Description
EM6127 is a controller and driver for graphic or
character monochrome TN – Twisted Nematic, STN –
Super-Twisted Nematic and Filtered STN LCD
displays. Several EM6127 integrated functions save
system power needs. The enhanced EM6127 driver
displays different character or bitmap formats. Various
effects are available such as scrolling, reverse,
blinking and more are available. In addition, the
controller is able to display ROM-defined or RAM
custom-made messages. EM6127 can start in userdefined modes and configurations.
The EM6127 is an extremely low power LCD
controller and driver product. The typical current
consumption is typically 20 µA in MUX 32
configuration with internally generated VLCD and
external capacitors.
The one character line, active addressing mode is an
important feature of the EM6127. It provides
significant improvement in current consumption. The
typical current consumption in this mode is only 5 µA.
The 5x7 character format can be zoomed 2 or 3 times
(10x14 and 15x21), such that a large date can be
displayed, for example.

Features
 Max. addressable matrix: 32 rows x 101 columns
 Slim IC for Chip-On-Film, Glass or Plastic
technologies (COF, COG, COP)
 VDD supply voltage:
o Low voltage configuration: 1.2V to 2V
o Standard configuration: 2V to 3.6 V
 Power consumption:
o Full matrix mode, 20 µA with internally
generated VLCD and external capacitors
o One character line mode, 5 µA with
internally generated VLCD and external
capacitors
 I
2C interface and Serial bus interface
 R/W Internal Display Data RAM for characters
 Character Generator RAM: 16 characters or
bitmap
 Character Generator ROM: 240 characters or
bitmap
 Programmable characters or bitmap font format:
o 5x7, 6x8, 5x10, 10x16, 15x24
 Personalization of ROM – define your own
characters
 Programmable Multiplex rates:
o static, 2, 3, 4, 8,10,16, 20, 24, 32
 16 different predefined display modes in ROM
 Full bitmap mode
 Horizontal and vertical scrolling by dot with four
selectable speeds of scrolling
 Full and partial scrolling
 Reverse mode display
 Inverse mode for character or line
 Blink (four frequencies and four duty cycles) for
character or line
 Programmable cursor: XOR, OR, AND operations
 Characters superposition function
 Four sequences of sixteen characters max.
available
 64 predefined messages in ROM and 16
messages in RAM
 Partial display mode and one character line mode
 LCD supply voltage VLCD internally generated
and digitally programmable in 127 steps from
1.25V to 7.6V; external VLCD possible
 Selectable 1, 2, 3, 4, 5 voltage multiplier factor for
VLCD
 Selectable bias voltages generation
 Oscillator for LCD refresh
 LED driver for back or front light illumination, with
two independent outputs and external adjustable
current limitation
 LED supply voltage internally generated and
digitally programmable by 31 steps from 3.7V to
5.25V; external VLED possible
 Selectable temperature coefficient for LCD
thermal compensation
 High noise immunity on inputs
 Operation temperature range: -40°C to +85°C

Applications
 Battery powered devices
 Printers and Fax
 Weigh scale, utility meters
 Point-of-sale terminals
 Home appliances