參數(shù)資料
型號(hào): HD66701
廠商: Hitachi,Ltd.
英文描述: Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
中文描述: 點(diǎn)陣式液晶顯示控制器/驅(qū)動(dòng)器(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
文件頁(yè)數(shù): 46/69頁(yè)
文件大?。?/td> 352K
代理商: HD66701
HD66702/HD66701
46
Power Supply for Liquid Crystal Display Drive
Various voltage levels must be applied to pins V1 to V5 of the HD66701/2 to obtain the liquid crystal
display drive waveforms. The voltages must be changed according to the duty factor (Table 11).
VLCD is the peak value for the liquid crystal display drive waveforms, and resistance dividing provides
voltages V1 to V5 (Figure 22).
Table 11
Duty Factor and Power Supply for Liquid Crystal Display Drive
Duty Factor
1/8, 1/11
1/16
Bias
Power Supply
1/4
1/5
V1
V
CC
–1/4 VLCD
V
CC
–1/2 VLCD
V
CC
–1/2 VLCD
V
CC
–3/4 VLCD
V
CC
–VLCD
V
CC
–1/5 VLCD
V
CC
–2/5 VLCD
V
CC
–3/5 VLCD
V
CC
–4/5 VLCD
V
CC
–VLCD
V2
V3
V4
V5
V
CC
V1
V2
V4
V5
V3
V
CC
V1
V2
V3
V4
V5
R
R
R
R
VR
V
CC
V
CC
R
R
R
R
R
VR
VLCD
VLCD
1/4 bias
(1/8, 1/11 duty cycle)
Note: R changes depending on the size of liquid crystal panel.
Normally, R is, 4.7 k
to 20k
.
1/5 bias
(1/16, duty cycle)
HD66702
HD66701
HD66702
HD66701
V
EE
V
EE
Figure 22 Drive Voltage Supply Example
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相關(guān)代理商/技術(shù)參數(shù)
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HD66702 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
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