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NJU6818 Datasheet(PDF) 62 Page - New Japan Radio |
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NJU6818 Datasheet(HTML) 62 Page - New Japan Radio |
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62 / 102 page  NJU6818 - 62 - (32-8) Display control (2) The “Display control (2)” instruction is used to control display conditions by setting the “Segment direction”, “SWAP mode ON/OFF”, “N-line inversion ON/OFF” and “Reverse display ON/OFF” registers. CSb RS RDb WRb RE2 RE1 RE0 D7 D6 D5 D4 D3 D2 D1 D0 0 1 1 0 0 0 0 1 0 0 1 REV NLIN SWAP REF REF register The “REF” register is used to reverse the assignment between segment drivers and column address, and it is possible to reduce restrictions for placement of the LSI on the LCD module. For more information, see (10) “The relation among the DDRAM column address, display data and segment drivers”. SWAP register The “SWAP” register is used to reverse the arrangement of display data in the DDRAM. SWAP=0 : SWAP mode OFF (Normal) SWAP=1 : SWAP mode ON SWAP=”0” SWAP=”1” Write data D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 RAM data D7 d6 d5 d4 d3 d2 d1 d0 d0 d1 d2 d3 d4 d5 d6 d7 Read data D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0 NLIN register The “NLIN” is used to enable or disable the N-line inversion. NLIN=0 : N-line inversion OFF (The FR signal toggles by the flame.) NLIN=1 : N-line inversion ON (The FR signal toggles once every N lines.) REV register The “REV” register is used to enable or disable the reverse display mode that reverses the polarity of display data without changing display data of the DDRAM. REV=0 : Reverse display mode OFF REV=1 : Reverse display mode ON REV Display DDRAM data → Display data 0 0 0 Normal 1 1 0 1 1 Reverse 1 0 |
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