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參數(shù)資料
| 型號： | KS0724 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | 65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD |
| 中文描述： | 65的COM / 132賽格驅(qū)動 |
| 文件頁數(shù)： | 33/66頁 |
| 文件大?。?/td> | 899K |
| 代理商： | KS0724 |
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KS0724 PRELIMINARY SPEC. VER. 0.8 65 COM / 132 SEG DRIVER & CONTROLLER FOR STN LCD
29
Voltage Follower Circuits
VLCD voltage (V0) is resistively divided into four voltage levels (V1, V2, V3 and V4) and those output impedance
are converted by the Voltage Follower for increasing drive capability. The following table shows the relationship
between V1 to V4 level and each duty ratio.
Table 17. The Relationship between V1 to V4 Level and Duty Ratio
Duty ratio
DUTY1
DUTY0
LCD bias
V1
V2
V3
V4
1/5
1/6
1/6
1/8
1/6
1/8
1/7
1/9
(4/5) x V0
(5/6) x V0
(5/6) x V0
(7/8) x V0
(5/6) x V0
(7/8) x V0
(6/7) x V0
(8/9) x V0
(3/5) x V0
(4/6) x V0
(4/6) x V0
(6/8) x V0
(4/6) x V0
(6/8) x V0
(5/7) x V0
(7/9) x V0
(2/5) x V0
(2/6) x V0
(2/6) x V0
(2/8) x V0
(2/6) x V0
(2/8) x V0
(2/7) x V0
(2/9) x V0
(1/5) x V0
(1/6) x V0
(1/6) x V0
(1/8) x V0
(1/6) x V0
(1/8) x V0
(1/7) x V0
(1/9) x V0
1/33
L
L
1/49
L
H
1/55
H
L
1/65
H
H
High Power Mode
The power supply circuit equipped in the KS0724 for LCD drive has very low power consumption (in normal mode:
HPMB = "H"). If use for LCD panels with large loads, this low-power power supply may cause display quality to
degrade. When this occurs, setting the HPMB pin to "L" (high power mode) can improve the quality of the display.
Moreover, if the quality of display is inadequate even after High Power mode has been set, then it is necessary to
add a liquid crystal drive power supply externally (Vout or V0 or V1 / V2 / V3 / V4).
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| KS0794 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:160 COM / 160 SEG DRIVER FOR STN LCD |
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