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参数资料
| 型号： | MPC8255ZUIGAXXX |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 200 MHz, RISC PROCESSOR, PBGA480 |
| 封装： | 37.50 X 37.50 MM, 1.27 MM PITCH, TBGA-480 |
| 文件页数： | 4/40页 |
| 文件大小： | 1069K |
| 代理商： | MPC8255ZUIGAXXX |
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MPC8260 PowerQUICC II Integrated Communications Processor Hardware Specifications, Rev. 1.3
12
Freescale Semiconductor
Electrical and Thermal Characteristics
Table 7 lists CPM output characteristics.
Table 8 lists CPM input characteristics.
Note that 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 6. Output Buffer Impedances 1
1
These are typical values at 65° C. The impedance may vary by
±25% with process and temperature.
Output Buffers
Typical Impedance (
)
60x bus
40
Local bus
40
Memory controller
40
Parallel I/O
46
Table 7. 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
Max Delay (ns) Min Delay (ns)
Max
Min
66 MHz
sp36a
sp37a FCC outputs—internal clock (NMSI)
6
1
sp36b
sp37b FCC outputs—external clock (NMSI)
14
2
sp40
sp41
TDM outputs/SI
25
5
sp38a
sp39a SCC/SMC/SPI/I2C outputs—internal clock (NMSI)
19
1
sp38b
sp39b Ex_SCC/SMC/SPI/I2C outputs—external clock (NMSI)
19
2
sp42
sp43
PIO/TIMER/IDMA outputs
14
1
Table 8. 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
Setup (ns)
Hold (ns)
Setup
Hold
66 MHz
sp16a
sp17a FCC inputs—internal clock (NMSI)
10
0
sp16b
sp17b FCC inputs—external clock (NMSI)
3
sp20
sp21
TDM inputs/SI
15
12
sp18a
sp19a SCC/SMC/SPI/I2C inputs—internal clock (NMSI)
20
0
sp18b
sp19b SCC/SMC/SPI/I2C inputs—external clock (NMSI)
5
sp22
sp23
PIO/TIMER/IDMA inputs
10
3
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