參數(shù)資料
型號(hào): MC68EC030
廠商: Motorola, Inc.
英文描述: Second-Generation 32-Bit Enhanced Embedded Controller
中文描述: 第二代32位增強(qiáng)型嵌入式控制器
文件頁(yè)數(shù): 26/36頁(yè)
文件大?。?/td> 392K
代理商: MC68EC030
26
MC68EC030 TECHNICAL DATA
Go to: www.freescale.com
MOTOROLA
AC ELECTRICAL SPECIFICATIONS — READ AND WRITE CYCLES
(Concluded)
Num.
Characterstics
25 MHz
40 MHz
Unit
Min
Max
Min
Max
44
R/
W
Low to
DBEN
Asserted (Write)
7
5
ns
45
5
DBEN
Width Asserted
Asynchronous Read
Asynchronous Write
40
80
22
45
ns
45A
9
DBEN
Width Asserted
Synchronous Read
Synchronous Write
5
40
5
22
ns
46
R/
W
Width Asserted (Asynchronous Write or Read)
100
50
ns
46A
R/
W
Width Asserted (Synchronous Write or Read)
60
30
ns
47A
Asynchronous Input Setup Time to Clock Low
2
2
ns
47B
48
4
Asynchronous Input Hold Time from Clock Low
8
6
ns
DSACKx
Asserted to
BERR
,
HALT
Asserted
25
14
ns
53
Data-Out Hold from Clock High
3
2
ns
55
R/
W
Asserted to Data Bus Impedance Change
20
11
ns
56
RESET
Pulse Width (Reset Instruction)
512
512
Clks
57
58
10
59
10
60
13
61
13
BERR
Negated to
HALT
Negated (Rerun)
0
0
ns
BGAC
K Negated to Bus Driven
1
1
Clks
BG
Negated to Bus Driven
1
1
Clks
Synchronous Input Valid to Clock High (Setup Time)
2
2
ns
Clock High to Synchronous Input Invalid (Hold Time)
8
6
ns
62
Clock Low to
STATUS
,
REFIL
L Asserted
0
20
0
15
ns
63
Clock Low to
STATUS
,
REFILL
Negated
0
20
0
15
ns
F
Freescale Semiconductor, Inc.
n
.
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