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參數資料
| 型號： | XPC855TZP80 |
| 英文描述： | Controller Miscellaneous - Datasheet Reference |
| 中文描述： | 控制器雜項-數據表參考 |
| 文件頁數： | 18/76頁 |
| 文件大?。?/td> | 825K |
| 代理商： | XPC855TZP80 |
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18
MPC850 (Rev. A/B/C) Hardware Specifications
MOTOROLA
Layout Practices
B34
A[6–31] and D[0–31] to CS valid
- as requested by control bit
CST4 in the corresponding word
in the UPM
3.00
—
6.00
—
4.00
—
0.250
50.00
ns
B34a
A[6–31] and D[0–31] to CS valid
- as requested by control bit
CST1 in the corresponding word
in the UPM
8.00
—
13.00
—
11.00
—
0.500
50.00
ns
B34b
A[6–31] and D[0–31] to CS valid
- as requested by CST2 in the
corresponding word in UPM
13.00
—
21.00
—
17.00
—
0.750
50.00
ns
B35
A[6–31] to CS valid - as
requested by control bit BST4 in
the corresponding word in UPM
3.00
—
6.00
—
4.00
—
0.250
50.00
ns
B35a
A[6–31] and D[0–31] to BS valid
- as requested by BST1 in the
corresponding word in the UPM
8.00
—
13.00
—
11.00
—
0.500
50.00
ns
B35b
A[6–31] and D[0–31] to BS valid
- as requested by control bit
BST2 in the corresponding word
in the UPM
13.00
—
21.00
—
17.00
—
0.750
50.00
ns
B36
A[6–31] and D[0–31] to GPL
valid - as requested by control
bit GxT4 in the corresponding
word in the UPM
3.00
—
6.00
—
4.00
—
0.250
50.00
ns
B37
UPWAIT valid to CLKOUT falling
edge
10
6.00
—
6.00
—
6.00
—
—
50.00
ns
B38
CLKOUT falling edge to
UPWAIT valid
10
1.00
—
1.00
—
1.00
—
—
50.00
ns
B39
AS valid to CLKOUT rising edge
11
7.00
—
7.00
—
7.00
—
—
50.00
ns
B40
A[6–31], TSIZ[0–1], RD/WR,
BURST, valid to CLKOUT rising
edge.
7.00
—
7.00
—
7.00
—
—
50.00
ns
B41
TS valid to CLKOUT rising edge
(setup time)
7.00
—
7.00
—
7.00
—
—
50.00
ns
B42
CLKOUT rising edge to TS valid
(hold time)
2.00
—
2.00
—
2.00
—
—
50.00
ns
B43
AS negation to memory
controller signals negation
—
TBD
—
TBD
TBD
—
—
50.00
ns
Table 6-6. Bus Operation Timing
1
(continued)
Num
Characteristic
50 MHz
66 MHz
80 MHz
FFACT
Cap Load
(default
50 pF)
Unit
Min
Max
Min
Max
Min
Max
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