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H838532H Datasheet(PDF) 398 Page - Renesas Technology Corp |
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H838532H Datasheet(HTML) 398 Page - Renesas Technology Corp |
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398 / 508 page  Section 13 LCD Controller/Driver Rev. 1.00 May 30, 2008 Page 378 of 484 REJ09B0436-0100 13.3.2 Relationship between LCD RAM and Display The relationship between the LCD RAM and the display segments differs according to the duty cycle. LCD RAM maps for the different duty cycles are shown in figures 13.5 to 13.8. After setting the registers required for display, data is written to the part corresponding to the duty using the same kind of instruction as for ordinary RAM, and display is started automatically when turned on. Word- or byte-access instructions can be used for RAM setting. Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 SEG2 SEG2 SEG2 SEG2 SEG1 SEG1 SEG1 SEG1 SEG32 H'F740 H'F74F SEG32 SEG32 SEG32 SEG31 SEG31 SEG31 SEG31 COM4 COM3 COM2 COM1 COM4 COM3 COM2 COM1 Figure 13.5 LCD RAM Map (1/4 Duty) |
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