ST STE2102 User Manual

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STE2102

240x320RGB single-chip true 262K colors

ramless LCD controller/driver

Data Brief

Features

■ 240 x 320RGB display matrix

■ 8 colors & 262K colors modes

■ Programmable number of lines

■ Programmable frame & N-line polarity

inversion

■ System interfaces (read and write)

–I2C
– 3-lines SPI
– 3-lines 9 bits Serial Interface
– 4-lines SPI

■ Graphics interfaces:

– 16/18Bit RGB Interface
– 8Bit YCrCb 4:2:2 Interface

■ Programmable Gamma look-up tables for

optimum colour configuration.

■ Fully integrated Bias system and voltage

generator

■ Designed for chip-on-glass (COG) and

chip-on-foil (COF) applications

■ Logic supply voltage range from 1.5 to 1.95V

■ Interface and control signals supply voltage

range from 1.5 to 3.6V

■ High voltage generator supply voltage range

from 2.2 to 3.6V

■ Selectable scan direction

■ Common electrode and gate-off switching

■ Cap-on-common and cap-on-gate (patented)

TFT structures

■ Gate, common and source waveform timing

generation digitally tunable

■ Gate drivers voltage range from -15 to 16.5V

■ Source drivers voltage range from 0 to 5.5V

■ Common driver voltage range from -2.5 to 4.5V

■ On chip calibration (with OTP Cells) of Key

configuration parameters

Description

The STE2102 is a low power CMOS single-chip
TFT controller/driver featuring an extremely low
current consumption thanks to an innovative
charge pump architecture. Designed to drive a
240 rows by 320RGB columns 262k colors
graphic display, with amplitude modulation
method, the STE2102 provides all the necessary
functions in a single chip, including on-chip gate
drivers supply, source drivers supply and source
reference voltages generators, resulting in a
minimum of externals components.

STE2102 features an high-speed RGB interface
to transfer flicker-free video data, an 8-bit YCrCb
digital video interface and several bi-directional
serial interfaces to configure the display.

The IC is designed to operate with both traditional
Cap-on-CE and with Cap-On-Gate panels.

December 2006 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

www.st.com

4

Table 1. Key features and benefits

Features Benefits

High driving capability Can drive panel sizes up to 4”

Suitable for several application
– portable multimedia

320RGBx240, landscape type

– digital still camera
–printers
– handheld instrumentation

Video interface
– parallel RGB

Suitable for video streaming

–YCC

STE2102

Low power circuitry

Requires few external components
On Chip DC/DC converter

Only ~6mA when driving 3.5” panel with natural
pictures

Reduced number of system components

– Allows parameters setting for calibration and

Integrated OTP (SmarT OTP)

– No need of external EEPROM
– SmarT OTP ensuring high programming yield

Specific features for production
– Bump misalignment
– Bump detachment

Allows module maker to control easily assembly
quality on production chain

– Glass break

Figure 1. STE2102 functional block diagram

Gate drivers VCOM driver Source drivers

Timing

controller

tuning at module maker side

Control

Digital core logic

registers

OTP memory

Control interface

Booster

2/4

(SPI, I2C)

Grey scale &

Gamma compensation

Video interface

(RGB, YCC)