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参数资料
| 型号： | MPC8270ZQUPEX |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 450 MHz, RISC PROCESSOR, PBGA516 |
| 封装： | 27 X 27 MM, 2.25 MM HEIGHT, 1 MM PITCH, PLASTIC, BGA-516 |
| 文件页数： | 7/80页 |
| 文件大小： | 536K |
| 代理商： | MPC8270ZQUPEX |
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MPC8280 PowerQUICC II Family Hardware Specifications, Rev. 1.8
Freescale Semiconductor
15
AC Electrical Characteristics
6.1 CPM AC Characteristics
Table 9 lists CPM output characteristics.
Table 10 lists CPM input characteristics.
NOTE: Rise/Fall Time on CPM Input Pins
The rise/fall time on CPM input pins should not exceed 5 ns. This should be
enforced especially on clock signals. Rise time refers to signal transitions from
10% to 90% of VCC; fall time refers to transitions from 90% to 10% of VCC.
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
0.5
sp36b
sp37b FCC outputs—external clock (NMSI)
8
2
sp38a
sp39a SCC/SMC/SPI/I2C outputs—internal
clock (NMSI)
10
0
sp38b
sp39b SCC/SMC/SPI/I2C outputs—external
clock (NMSI)
888
222
sp40
sp41
TDM outputs/SI
11
2.5
sp42
sp43
TIMER/IDMA outputs
11
0.5
sp42a
sp43a PIO outputs
11
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)
666000
sp16b
sp17b FCC inputs—external clock (NMSI)
2.5
2
sp18a
sp19a SCC/SMC/SPI/I2C inputs—internal clock
(NMSI)
666000
sp18b
sp19b SCC/SMC/SPI/I2C inputs—external clock
(NMSI)
444222
sp20
sp21
TDM inputs/SI
5
2.5
sp22
sp23
PIO/TIMER/IDMA inputs
8
0.5
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