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    參數(shù)資料
    型號: EP7312-CV-90
    廠商: CIRRUS LOGIC INC
    元件分類: 微控制器/微處理器
    英文描述: HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE
    中文描述: 32-BIT, FLASH, 90 MHz, RISC MICROCONTROLLER, PQFP208
    封裝: LQFP-208
    文件頁數(shù): 50/64頁
    文件大?。?/td> 1710K
    代理商: EP7312-CV-90
    50
    Copyright Cirrus Logic, Inc. 2003
    (All Rights Reserved)
    DS508PP5
    EP7312
    High-Performance, Low-Power System on Chip
    C14
    VSSIO
    Pad ground
    I/O ground
    C15
    nPOR
    Schmitt
    I
    Power-on reset input
    C16
    nEXTPWR
    I
    External power supply sense input
    D1
    WRITE/nSDRAS
    1
    Low
    O
    Transfer direction / SDRAM RAS signal output
    D2
    EXPRDY
    1
    I
    Expansion port ready input
    D3
    VSSIO
    Pad ground
    I/O ground
    D4
    VDDIO
    Pad power
    Digital I/O power, 3.3V
    D5
    nCS[2]
    1
    High
    O
    Chip select 2
    D6
    nMWE/nSDWE
    1
    High
    O
    ROM, expansion write enable/ SDRAM write enable control signal
    D7
    nSDCS[0]
    1
    High
    O
    SDRAM chip select 2
    D8
    CL[2]
    1
    Low
    O
    LCD pixel clock out
    D9
    VSSRTC
    Core ground
    Real time clock ground
    D10
    D[4]
    1
    Low
    I/O
    Data I/O
    D11
    nPWRFL
    I
    Power fail sense input
    D12
    MOSCIN
    I
    Main oscillator input
    D13
    VDDIO
    Pad power
    Digital I/O power, 3.3V
    D14
    VSSIO
    Pad ground
    I/O ground
    D15
    D[7]
    1
    Low
    I/O
    Data I/O
    D16
    D[8]
    1
    Low
    I/O
    Data I/O
    E1
    RXD[2]
    I
    UART 2 receive data input
    E2
    PB[7]
    1
    Input
    I
    GPIO port B
    E3
    TDI
    with p/u*
    I
    JTAG data input
    E4
    WORD
    1
    Low
    O
    Word access select output
    E5
    VSSIO
    Pad ground
    I/O ground
    E6
    nCS[0]
    1
    High
    O
    Chip select 0
    E7
    SDQM[2]
    2
    Low
    O
    SDRAM byte lane mask
    E8
    FRM
    1
    Low
    O
    LCD frame synchronization pulse
    E9
    A[0]
    2
    Low
    O
    System byte address
    E10
    D[5]
    1
    Low
    I/O
    Data I/O
    E11
    VSSOSC
    Oscillator ground
    PLL ground
    E12
    VSSIO
    Pad ground
    I/O ground
    E13
    nMEDCHG/nBROM
    I
    Media change interrupt input / internal ROM boot enable
    E14
    VDDIO
    Pad power
    Digital I/O power, 3.3V
    E15
    D[9]
    1
    Low
    I/O
    Data I/O
    E16
    D[10]
    1
    Low
    I/O
    Data I/O
    F1
    PB[5]
    1
    Input
    I
    GPIO port B
    F2
    PB[3]
    1
    Input
    I
    GPIO port B
    F3
    VSSIO
    Pad ground
    I/O ground
    F4
    TXD[2]
    1
    High
    O
    UART 2 transmit data output
    F5
    RUN/CLKEN
    1
    Low
    O
    Run output / clock enable output
    F6
    VSSIO
    Pad ground
    I/O ground
    F7
    SDCKE
    2
    Low
    O
    SDRAM clock enable output
    F8
    DD[3]
    1
    Low
    O
    LCD serial display data
    F9
    A[1]
    2
    Low
    O
    System byte address
    F10
    D[6]
    1
    Low
    I/O
    Data I/O
    F11
    VSSRTC
    RTC ground
    Real time clock ground
    F12
    BATOK
    I
    Battery OK input
    Table 22. 256-Ball PBGA Ball Listing (Continued)
    Ball Location
    Name
    Strength
    Reset
    State
    Type
    Description
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