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LC74760 Datasheet(PDF) 6 Page - Sanyo Semicon Device |
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LC74760 Datasheet(HTML) 6 Page - Sanyo Semicon Device |
6 / 14 page Display Control Commands Display control commands are input in an 8-bit serial format. Commands consist of a command identification code in the first byte and data in the second and following bytes. The following commands are supported. 1 COMMAND0: Display memory (VRAM) write address setting command 2 COMMAND1: Display character data write command 3 COMMAND2: Vertical display start position and character size (lines 1 and 2) setting command 4 COMMAND3: Horizontal display start position and character size (lines 9 and 11) setting command 5 COMMAND4: Display control setting command 1 6 COMMAND5: Display control setting command 2 7 COMMAND6: Display control setting command 3 8 COMMAND7: Display control setting command 4 Display Control Command Table First byte Second byte Command Command identification code Data Data 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 COMMAND0 1 0 0 0 V3 V2 V1 V0 0 0 0 H4 H3 H2 H1 H0 Write address COMMAND1 1 0 0 1 0 0 at2 at1 0 c6 c5 c4 c3 c2 c1 c0 Character write COMMAND2 1 0 1 0 SZ SZ SZ SZ 0 0 VP VP VP VP VP VP Vertical display start position 21 20 11 10 5 4 3 2 1 0 COMMAND3 1 0 1 1 SZ SZ SZ SZ 0 0 HP HP HP HP HP HP Horizontal display start position B1 B0 91 90 5 4 3 2 1 0 COMMAND4 1 1 0 0 RST RAM OSC RND 0 I/N BLK BLK BK ATS 0 DSP Display control 1 1 0 1 COMMAND5 1 1 0 1 PH PH PH I/E 0 TST CHAL BLK RSL RSL 0 0 Display control 2 2 1 0 1 0 COMMAND6 1 1 1 0 MOD MOD MOD MOD 0 0 0 0 IOS BCL BCL CB Display control 3 3 2 1 0 1 0 COMMAND7 1 1 1 1 0 0 0 LINS 0 0 LIN LIN LIN LIN LIN LIN Display control 4 5 4 3 2 1 0 Once the command identification code in the first bite is written, it is stored internally until the first byte of the following command is written. However, when the display character data write command (COMMAND1) is written, the system becomes locked in display character data write mode, and the first byte cannot be overwritten. When the CS pin is set high the command state is set to COMMAND0, i.e., display memory write address setting mode. 1 COMMAND0: Display Memory Write Address Setting Mode First data byte Register content DA0 to DA7 Register name State Function Note 7 — 1 6 — 0 The command 0 identification code: 5 — 0 sets the display memory write address. 4 — 0 3 V3 0 1 2 V2 0 1 Display memory line address (from 0 to B (hexadecimal)) 1 V1 0 1 0 V0 0 1 No. 4453-6/14 LC74760, 74760M |
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