參數(shù)資料
    型號: LC5256MC-4F256C
    廠商: LATTICE SEMICONDUCTOR CORP
    元件分類: PLD
    英文描述: 3.3V, 2.5V and 1.8V In-System Programmable eXpanded Programmable Logic Device XPLD⑩ Family
    中文描述: EE PLD, 4.8 ns, PBGA256
    封裝: FPBGA-256
    文件頁數(shù): 48/92頁
    文件大小: 378K
    代理商: LC5256MC-4F256C
    Lattice Semiconductor
    ispXPLD 5000MX Family Data Sheet
    48
    Switching Test Conditions
    Figure 21 shows the output test load that is used for AC testing. The speci
    fi
    c values for resistance, capacitance,
    voltage, and other test conditions are shown in Table 14.
    Figure 21. Output Test Load, LVTTL and LVCMOS Standards
    Table 14. Test Fixture Required Components
    Test Condition
    R
    1
    106
    R
    2
    106
    C
    L
    35pF
    Timing Ref.
    V
    CCO
    /2
    LVCMOS3.3 = 1.5V
    LVCMOS2.5 = V
    CCO
    /2
    LVCMOS1.8 = V
    CCO
    /2
    V
    CCO
    /2
    V
    CCO
    /2
    V
    OH
    - 0.15
    V
    OL
    + 0.15
    V
    CCO
    1.8V
    Default LVCMOS 1.8 I/O (L -> H, H -> L)
    LVCMOS I/O (L -> H, H -> L)
    35pF
    LVCMOS3.3 = 3.0V
    LVCMOS2.5 = 2.3V
    LVCMOS1.8 = 1.65V
    1.65V
    1.65V
    1.65V
    1.65V
    Default LVCMOS 1.8 I/O (Z -> H)
    Default LVCMOS 1.8 I/O (Z -> L)
    Default LVCMOS 1.8 I/O (H -> Z)
    Default LVCMOS 1.8 I/O (L -> Z)
    Note: Output test conditions for all other interfaces are determined by the respective standards.
    106
    106
    106
    106
    35pF
    35pF
    5pF
    5pF
    V
    CCO
    R1
    R2
    CL*
    Device
    Output
    *C
    L
    includes test fixture and probe capacitance.
    Test
    Point
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