SOLOMON SYSTECH
SEMICONDUCTOR TECHNICAL DATA
SSD1820A
SSD1821
Advance Information
LCD Segment / Common Driver
with Controller
CMOS
SSD1820A/21 is a single-chip CMOS LCD driver with controller for a liquid crystal
dot-matrix graphic display system. SSD1820A consists of 194 high voltage driving out-
put pins for driving 128 Segments, 64 Commons and 2 icon driving Commons, while
SSD1821 consists of 210 high voltage driving output pins for driving 128 Segments,
80 Commons and 2 icon driving Commons.
TAB
SSD1820A/21 displays data directly from its internal 128x65/128X81 bits Graphic
Display Data RAM (GDDRAM). Data/Commands are sent from general MCU through
a hardware selectable 6800-/8080-series compatible Parallel Interface or 3/4 wires
Serial Peripheral Interface.
Gold Bump Die
SSD1820A/21 embeds a DC-DC Converter, a LCD Voltage Regulator, an On-
Chip Bias Divider and an On-Chip Oscillator which reduce the number of external
components. With the special design on minimizing power consumption and die/pack-
age layout, SSD1820A/21 is suitable for any portable battery-driven applications re-
quiring a long operation period and a compact size.
ORDERING INFORMATION
SSD1820AZ
SSD1821Z
Gold Bump Die
Gold Bump Die
SSD1820ATR1 TAB
SSD1821TR1 TAB
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128 x 64/80 Graphic Display with a Icon Line
Programmable Multiplex ratio [16Mux - 65Mux/81Mux] (Partial Display)
Single Supply Operation, 1.8 V - 3.3V
Low Current Sleep Mode(<1.0uA)
On-Chip Voltage Generator / External Power Supply
Software selectable 2X / 3X / 4X / 5X / 6X On-Chip DC-DC Converter
On-Chip Oscillator
Software Selectable On-Chip Bias Dividers
Programmable 1/4, 1/5, 1/6, 1/7, 1/8, 1/9 and 1/10 bias ratio
Maximum +15.0V LCD Driving Output Voltage
Hardware pin selectable for 8-bit 6800-series Parallel Interface, 8-bit 8080-series Par-
allel Interface, 3-wire Serial Peripheral Interface or 4-wire Serial Peripheral Interface
On-Chip 128 x 65/81 Graphic Display Data RAM
Re-mapping of Row and Column Drivers
Vertical Scrolling
Display Offset Control
64 Levels Internal Contrast Control
External Contrast Control
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Maximum 17MHz SPI or 15MHz PPI operation
Selectable LCD Driving Voltage Temperature Coefficients (2 settings)
Available in Gold Bump Die and Standard TAB (Tape Automated Bonding) Package
This document contains information on a new product. Specifications and information herein are subject to change without notice.
REV 1.4
01/03
Copyright © 2002/2003 Solomon Systech Limited.