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HD4048412FS Datasheet(PDF) 102 Page - Renesas Technology Corp |
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HD4048412FS Datasheet(HTML) 102 Page - Renesas Technology Corp |
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102 / 127 page  HD404849 Series 100 LCD Control Register (LCR: $01B): Four-bit write-only register which controls LCD blanking, on/off switching of the liquid-crystal display’s power supply division resistor, display in watch and subactive modes, and connection of the LCD division resistor, as shown in figure 86. • Blank/display Blank: Segment signals are turned off, regardless of LCD RAM data setting. Display: LCD RAM data is output as segment signals. • Power switch on/off Off: The power switch is off. On: The power switch is on and V 1 is VCC. • Watch/subactive mode display Off: In watch and subactive modes, all common and segment pins are grounded and the liquid-crystal power switch is turned off. On: In watch and subactive modes, LCD RAM data is output as segment signals. • LCD power supply division resistor switch Off: Division resistor is disconnected. On: Division resistor is connected. Bit Initial value Read/Write Bit name 3 0 W LCR3 2 0 W LCR2 0 0 W LCR0 1 0 W LCR1 LCD display control register (LCR: $01B) LCR1 0 1 Power switch on/off Off On LCR0 0 1 Blank/display Blank Display 0 1 LCD power supply division resistor switch LCR3 On Off 0 1 Display on/off selection in watch and subactive modes LCR2 Off On Figure 86 LCD Control Register (LCR) |
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