STMicroelectronics : STMicroelectronics Introduces World's First Universal Lighting Controller

  STMicroelectronics : STMicroelectronics Introduces World's First Universal
                             Lighting Controller

Industry-unique device opens the way towards cost-effective, energy-efficient
        lighting systems in the home, in the office, and on the street


Geneva, February 11, 2013 - Domestic, commercial and public lighting systems
can now be made greener, more economical, safer and more flexible, thanks to a
unique device introduced by STMicroelectronics (NYSE: STM), a global
semiconductor leader serving customers across the spectrum of electronics
applications and a world leader in power-management solutions. The world's
first programmable digital controller specifically optimized for lighting and
power-supply applications, the new STLUX385 (Masterlux(TM) platform)
simplifies the design of traditional power-conversion topologies, enabling
faster development of innovative lighting systems.

The key to the new possibilities for improving the performance of LED,
fluorescent and HID (High-Intensity Discharge) lighting systems is the
STLUX385's combination of a proven, cost-effective STM8 microprocessor core
and a unique set of peripherals aimed at simplifying the design of the
lighting power supply and digital control of the lights. Depending on factors
such as the lighting technology used, the input power source (AC or DC),
dimming requirements and safety or reliability issues, many different types of
power conversion and control topologies are required in the current and
emerging lighting applications and the STLUX385 is the first device able to
address all of these via a single programmable chip.

"More than 20% of the electricity generated is used to light our homes,
streets, offices, factories and public areas, and making lighting more
efficient is an essential step on the path towards a sustainable world," said
Matteo Lo Presti, STMicroelectronics Group Vice President, Industrial & Power
Conversion Division. "The STLUX385 distils 25 years of ST leadership in power
conversion solutions into a single high value platform that customers can use
to build more innovative and efficient lighting solutions."

The STLUX385 achieves this goal primarily by integrating six
specially-designed peripherals called SMED (State Machine, Event-Driven)
circuits that interact with each other and with external signals via a
programmable switching matrix to control the power delivered to the lighting
elements. In addition to the specific application signals, the SMEDs can
process external commands to turn the lights on/off or set the dimming level,
diagnostic signals such as open- or short-circuit detected, or inputs from
sensors in applications where the lighting is designed to adapt to ambient

For example, this opens the way towards intelligent LED street lamps that
increase their brightness gradually as daylight fades and, conversely,
automatically reduce their brightness as the sun rises instead of having only
a full brightness or off-setting at predetermined times.

The STLUX385 allows sophisticated lighting systems that currently require the
use of expensive external Digital Signal Processors to be produced with
shorter time-to-market and lower costs. It allows light quality and its
perception to be improved through dedicated algorithms and energy saving
through high-efficiency conversion algorithms, while allowing new interactions
between the user and the lighting system.

In addition to the six SMED peripherals, the STLUX385 also integrates a
hardware DALI (Digital Addressable Lighting Interface) peripheral. Digitally
controlled lighting is the key to energy saving in building and outdoor
lighting installations and the DALI protocol is now in international use
across the lighting industry. The STLUX385 is compatible with wired or
wireless communications, simplifying the installation in large indoor and
outdoor areas and reducing maintenance costs.

The STLUX385 is available now in a compact TSSOP38 package at a price of US$2
in quantities of 1,000 units.

Technical Notes

* Six configurable PWM State Machine Event Driven (SMED) outputs with10.4ns
resolution (up to 1.3ns using automatic dithering)

* DALI Slave HW peripheral

* -40 ºC to 105 ºC outdoor temperature range

* Four Analog Comparators synchronized with a 96MHz clock

* Six fast digital inputs synchronized with a 96MHz clock

* STM8 core-based (up to 20 MIPS)

* 8-channel, 10-bit ADC with programmable op-amp gain and sequencer

* 3V to 5.5V DC voltage supply

About STMicroelectronics
ST is a global leader in the semiconductor market serving customers across the
spectrum of sense and power and automotive products and embedded processing
solutions. From energy management and savings to trust and data security, from
healthcare and wellness to smart consumer devices, in the home, car and
office, at work and at play, ST is found everywhere microelectronics make a
positive and innovative contribution to people's life. By getting more from
technology to get more from life, ST stands for life.augmented.

In 2012, the Company's net revenues were $8.49 billion. Further information on
ST can be found at

For Press Information Contact:

Michael Markowitz
Director Technical Media Relations
+1 781 591 0354
ST Lighting Controller_PRODUCT IMAGE
ST Lighting Controller
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