參數(shù)資料
型號: MPC8544DS
廠商: Freescale Semiconductor
文件頁數(shù): 7/117頁
文件大?。?/td> 0K
描述: BOARD DEVELOPMENT SYSTEM 8544
標準包裝: 1
系列: PowerQUICC III™
類型: MPU
適用于相關產(chǎn)品: MPC8544
所含物品:
相關產(chǎn)品: MPC8544EDVTANG-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EDVTALF-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EAVTARJ-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EAVTAQG-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EAVTANG-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544EAVTALF-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544DVTANG-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544DVTALF-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544AVTARJ-ND - IC MPU POWERQUICC III 783-FCBGA
MPC8544AVTAQG-ND - IC MPU POWERQUICC III 783-FCBGA
更多...
MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 6
104
Freescale Semiconductor
Thermal
Figure 64. Approach Air Velocity (m/s)
20.3.4
Temperature Diode
The MPC8544E has a temperature diode on the microprocessor that can be used in conjunction with other
system temperature monitoring devices (such as Analog Devices, ADT7461). These devices use the
negative temperature coefficient of a diode operated at a constant current to determine the temperature of
the microprocessor and its environment. It is recommended that each device be individually calibrated.
The following are voltage forward biased range of the on-board temperature diode:
Vf > 0.40 V
Vf < 0.90 V
An approximate value of the ideality may be obtained by calibrating the device near the expected operating
temperature. The ideality factor is defined as the deviation from the ideal diode equation:
Another useful equation is:
1
3
5
7
8
00.511.522.533.5
Thermalloy #2328B Pin-fin Heat Sink
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at
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Ther
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2
4
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Ifw = Is e
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