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ST72589BW Datasheet(PDF) 45 Page - STMicroelectronics |
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ST72589BW Datasheet(HTML) 45 Page - STMicroelectronics |
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45 / 158 page  ST72589BW, ST72389BW 45/158 LCD DRIVER (Cont’d) LCD RAM DESCRIPTION The LCD RAM is located in the data space in one page of 60 bytes. Each bit of the LCD RAM is mapped to one dot of the LCD matrix. If a bit is set, the corresponding LCD dot is switched on, else the dot is switched off. After reset, the LCD RAM is not initialized and con- tains arbitrary information. The bit position of the selected bit in the LCD RAM byte gives the common data. The segment data is giv- en by the LCD RAM relative address. Table 15. LCD Driver Register Map and Reset Values LCD RAM Bit position 7 6 5 4 3 2 1 0 LCD Common COM8 COM7 COM6 COM5 COM4 COM3 COM2 COM1 LCD RAM Relative address 00h 01h 02h ................... 39h 3Ah 3Bh LCD Segment S1 S2 S3 S58 S59 S60 Address (Hex.) Register Label 7654 3210 0058h LCDCR Reset Value DCS 00 CD1 0 CD0 0 LCDE 00 FS1 0 FS0 0 0480h to 04BBh LCDRAM Reset Value Seg X Com8 X Seg X Com7 X Seg X Com6 X Seg X Com5 X Seg X Com4 X Seg X Com3 X Seg X Com2 X Seg X Com1 X |
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