參數(shù)資料
型號(hào): MC68SEC000
廠商: Motorola, Inc.
英文描述: Addendum to M68000 User Manual
中文描述: 增編M68000用戶手冊(cè)
文件頁(yè)數(shù): 14/26頁(yè)
文件大小: 249K
代理商: MC68SEC000
14
M68000 USER’S MANUAL ADDENDUM
MOTOROLA
Figure 9. MC68SEC000 Read Cycle Timing Diagram
6A
8
6
13
14
12
17
18
47
28
29
27
48
47
30
47
32
56
47
32
S0
S1
S2
S3
S4
S5
S6
CLK
FC2–FC0
A23–A0
AS
LDS / UDS
R/W
DTACK
DATA IN
BERR / BR
(NOTE 2)
HALT / RESET
47
ASYNCHRONOUS
INPUTS
(NOTE 1)
S7
31
7
11
11A
NOTES:
1. Setup time for the asynchronous inputs IPL2–IPL0 and AVEC (#47) guarantees their recognition at the
next falling edge of the clock.
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 V and a high voltage of 2.0 V,
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 V and 2.0 V.
9
15
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