<input id="maras"></input>
  • 參數(shù)資料
    型號(hào): PSD835F1-C-90U
    廠商: 意法半導(dǎo)體
    英文描述: Configurable Memory System on a Chip for 8-Bit Microcontrollers
    中文描述: 在8片位微控制器可配置存儲(chǔ)系統(tǒng)
    文件頁數(shù): 9/110頁
    文件大?。?/td> 570K
    代理商: PSD835F1-C-90U
    PSD8XX Family
    PSD835G2
    8
    The following table describes the pin names and pin functions of the PSD835G2. Pins that
    have multiple names and/or functions are defined using PSDsoft.
    6.0
    Table 5.
    PSD835G2
    Pin
    Descriptions
    Pin*
    (TQFP
    Pkg.)
    Pin Name
    Type
    Description
    ADIO0-7
    3-7
    10-12
    I/O
    This is the lower Address/Data port. Connect your MCU
    address or address/data bus according to the following rules:
    1. If your MCU has a multiplexed address/data bus where the
    data is multiplexed with the lower address bits, connect
    AD[0:7] to this port.
    2. If your MCU does not have a multiplexed address/data bus,
    connect A[0:7] to this port.
    3. If you are using an 80C51XA in burst mode, connect
    A4/D0 through A11/D7 to this port.
    ALE or AS latches the address. The PSD drives data out only
    if the read signal is active and one of the PSD functional blocks
    was selected. The addresses on this port are passed to the
    PLDs.
    ADIO8-15
    13-20
    I/O
    This is the upper Address/Data port. Connect your MCU
    address or address/data bus according to the following rules:
    1. If your MCU has a multiplexed address/data bus where the
    data is multiplexed with the lower address bits, connect
    A[8:15] to this port.
    2. If your MCU does not have a multiplexed address/data bus,
    connect A[8:15] to this port.
    3. If you are using an 80C251 in page mode, connect AD[8:15]
    to this port
    4. If you are using an 80C51XA in burst mode, connect
    A[12:19] to this port.
    ALE or AS latches the address. The PSD drives data out only
    if the read signal is active and one of the PSD functional
    blocks was selected. The addresses on this port are passed
    to the PLDs.
    CNTL0
    59
    I
    The following control signals can be connected to this port,
    based on your MCU:
    1. WR — active-low write input.
    2. R_W — active-high read/active low write input.
    This pin is connected to the PLDs. Therefore, these signals can
    be used in decode and other logic equations.
    CNTL1
    60
    I
    The following control signals can be connected to this port,
    based on your MCU:
    1. RD — active-low read input.
    2. E — E clock input.
    3. DS — active-low data strobe input.
    4. PSEN — connect PSEN to this port when it is being used as
    an active-low read signal. For example, when the 80C251
    outputs more than 16 address bits, PSEN is actually the read
    signal.
    This pin is connected to the PLDs. Therefore, these signals can
    be used in decode and other logic equations.
    CNTL2
    40
    I
    This pin can be used to input the PSEN (Program Select
    Enable) signal from any MCU that uses this signal for code
    exclusively. If your MCU does not output a Program Select
    Enable signal, this port can be used as a generic input. This
    port is connected to the PLD as input.
    Active low input. Resets I/O Ports, PLD Micro
    Cells, some of
    the configuration registers and JTAG registers. Must be active
    at power up. Reset also aborts the Flash programming/erase
    cycle that is in progress.
    Reset
    39
    I
    相關(guān)PDF資料
    PDF描述
    PSD835F1V-20UI Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1V-70B81 Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1V-70B81I Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1V-70J Configurable Memory System on a Chip for 8-Bit Microcontrollers
    PSD835F1V-70JI Configurable Memory System on a Chip for 8-Bit Microcontrollers
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