參數(shù)資料
型號： MPC8270CVRMIBA
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 66.67 MHz, RISC PROCESSOR, PBGA516
封裝： 27 X 27 MM, 1 MM PITCH, LEAD FREE, PLASTIC, FBGA-516
文件頁數(shù)： 46/156頁
文件大?。?/td> 1680K
代理商： MPC8270CVRMIBA
14
MPC8280 PowerQUICC II Family Hardware Specications
MOTOROLA
Power Dissipation
5
Power Dissipation
Table 7 provides preliminary, estimated power dissipation for various congurations. Note that suitable
thermal management is required to ensure the junction temperature does not exceed the maximum specied
value. Also note that the I/O power should be included when determining whether to use a heat sink. For a
complete list of possible clock congurations, refer to Section 7, “Clock Conguration Modes.”
6
AC Electrical Characteristics
The following sections include illustrations and tables of clock diagrams, signals, and CPM outputs and
inputs for 66.67/83.33/100 MHz devices. Note that AC timings are based on a 50-pf load. Typical output
buffer impedances are shown in Table 8.
Table 7. Estimated Power Dissipation for Various Congurations1
1 Test temperature = 105 C
Bus
(MHz)
CPM
Multiplication
Factor
CPM
(MHz)
CPU
Multiplication
Factor
CPU
(MHz)
PINT(W)
2,3
2 P
INT = IDD x VDD Watts
3 Values do not include I/O. Add the following estimates for active I/O based on the following bus speeds:
66.7 MHz = 0.45 W (nominal), 0.5 W (maximum)
83.3 MHz = 0.5W (nominal), 0.6 W (maximum)
100 MHz = 0.6 W (nominal), 0.7 W (maximum)
Vddl 1.5 Volts
Nominal
Maximum
66.67
2.5
166
3.5
233
0.95
1.0
66.67
2.5
166
4
266
1.0
1.05
66.67
3
200
4
266
1.05
1.1
66.67
3.5
233
4.5
300
1.05
1.15
83.33
3
250
4
333
1.25
1.35
83.33
3
250
4.5
375
1.3
1.4
83.33
3.5
292
5
417
1.45
1.55
100
3
300
4
400
1.5
1.6
100
3
300
4.5
450
1.55
1.65
Table 8. Output Buffer Impedances1
1 These are typical values at 65 C. Impedance may vary by ±25% with process and temperature.
Output Buffers
Typical Impedance (
)
60x bus
45 or 272
2 On silicon revision 0.0 (mask #: 0K49M), selectable impedance is not available. Impedance is set at 45 .
On all other revisions, impedance value is selected through the SIUMCR[20,21]. Refer to the MPC8280 Addendum to
the MPC8260 PowerQUICC II Family Reference Manual.
Local bus
45
Memory controller
45 or 272
Parallel I/O
45
PCI
27
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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參數(shù)描述
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MPC8270CVVQLD 制造商:Freescale Semiconductor 功能描述:
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