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    參數(shù)資料
    型號： LFECP1E-3F484C
    廠商： Lattice Semiconductor Corporation
    英文描述： LatticeECP/EC Family Data Sheet
    中文描述： LatticeECP / EC的系列數(shù)據(jù)手冊
    文件頁數(shù)： 34/117頁
    文件大小： 557K
    代理商： LFECP1E-3F484C
    2-31
    Architecture
    Lattice Semiconductor
    LatticeECP/EC Family Data Sheet
    Table 2-14. Supported Output Standards
    Hot Socketing
    The LatticeECP/EC devices have been carefully designed to ensure predictable behavior during power-up and
    power-down. Power supplies can be sequenced in any order. During power up and power-down sequences, the
    I/Os remain in tristate until the power supply voltage is high enough to ensure reliable operation. In addition,
    leakage into I/O pins is controlled to within speci
    fi
    ed limits, this allows for easy integration with the rest of the
    system. These capabilities make the LatticeECP/EC ideal for many multiple power supply and hot-swap applica-
    tions.
    Recommended Power Up Sequence
    : As described in the previous paragraph, the supplies can be sequenced
    in any order. However, once internal power good is achieved (determined by VCC, VCCAUX, VCCIO bank 5) the
    part releases I/Os from tri-state and the management of I/Os becomes the designers responsibility. To simplify a
    system design it is therefore recommended that supplies be sequenced VCCIO, VCC, VCCAUX.
    Output Standard
    Drive
    V
    CCIO
    (Nom.)
    Single-ended Interfaces
    LVTTL
    LVCMOS33
    LVCMOS25
    LVCMOS18
    LVCMOS15
    LVCMOS12
    LVCMOS33, Open Drain
    LVCMOS25, Open Drain
    LVCMOS18, Open Drain
    LVCMOS15, Open Drain
    LVCMOS12, Open Drain
    PCI33
    HSTL18 Class I, II, III
    HSTL15 Class I, III
    SSTL3 Class I, II
    SSTL2 Class I, II
    SSTL18 Class I
    Differential Interfaces
    Differential SSTL3, Class I, II
    Differential SSTL2, Class I, II
    Differential SSTL18, Class I
    Differential HSTL18, Class I, II, III
    Differential HSTL15, Class I, III
    LVDS
    BLVDS
    1
    LVPECL
    1
    RSDS
    1
    1. Emulated with external resistors.
    4mA, 8mA, 12mA, 16mA, 20mA
    4mA, 8mA, 12mA 16mA, 20mA
    4mA, 8mA, 12mA, 16mA, 20mA
    4mA, 8mA, 12mA, 16mA
    4mA, 8mA
    2mA, 6mA
    4mA, 8mA, 12mA 16mA, 20mA
    4mA, 8mA, 12mA 16mA, 20mA
    4mA, 8mA, 12mA 16mA
    4mA, 8mA
    2mA, 6mA
    N/A
    N/A
    N/A
    N/A
    N/A
    N/A
    3.3
    3.3
    2.5
    1.8
    1.5
    1.2
    —
    —
    —
    —
    —
    3.3
    1.8
    1.5
    3.3
    2.5
    1.8
    N/A
    N/A
    N/A
    N/A
    N/A
    N/A
    N/A
    N/A
    N/A
    3.3
    2.5
    1.8
    1.8
    1.5
    2.5
    2.5
    3.3
    2.5
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