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LC74799 データシート(PDF) 10 Page - Sanyo Semicon Device |
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LC74799 データシート(HTML) 10 Page - Sanyo Semicon Device |
10 / 32 page No. 5834-10/32 LC74799, 74799M • Second byte Note: All registers are set to 0 when the LC74799/M is reset by the RST pin. DA Register Contents Notes 0 to 7 State Function 7at 0 Character attribute off 1 Character attribute on 6c6 0 1 5c5 0 1 4c4 0 1 3c3 0 1 2c2 0 1 1c1 0 1 0c0 0 1 Character code (00 to 7F hexadecimal) Note: All registers are set to 0 when the LC74799/M is reset by the RST pin. COMMAND2 (Vertical display start position and vertical character size setup command) • First byte DA Register Contents Notes 0 to 7 State Function 7— 1 6— 0 5— 1 4— 0 3 VS21 0 1 2 VS20 0 1 1 VS11 0 1 0 VS10 0 1 Command 2 identification code. Sets the vertical display start position and the vertical character size. Second line vertical character size First line vertical character size • Second byte DA Register Contents Notes 0 to 7 State Function 7 — 0 Second byte identification bit 6FS 0 Crystal oscillator frequency: 2fsc 1 Crystal oscillator frequency: 4fsc 5 VP5 0 (MSB) 1 4 VP4 0 1 3 VP3 0 1 2 VP2 0 1 1 VP1 0 1 0 VP0 0 (LSB) 1 The vertical display start position is set by the 6 bits VP0 to VP5. The weight of bit 1 is 2H. If VS is the vertical display start position then: 5 VS = H × (2 ∑ 2n VPn) n=0 H: the horizontal synchronization pulse period Character display area 01 0 1H/dot 2H/dot 1 3H/dot 1H/dot VS21 VS20 01 0 1H/dot 2H/dot 1 3H/dot 1H/dot VS11 VS10 |
同様の部品番号 - LC74799 |
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同様の説明 - LC74799 |
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