參數(shù)資料
型號(hào)： SSD1818AZ
廠商： Electronic Theatre Controls, Inc.
英文描述： LCD Segment / Common Driver with Controller
中文描述： LCD段/驅(qū)動(dòng)器與控制器通用
文件頁(yè)數(shù)： 17/47頁(yè)
文件大?。?/td> 642K
代理商： SSD1818AZ
SSD1818A
Rev 1.2
P 17/47 Mar 2004
Solomon Systech
Figure 5 - DC-DC Converter Configurations
2. Voltage Regulator (Voltages referenced to V
DD
)
Internal (IRS pin = H) feedback gain can control the LCD driving contrast curves.
If internal resistor network is enabled, eight settings can be selected through software command.
If external control is selected, external resistors are connected between V
DD
and V
F
(R1), and between V
F
and V
L6
(R2).
3. Contrast Control (Voltage referenced to V
DD
)
Software control of the 64-contrast voltage levels at each voltage regulator feedback gain. The
equation of calculating the LCD driving voltage is given as:
V
L6
–V
DD
= Gain * [1 + (18 +
α
)] * V
ref
81
α
stands for the contrast set (0 to 63)
SSD1818A
5X Boosting Configuration
V
SS1
V
EE
C
3N
C
1P
C
1N
C
2N
C
2P
C
4N
C1
+
+
C1
+
C1
C1
+
+
C1
4X Boosting Configuration
V
SS1
V
EE
C
3N
C
1P
C
1N
C
2N
C
2P
C
4N
C1
+
+
+
C1
C1
+
SSD1818A
3X Boosting Configuration
V
SS1
V
EE
C
3N
C
1P
C
1N
C
2N
C
2P
C
4N
C1
+
+
C1
C1
+
SSD1818A
2X Boosting Configuration
V
SS1
V
EE
C
3N
C
1P
C
1N
C
2N
C
2P
C
4N
C1
+
+
C1
SSD1818A
Remarks:
1.
2.
3.
4.
C1= 0.47 – 4.7uF
Boosting input from V
SS1
V
SS1
should be lower potential than or equal to V
SS
All voltages are referenced to V
DD
C1
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