S MANUAL
For More Information On This Product,
15
18
13
S1
8
6A
32
11A
11
6
47
Go to: www.freescale.com
S2
S3
48
56
9
S4
DD
47
and 0.8 V
14
S5
32
31
27
47
47
47
DD
S6
.
DD
and a high voltage of 0.8 V
S7
12
30
28
29
29A
DD
MOTOROLA
,
28A