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    參數(shù)資料
    型號: MPC8544EVTANGB
    廠商: FREESCALE SEMICONDUCTOR INC
    元件分類: 微控制器/微處理器
    英文描述: 32-BIT, 800 MHz, RISC PROCESSOR, PBGA783
    封裝: 29 X 29 MM, 1 MM PITCH, LEAD FREE, PLASTIC, BGA-783
    文件頁數(shù): 9/120頁
    文件大?。?/td> 1321K
    代理商: MPC8544EVTANGB
    MPC8544E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 2
    106
    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. For proper operation, the monitoring device used should
    auto-calibrate the device by canceling out the VBE variation of each MPC8544E internal diode.
    The following are the specifications of the MPC8544E on-board temperature diode:
    Vf > 0.40 V
    Vf < 0.90 V
    Operating range 2–300
    μA
    Diode leakage < 10 nA at 125
    ° C
    Ideality factor over 5–150
    μA at 60° C: n = 1.085 ± 0.2%
    Ideality factor is defined as the deviation from the ideal diode equation:
    1
    3
    5
    7
    8
    0
    0.511.5
    22.5
    33.5
    Thermalloy #2328B Pin-fin Heat Sink
    Heat
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    (25
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    2
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