參數(shù)資料
型號: MPC8544EAVTALFA
廠商: Freescale Semiconductor
文件頁數(shù): 7/117頁
文件大小: 0K
描述: IC MPU POWERQUICC III 783-FCBGA
標準包裝: 36
系列: MPC85xx
處理器類型: 32-位 MPC85xx PowerQUICC III
速度: 667MHz
電壓: 0.95 V ~ 1.05 V
安裝類型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤
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
Sin
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Ther
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(25
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2
4
6
Ifw = Is e
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