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HD4048412FS 데이터시트(PDF) 102 Page - Renesas Technology Corp

부품명 HD4048412FS
상세설명  4-Bit Single-Chip Microcomputer
PDF  127 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD4048412FS 데이터시트(HTML) 102 Page - Renesas Technology Corp

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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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