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參數資料
| 型號： | MPC8248CVRB |
| 廠商： | Motorola, Inc. |
| 英文描述： | MPC8272 PowerQUICC II Family Hardware Specifications |
| 中文描述： | MPC8272的PowerQUICC II系列硬件規(guī)格 |
| 文件頁數： | 15/56頁 |
| 文件大?。?/td> | 539K |
| 代理商： | MPC8248CVRB |
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15
MPC8272 PowerQUICC II Family Hardware Specifications
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
AC Electrical Characteristics
Table 10 lists CPM input characteristics.
NOTE
Although the specifications generally reference the rising edge of the
clock, the following AC timing diagrams also apply when the falling edge
is the active edge.
Table 9. AC Characteristics for CPM Outputs
1
1
Output specifications are measured from the 50% level of the rising edge of CLKIN to the 50% level of the signal.
Timings are measured at the pin.
Spec Number
Characteristic
Value (ns)
Max
Min
Maximum Delay
Minimum Delay
66
MHz
83
MHz
100
MHz
66
MHz
83
MHz
100
MHz
sp36a
sp37a
FCC outputs—internal clock (NMSI)
6
5.5
5.5
1
1
1
sp36b
sp37b
FCC outputs—external clock (NMSI)
14
12
12
2
2
2
sp38a
sp39a
SCC/SMC/SPI/I2C outputs—internal clock (NMSI)
19
16
16
1
0.5
0.5
sp38b
sp39b
SCC/SMC/SPI/I2C outputs—external clock (NMSI)
19
16
16
2
2
2
sp40
sp41
TDM outputs/SI
14
12
12
5
3
3
sp42
sp43
TIMER/IDMA outputs
14
11
11
1
0.5
0.5
sp42a
sp43a
PIO outputs
14
11
11
0.5
0.5
0.5
Table 10. AC Characteristics for CPM Inputs
1
1
Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of CLKIN.
Timings are measured at the pin.
Spec Number
Characteristic
Value (ns)
Setup
Hold
Setup
Hold
66
MHz
83
MHz
100
MHz
66
MHz
83
MHz
100
MHz
sp16a
sp17a
FCC inputs—internal clock (NMSI)
10
8
8
0
0
0
sp16b
sp17b
FCC inputs—external clock (NMSI)
3
2.5
2.5
2
2
2
sp18a
sp19a
SCC/SMC/SPI/I2C inputs—internal clock (NMSI)
20
16
16
0
0
0
sp18b
sp19b
SCC/SMC/SPI/I2C inputs—external clock (NMSI)
5
4
4
2
2
2
sp20
sp21
TDM inputs/SI
7
5
5
4
3
3
sp22
sp23
PIO/TIMER/IDMA inputs
10
8
8
0.5
0.5
0.5
F
Freescale Semiconductor, Inc.
n
.
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