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  • 參數(shù)資料
    型號: KM4132G271BQ(R)-7
    廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
    英文描述: 128K x 32bit x 2 Banks Synchronous Graphic RAM LVTTL
    中文描述: 128K的x 32位× 2銀行同步圖形RAM的LVTTL
    文件頁數(shù): 19/51頁
    文件大?。?/td> 1033K
    代理商: KM4132G271BQ(R)-7
    KM4132G271B
    CMOS SGRAM
    - 19
    Rev. 2.4 (May 1998)
    1) Write Mask (BL=4)
    2. DQM Operation
    WR
    D
    0
    D
    1
    D
    3
    D
    0
    D
    1
    D
    3
    CLK
    CMD
    DQMi
    Note 1
    DQ(CL2)
    DQ(CL3)
    Masked by DQM
    2) Read Mask (BL=4)
    RD
    Q
    0
    Q
    2
    Q
    3
    Q
    1
    Q
    2
    Q
    3
    Masked by DQM
    Hi-Z
    DQM to Data-in Mask = 0CLK
    DQM to Data-out Mask = 2CLK
    Hi-Z
    3) DQM with Clock Suspended (Full Page Read)
    Note 2
    RD
    CLK
    CMD
    CKE
    DQ(CL2)
    DQ(CL3)
    Q
    0
    Q
    4
    Q
    7
    Q
    8
    Q
    2
    Q
    3
    Q
    6
    Q
    7
    Q
    1
    Hi-Z
    Hi-Z
    Hi-Z
    Hi-Z
    Hi-Z
    Hi-Z
    DQM
    *Note :
    1. There are 4 DQMi(i=0~3).
    Each DQMi masks 8 DQi
    s.(1 Byte, 1 Pixel for 8 bpp)
    2. DQM makes data out Hi-Z after 2 clocks which should masked by CKE " L".
    Q
    6
    Q
    5
    1) Clock Suspended During Write (BL=4)
    1. CLOCK Suspend
    WR
    D
    0
    D
    1
    D
    2
    D
    3
    D
    0
    D
    1
    D
    2
    D
    3
    CLK
    CMD
    CKE
    Internal
    CLK
    DQ(CL2)
    DQ(CL3)
    Masked by CKE
    2) Clock Suspended During Read (BL=4)
    D
    0
    Q
    1
    Not Written
    BASIC FEATURE AND FUNCTION DESCRIPTIONS
    RD
    Q
    0
    Q
    2
    Q
    0
    Q
    1
    Q
    2
    Q
    3
    Masked by CKE
    Q
    3
    Suspended Dout
    Note : CKE to CLK disable/enable=1 clock
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