MSTN LCD DRIVER IC UC1618t

Single-Chip, Ultra-Low Power
128COM x 268SEG Matrix
Passive LCD Controller-Driver
INTRODUCTION
UC1618t is an advanced high-voltage mixedsignal
CMOS IC, especially designed for the
display needs of low power hand-held devices.
This chip employs UltraChips unique DCC
(Direct Capacitor Coupling) driver architecture
and FRM (Frame Rate Modulation) gray-shade
modulation scheme to achieve near crosstalk
free images, with well balanced gray shades.
In addition to low power COM and SEG drivers,
UC1618t contains all necessary circuits for high-
V LCD power supply, bias voltage generation,
temperature compensation, timing generation
and graphics data memory.
Advanced circuit design techniques are
employed to minimize external component counts
and reduce connector size while achieving
extremely low power consumption.
MAIN APPLICATIONS
Cellular Phones and other battery operated
palm top devices or portable Instruments
FEATURE HIGHLIGHTS
Single chip controller-driver for 128x268
matrix STN LCD with 4 gray shades and
B/W Mode.
A software-readable ID pin to support
configurable vender identification.
Partial scroll function and programmable
data update window to support flexible
manipulation of screen data.
Support both page ordered and column
ordered display buffer RAM access.
Support industry standard 2-wire, 3-wire
serial buses (S8, S9), and 8-bit, 16-bit
parallel bus (8080 or 6800).
Special driver structure and gray shade
modulation scheme. Consistent low power
consumption under all display patterns.
Fully programmable Mux Rate, partial
display window, Bias Ratio and Line Rate
allow many flexible power management
options.
Four software programmable frame rates
up to 66Hz. Support the use of fast Liquid
Crystal material for speedy LCD response.
Software programmable 4 temperature
compensation coefficients.
On-chip Power-ON Reset and Software
RESET command, make RST pin optional.
Self-configuring 10x charge pump with onchip
pumping capacitors. Only 3/5 external
capacitors are required to operate.
Flexible data addressing/mapping schemes
to support wide ranges of software models
and LCD layout placements.
Very low pin count (9~10 pins with S8 or S9)
allows exceptional image quality in COG
format on conventional ITO glass.
Many on-chip and I/O pad layout features to
support optimized COG applications.
VDD (digital) range (Typ.) : 1.8V ~ 3.3V
VDD (analog) range (Typ.) : 2.8V ~ 3.3V
LCD VOP range: 6.3V ~ 17.5V
Available MTP trimming support precise
LCD contrast matching.
Available in gold bump dies
Bump pitch: 24