• 參數(shù)資料
    型號(hào): ST16C452IJ68PS-F
    廠商: Exar Corporation
    文件頁數(shù): 13/30頁
    文件大小: 0K
    描述: IC UART W/PAR PORT DUAL 68PLCC
    標(biāo)準(zhǔn)包裝: 19
    特點(diǎn): *
    通道數(shù): 2,DUART
    FIFO's: 1 字節(jié)
    規(guī)程: 打印機(jī)
    電源電壓: 2.97 V ~ 5.5 V
    帶并行端口:
    帶故障啟動(dòng)位檢測(cè)功能:
    帶調(diào)制解調(diào)器控制功能:
    帶CMOS:
    安裝類型: 表面貼裝
    封裝/外殼: 68-LCC(J 形引線)
    供應(yīng)商設(shè)備封裝: 68-PLCC
    包裝: 管件
    20
    ST16C452/452PS
    Rev. 3.20
    a logic 1 first.
    Logic 0 = -AutoFDXT pin is a logic 1. (normal default
    condition)
    1= -AutoFDXT pin is a logic 0.
    COM BIT-2:
    INIT is a bi-directional signal with an open source
    driver and internal pull-up so that it may be wire-or’d
    with other outputs. COM bit-2 is used to read status
    while CON bit 2 is used to set an output state. If it is to
    function as an input, CON bit-1 shall be set to a logic
    1 first.
    Logic 0 = INIT pin is a logic 0. (normal default
    condition)
    Logic 1 = INIT pin is a logic 1.
    COM BIT-3:
    -SLCTIN is a bi-directional signal with an open source
    driver and internal pull-up so that it may be wire-or’d
    with other outputs. COM bit-1 is used to read status
    while CON bit 1 is used to set an output state. If it is to
    function as an input, CON bit-1 shall be set to a logic
    1 first.
    Logic 0 = -SLCTIN pin is a logic 1 (normal default
    condition)
    Logic 1 = -SLCTIN pin is a logic 0
    COM BIT-4:
    This bit allows the state of -INTP to be read back by the
    external CPU.
    Logic 0 = Interrupt (-INTP output) is disabled (normal
    default condition)
    Logic 1 = Interrupt (-INTP output) is enabled
    COM BIT 5-7:
    Not Used - initialized to a logic 1.
    Control Register (CON)
    This register provides control of the printer port output
    logical states and controls the printer interrupts INIT
    and -INTP. With the exception of PD 0-7 IN/OUT, the
    status of this register may be read by reading the COM
    register.
    CON BIT-0:
    The -STROBE output control bit is under software
    control, i.e., the hardware will not generate a strobe. It
    is up to software to return the state of -STROBE to the
    inactive (logic 1) state. The hardware driver is open
    drain so that -STROBE may be wire-or’d. The state of
    this bit can be read using COM bit-0.
    Logic 0 = -STROBE output is set to a logic 1. (normal
    default condition)
    Logic 1 = -STROBE output is set to a logic 0.
    CON BIT-1:
    The -AutoFDXT output control bit is set by software
    using CON bit-1. The hardware driver is open drain so
    that -AutoFDXT may be wire-or’d. The state of this bit
    can be read using COM bit-1.
    Logic 0 = -AutoFDXT output is set to a logic 1. (normal
    default condition)
    Logic 1 = -AutoFDXT output is set to a logic 0.
    CON BIT-2:
    The INIT output control bit is set by software using
    CON bit-2. The hardware driver is open drain so that
    INIT may be wire-or’d. The state of this bit can be read
    using COM bit-2.
    Logic 0 = INIT output is set to a logic 0. (normal default
    condition)
    Logic 1 = INIT output is set to a logic 1.
    CON BIT-3:
    The -SLCTIN output control bit is set by software using
    CON bit-3. The hardware driver is open drain so that
    -AutoFDXT may be wire-or’d. The state of this bit can
    be read using COM bit-3.
    Logic 0 = -SLCTIN output is set to a logic 1. (normal
    default condition)
    Logic 1 = -SLCTIN output is set to a logic 0.
    CON BIT-4:
    This bit enables or masks the printer interrupt output
    -INTP. The state of this bit can be read using COM bit-
    4.
    Logic 0 = Disable -INTP output. (normal default con-
    dition)
    Logic 1 = Enable -INTP output.
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