參數(shù)資料
型號: KS0717
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Driver & Controller for STN LCD(STN LCD驅(qū)動器和控制器)
中文描述: 驅(qū)動程序
文件頁數(shù): 27/57頁
文件大?。?/td> 288K
代理商: KS0717
55COM/100SEG DRIVER & CONTROLLER FOR STN LCD
KS0717
27
Preliminary
VOLTAGE FOLLOWER CIRCUITS
V
LCD
voltage (V0) is resistively divided into four voltage levels (V1, V2, V3, V4), and those output impedance are
converted by the voltage follower for increasing drive capability. Table 14. shows the relationship between V1
V4
level and each duty ratio.
REFERENCED POWER SUPPLY CIRCUIT FOR DRIVING LCD PANEL
Table 14. The Relationship Between V1
-
V4 Level and Each Duty Ratio
Duty Ratio
1/55
DUTY Pin
1
LCD Bias
1/8
1/6
1/6
1/5
V1
V2
V3
V4
7/8
×
V0
5/6
×
V0
5/6
×
V0
4/5
×
V0
6/8
×
V0
4/6
×
V0
4/6
×
V0
3/5
×
V0
2/8
×
V0
2/6
×
V0
2/6
×
V0
2/5
×
V0
1/8
×
V0
1/6
×
V0
1/6
×
V0
1/5
×
V0
1/34
0
Figure 12. When Using All LCD Power Circuits (4-Times VC: On, V/R: On, V/F: On)
V
DD
MS INTRS
VOUT
C3+
C3 -
C2+
C2 -
C1+
C1 -
VR
V0
V1
V2
V3
V4
Vss
C1
C1
C2 - +
C2 - +
C2 - +
C2 - +
C2 - +
C1
C1
V
DD
MS INTRS
VOUT
C3+
C3 -
C2+
C2 -
C1+
C1 -
VR
V0
V1
V2
V3
V4
Vss
C1
C1
C2 - +
C2 - +
C2 - +
C2 - +
C2 - +
C1
C1
Ra
Rb
Vss
When Using Internal Regulator Resistors
When not Using Internal Regulator Resistors
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