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LC74798M Datasheet(PDF) 8 Page - Sanyo Semicon Device |
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LC74798M Datasheet(HTML) 8 Page - Sanyo Semicon Device |
8 / 32 page Display Control Commands Display control commands have an 8-bit format and are transferred using the serial input function. Commands consist of a command identification code in the first byte and command data in the following bytes. The following commands are supported. 1 COMMAND0: Display memory (VRAM) write address setup command 2 COMMAND1: Display character data write command 3 COMMAND2: Vertical display start position and vertical character size setup command 4 COMMAND3: Horizontal display start position and horizontal character size setup command 5 COMMAND4: Display control setup command 6 COMMAND5: Display control setup command 7 COMMAND6: Synchronizing signal detection setup command 8 COMMAND7 to COMMAND12: Display control setup commands 9 COMMAND13 to COMMAND17: VPS/PDC control commands No. 5833-8/32 LC74798, 74798M Display Control Command Table First byte Second byte Command Command identification code Data Data 7654321076543210 COMMAND0 1000 V3 V2 V1 V0 000 H4 H3 H2 H1 H0 (Write address setup) COMMAND1 10010000 at c6 c5 c4 c3 c2 c1 c0 (Character write) COMMAND2 (Vertical character size 1010 VS VS VS VS 0 FS VP VP VP VP VP VP and vertical display start position) 21 20 11 10 5 43210 COMMAND3 (Horizontal character size 1011 HS HS HS HS 00 HP HP HP HP HP HP and horizontal display start position) 21 20 11 10 5 43210 COMMAND4 1100 TST RAM OSC SYS 0 BLK BLK BLK BK BK RV DSP (Display control) MOD ERS STP RST 2 1 0 1 0 ON COMMAND5 1101 NP1 NP0 NON INT 0 RSH HLF BCL CB PH PH PH (Display control) LV2 INT 2 1 0 COMMAND6 1110 SEL MOD DIS MUT 0 RN RN RN SN SN SN SN (Synchronizing signal detection) 0 0 LIN 2 1 03210 COMMAND7 111100000 CIN CIN VNP VSP MSK MSK EGL (Display control) SEL CTL SEL SEL ERS SEL COMMAND8 111100010 LNA LNA LNA LNA LPA LPA LPA (Display control) 3210210 COMMAND9 111100100 LNB LNB LNB LNB LPB LPB LPB (Display control) 3210210 COMMAND10 111100110 LNC LNC LNC LNC LPC LPC LPC (Display control) 3210210 COMMAND11 1111010000 VSP VSP LNC MOD LNB MOD (Display control) DCK SLC SEL 3 SEL 2 COMMAND12 111101010 VIN VIN SEL HLF SEL SEL CTL (Display control) NP 2 22 TON 2 1 3 COMMAND13 111101100 CPA CPA 0 VPM VPM VPM VPM (VPS/PDC control) 10 3210 COMMAND14 111101110 VMW VMW HBS HBS BMS EMS DCE (VPS/PDC control) SE2 SEL 2 1 COMMAND15 1111100000 ECV ECV ECV ECV ECV ECV (VPS/PDC control) 15 14 13 12 11 5 COMMAND16 111110010 ECP ECP ECP ECP ECP ECP ECP (VPS/PDC control) 19 18 17 16 15 14 13 COMMAND17 1111101000 ECP ECP ECP ECP ECP ECP (VPS/PDC control) 25 24 23 22 21 20 Once written, a first byte command identification code is stored until the next first byte is written. However, when the display character data write command (COMMAND1) is written, the LC74798/M locks into the display character data write mode, and another first byte cannot be written. When the CS pin is set high, the LC74798/M is set to the COMMAND0 (display memory write address setup mode) state. |
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