SSD1818 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

SSD1818

LCD Segment / Common Driver with Controller

Unspecified 

VSS1 VEE

SSD1818

C3N

C1P

C1N

C2N

C2P

C4N

+

C1

VSS1 VEE

C1+ +C1

C1+ +C1

5X Boosting Configuration

SSD1818

C3N C1P

C1N

C2N C2P

C4N

+ C1

C1 + + C1

+ C1

4X Boosting Configuration

SSD1818

VSS1 VEE C3N

C1P

C1N

C2N C2P

C4N

+ C1

+ C1

+ C1

3X Boosting Configuration

SSD1818

VSS1 VEE C3N

C1P

C1N

C2N C2P

C4N

+ C1

+ C1

2X Boosting Configuration

Remarks:

1.

2.

3.

4.

C1= 0.47 – 1.0uF

Boosting input from VSS1

VSS1 should be lower potential than or equal to VSS

All voltages are referenced to VDD

Figure 5 - DC-DC Converter Configurations

2. Voltage Regulator (Voltages referenced to VDD)

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.

3. Contrast Control (Voltage referenced to VDD)

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:

VL6 –VDD = Gain * [1 + (18 + α )] * Vref

81

α stands for the contrast set (0 to 63)

SSD1818 Series

Rev 1.2

08/2002

14

SOLOMON

Share Link: