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    參數(shù)資料
    型號(hào): XR16M554DIV64-F
    廠商: Exar Corporation
    文件頁數(shù): 43/46頁
    文件大小: 0K
    描述: IC UART FIFO 16B QUAD 64LQFP
    標(biāo)準(zhǔn)包裝: 160
    特點(diǎn): *
    通道數(shù): 4,QUART
    FIFO's: 16 字節(jié)
    規(guī)程: RS232
    電源電壓: 1.62 V ~ 3.63 V
    帶自動(dòng)流量控制功能:
    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: 64-LQFP
    供應(yīng)商設(shè)備封裝: 64-LQFP(10x10)
    包裝: 托盤
    XR16M554/554D
    6
    1.62V TO 3.63V QUAD UART WITH 16-BYTE FIFO
    REV. 1.0.0
    INTSEL
    38
    -
    65
    6
    I
    Interrupt Select (active high, input with internal pull-
    down).
    When 16/68# pin is HIGH for Intel bus interface, this pin
    can be used in conjunction with MCR bit-3 to enable or
    disable the INT A-D pins or override MCR bit-3 and
    enable the interrupt outputs. Interrupt outputs are
    enabled continuously when this pin is HIGH. MCR bit-3
    enables and disables the interrupt output pins. In this
    mode, MCR bit-3 is set to a logic 1 to enable the contin-
    uous output. See MCR bit-3 description for full detail.
    This pin must be LOW in the Motorola bus interface
    mode. For the 64 pin packages, this pin is bonded to
    VCC internally in the XR16M554D so the INT outputs
    operate in the continuous interrupt mode. This pin is
    bonded to GND internally in the XR16M554 and there-
    fore requires setting MCR bit-3 for enabling the inter-
    rupt output pins.
    MODEM OR SERIAL I/O INTERFACE
    TXA
    TXB
    TXC
    TXD
    6
    8
    28
    30
    8
    10
    39
    41
    17
    19
    51
    53
    29
    32
    69
    72
    O
    UART channels A-D Transmit Data and infrared trans-
    mit data. In this mode, the TX signal will be HIGH dur-
    ing reset, or idle (no data).
    RXA
    RXB
    RXC
    RXD
    48
    13
    22
    36
    62
    20
    29
    51
    7
    29
    41
    63
    17
    44
    57
    4
    I
    UART channel A-D Receive Data. Normal receive data
    input must idle HIGH.
    RTSA#
    RTSB#
    RTSC#
    RTSD#
    3
    11
    25
    33
    5
    13
    36
    44
    14
    22
    48
    56
    26
    35
    66
    75
    O
    UART channels A-D Request-to-Send (active low) or
    general purpose output. If these outputs are not used,
    leave them unconnected.
    CTSA#
    CTSB#
    CTSC#
    CTSD#
    1
    12
    23
    35
    2
    16
    33
    47
    11
    25
    45
    59
    23
    38
    63
    78
    I
    UART channels A-D Clear-to-Send (active low) or gen-
    eral purpose input. These inputs should be connected
    to VCC when not used.
    DTRA#
    DTRB#
    DTRC#
    DTRD#
    -
    3
    15
    34
    46
    12
    24
    46
    58
    24
    37
    64
    77
    O
    UART channels A-D Data-Terminal-Ready (active low)
    or general purpose output. If these outputs are not
    used, leave them unconnected.
    DSRA#
    DSRB#
    DSRC#
    DSRD#
    -
    1
    17
    32
    48
    10
    26
    44
    60
    22
    39
    62
    79
    I
    UART channels A-D Data-Set-Ready (active low) or
    general purpose input. This input should be connected
    to VCC when not used. This input has no effect on the
    UART.
    Pin Description
    NAME
    48-QFN
    PIN #
    64-LQFP
    PIN #
    68-PLCC
    PIN#
    80-LQFP
    PIN #
    TYPE
    DESCRIPTION
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