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  • 參數(shù)資料
    型號: PSD813570JIT
    廠商: 意法半導(dǎo)體
    英文描述: Flash In-System Programmable ISP Peripherals For 8-bit MCUs
    中文描述: Flash在系統(tǒng)可編程ISP的外設(shè)的8位微控制器
    文件頁數(shù): 44/110頁
    文件大小: 1737K
    代理商: PSD813570JIT
    PSD813F2, PSD833F2, PSD834F2, PSD853F2, PSD854F2
    44/110
    PSD Interface to a Multiplexed 8-Bit Bus
    Figure
    19
    shows an example of a system using a
    MCU with an 8-bit multiplexed bus and a PSD. The
    ADIO port on the PSD is connected directly to the
    MCU address/data bus. Address Strobe (ALE/AS,
    PD0) latches the address signals internally.
    Latched addresses can be brought out to Port A or
    B. The PSD drives the ADIO data bus only when
    one of its internal resources is accessed and Read
    Strobe (RD, CNTL1) is active. Should the system
    address bus exceed sixteen bits, Ports A, B, C, or
    D may be used as additional address inputs.
    Figure 19. An Example of a Typical 8-bit Multiplexed Bus Interface
    MCU
    WR
    RD
    BHE
    ALE
    RESET
    AD[7:0]
    A[15:8]
    A[15:8]
    (OPTIONAL)
    A[7:0]
    ADIO
    PORT
    PORT
    A
    PORT
    B
    PORT
    C
    WR (CNTRL0)
    RD (CNTRL1)
    BHE (CNTRL2)
    RST
    ALE (PD0)
    PORT D
    (OPTIONAL)
    PSD
    AI02878C
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    相關(guān)代理商/技術(shù)參數(shù)
    參數(shù)描述
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