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  1. 參數(shù)資料
    型號: W77E516F-25
    廠商: WINBOND ELECTRONICS CORP
    元件分類: 微控制器/微處理器
    英文描述: 8-BIT MICROCONTROLLER
    中文描述: 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
    封裝: QFP-44
    文件頁數(shù): 18/85頁
    文件大小: 596K
    代理商: W77E516F-25
    Preliminary W77E516
    - 18 -
    BIT NAME
    FUNCTION
    P4xM1, P4xM0 Port 4 alternate modes.
    = 00: Mode 0. P4.x is a general purpose I/O port which is the same as Port 1.
    = 01: Mode 1. P4.x is a Read Strobe signal for chip select purpose. The
    address range depends on the SFR P4xAH, P4xAL and bits P4xC1, P4xC0.
    = 10: Mode 2. P4.x is a Write Strobe signal for chip select purpose. The
    address range depends on the SFR P4xAH, P4xAL and bits P4xC1, P4xC0.
    = 11: Mode 3. P4.x is a Read/Write Strobe signal for chip select purpose.
    The address range depends on the SFR P4xAH, P4xAL and bits P4xC1,
    P4xC0
    P4xC1, P4xC0 Port 4 Chip-select Mode address comparison:
    = 00: Compare the full address (16 bits length) with the base address registers
    P4xAH and P4xAL.
    = 01: Compare the 15 high bits (A15
    A1) of address bus with the base
    address registers P4xAH and P4xAL.
    = 10: Compare the 14 high bits (A15
    A2) of address bus with the base
    address registers P4xAH and P4xAL.
    = 11: Compare the 8 high bits (A15
    A8) of address bus with the base
    address registers P4xAH and P4xAL.
    P4.0 Base Address Low Byte Register
    Bit:
    7
    6
    5
    4
    3
    2
    1
    0
    A7
    A6
    A5
    A4
    A3
    A2
    A1
    A0
    Mnemonic: P40AL
    Address: 94h
    P4.0 Base Address High Byte Register
    Bit:
    7
    6
    5
    4
    3
    2
    1
    0
    A15
    A14
    A13
    A12
    A11
    A10
    A9
    A8
    Mnemonic: P40AH
    Address: 95h
    P4.1 Base Address Low Byte Register
    Bit:
    7
    6
    5
    4
    3
    2
    1
    0
    A7
    A6
    A5
    A4
    A3
    A2
    A1
    A0
    Mnemonic: P41AL
    Address: 96h
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    相關代理商/技術參數(shù)
    參數(shù)描述
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