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  • 參數(shù)資料
    型號(hào): MPC850SRCVR50BU
    廠商: Freescale Semiconductor
    文件頁數(shù): 71/72頁
    文件大?。?/td> 0K
    描述: IC MPU PWRQUICC 50MHZ 256-PBGA
    標(biāo)準(zhǔn)包裝: 60
    系列: MPC8xx
    處理器類型: 32-位 MPC8xx PowerQUICC
    速度: 50MHz
    電壓: 3.3V
    安裝類型: 表面貼裝
    封裝/外殼: 256-BGA
    供應(yīng)商設(shè)備封裝: 256-PBGA(23x23)
    包裝: 托盤
    MPC850 PowerQUICC Integrated Communications Processor Hardware Specifications, Rev. 2
    8
    Freescale Semiconductor
    Thermal Characteristics
    4
    Thermal Characteristics
    Table 3 shows the thermal characteristics for the MPC850.
    Table 4 provides power dissipation information.
    Table 5 provides the DC electrical characteristics for the MPC850.
    Table 3. Thermal Characteristics
    Characteristic
    Symbol
    Value
    Unit
    Thermal resistance for BGA 1
    1
    For more information on the design of thermal vias on multilayer boards and BGA layout considerations in
    general, refer to AN-1231/D, Plastic Ball Grid Array Application Note available from your local Freescale sales
    office.
    θJA
    40 2
    2 Assumes natural convection and a single layer board (no thermal vias).
    °C/W
    θJA
    31 3
    3
    Assumes natural convection, a multilayer board with thermal vias4, 1 watt MPC850 dissipation, and a board
    temperature rise of 20
    °C above ambient.
    °C/W
    θJA
    24 4
    4 Assumes natural convection, a multilayer board with thermal vias4, 1 watt MPC850 dissipation, and a board
    temperature rise of 13
    °C above ambient.
    TJ = TA + (PD
    θJA)
    PD = (VDD
    IDD) + PI/O
    where:
    PI/O is the power dissipation on pins
    °C/W
    Thermal Resistance for BGA (junction-to-case)
    θJC
    8
    °C/W
    Table 4. Power Dissipation (PD)
    Characteristic
    Frequency (MHz)
    Typical 1
    1
    Typical power dissipation is measured at 3.3V
    Maximum 2
    2
    Maximum power dissipation is measured at 3.65 V
    Unit
    Power Dissipation
    All Revisions
    (1:1) Mode
    33
    TBD
    515
    mW
    40
    TBD
    590
    mW
    50
    TBD
    725
    mW
    Table 5. DC Electrical Specifications
    Characteristic
    Symbol
    Min
    Max
    Unit
    Operating voltage at 40 MHz or less
    VDDH, VDDL,
    KAPWR, VDDSYN
    3.0
    3.6
    V
    Operating voltage at 40 MHz or higher
    VDDH, VDDL,
    KAPWR, VDDSYN
    3.135
    3.465
    V
    Input high voltage (address bus, data bus, EXTAL, EXTCLK,
    and all bus control/status signals)
    VIH
    2.0
    3.6
    V
    Input high voltage (all general purpose I/O and peripheral pins)
    VIH
    2.0
    5.5
    V
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