• 參數(shù)資料
    型號: LC74789M
    廠商: SANYO SEMICONDUCTOR CO LTD
    元件分類: 畫面疊加
    英文描述: ON-SCREEN DISPLAY IC, PDSO24
    封裝: 0.375 INCH, PLASTIC, MFP-24
    文件頁數(shù): 4/23頁
    文件大?。?/td> 209K
    代理商: LC74789M
    No. 5732-12/23
    LC74789, 74789M, 74789JM
    COMMAND3 (Horizontal display start position and horizontal size setup command)
    First byte
    DA
    Register
    Contents
    Notes
    0 to 7
    State
    Function
    7
    1
    6
    0
    Command 3 identification code.
    5
    1
    Sets the horizontal display start position and the horizontal character size.
    4
    1
    3
    HS21
    0
    1
    Second line horizontal character size
    2
    HS20
    0
    1
    HS11
    0
    1
    First line horizontal character size
    0
    HS10
    0
    1
    HS20
    0
    1
    HS21
    0
    1 Tc/dot
    2 Tc/dot
    1
    3 Tc/dot
    1 Tc/dot
    Second byte
    DA
    Register
    Contents
    Notes
    0 to 7
    State
    Function
    7
    0
    Second byte identification bit
    6
    LC
    0
    Use the LC oscillator for the dot clock
    1
    Use the crystal oscillator for the dot clock
    5
    HP5
    0
    If HS is the horizontal start position then:
    (MSB)
    1
    HS =Tc
    × (2Σ 2n HPn)
    4
    HP4
    0
    Tc: Period of the oscillator connected to OSCIN/OSCOUT in operating
    1
    mode.
    3
    HP3
    0
    1
    2
    HP2
    0
    1
    HP1
    0
    1
    0
    HP0
    0
    (LSB)
    1
    Note: All registers are set to 0 when the LC74789/M/JM is reset by the RST pin.
    5
    n=0
    HS10
    0
    1
    HS11
    0
    1 Tc/dot
    2 Tc/dot
    1
    3 Tc/dot
    1 Tc/dot
    The horizontal display start position is set by the 6
    bits HP0 to HP5.
    The weight of bit 1 is 2Tc.
    Selects the dot clock used for character display in the
    horizontal direction.
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