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Atmel Expands LIN Portfolio With New LIN2.0 System Basis Chip Featuring Silent Mode Operation

Heilbronn, Germany (ots/PRNewswire)

- Extremely Low Power Consumption and Reduced System Costs
Atmel(R) Corporation (Nasdaq: ATML), a global leader in the
development and fabrication of advanced semiconductor solutions,
announced today the availability of its ATA6621 LIN system basis chip
(SBC) which complies with the new LIN2.0 standard. Compared to
stand-alone LIN transceivers, system basis chips such as the ATA6621
are highly integrated and include a voltage regulator plus a
watchdog. The new SBC device is designed with Atmel's high-voltage
BCDMOS process and is optimized for operation up to 40V for
applications in harsh environments. This includes high-volume
automotive comfort applications such as door modules, seat control or
intelligent sensors, and also powertrain applications such as engine
control systems.
Due to the monolithic integration of the 5V voltage regulator and
the watchdog, system costs can be reduced by approximately 25% since
the discrete components required by other solutions, not using SBC
chips, are not needed. As a result, the ATA6621 also needs less board
space, which makes it ideally suited for applications requiring very
small footprints. Another outstanding feature of the new LIN SBC is
its extremely low quiescent current consumption of typically 10 uA in
standby mode. If the microcontroller is in sleep mode, a reduced
voltage regulator accuracy is sufficient to scan switches or supply
flashing LEDs. The additional silent mode has been implemented to
achieve quiescent currents as low as 40 uA, whereas normal mode would
require 50 mA.
"Today's applications are getting smaller and smaller. Sensor LIN
slave nodes, for example, provide ever-decreasing PCB area. Such
applications will benefit from the high integration of this new LIN
system basis chip," said Torsten Mann, Atmel's Marketing Director for
Automotive and Control products. "An important feature is the silent
mode that our SBC chip provides. Due to the increasing number of ECUs
in a vehicle and the communication via the bus systems, the overall
current consumption of the ECUs needs to be kept as low as possible
due to the permanent power requirements placed on the vehicle's
battery."
To minimize EMC problems, the ATA6621 incorporates a controlled
slew rate complying with the LIN 2.0 specification. The receiver's
input filter helps to minimize RF interference caused by signals on
the bus line. To meet the 42V power net requirements, the bus output
can tolerate short circuits of up to 60V. Furthermore, the ATA6621
LIN IC provides several protective features such as over-temperature
shut down and full protection against short circuits.
The dominant time-out function on the transmit pin prevents the
bus line from being driven permanently in a dominant state.
Furthermore, the ATA6621 has an additional WAKE pin, which is not
provided by all LIN SBCs on the market. A wake-up source recognition
indicates at the transmit and receive pins which wake-up has
occurred: the local wake-up via pin WAKE or the remote wake-up via
the LIN bus line. Depending on the recognized wake-up source, the
microcontroller selects the appropriate routines.
The device also meets strict automotive qualification demands
(protection against conducted interference, EMC and 6-kV ESD
protection at the Supply and LIN pins) and can withstand transients
as specified in ISO/TR 7637/1.
ATA6621 LIN SBC IC samples are available now in Pb-free QFN20
packages with pricing starting at US $0.83 for 10k piece quantities.
Additional LIN SBC family members and versions with integrated
microcontroller for optimized performance and further PCB area
reduction will be introduced in Q1 2006.
    Footnote
    BCDMOS = Mixed-signal technology with Bipolar, CMOS and DMOS components
    ECU = Electronic Control Unit
    EMC = Electro-Magnetic-Compatibility
    ESD = Electronic Static Discharge
    LED = Ligh-Emitting Diode
    LIN = Local Interface Network
    PCB = Printed Circuit Board
    SBC = System Basis Chip
About Atmel
Atmel is a worldwide leader in the design and manufacture of
microcontrollers, advanced logic, mixed-signal, nonvolatile memory
and radio frequency (RF) components. Leveraging one of the industry's
broadest intellectual property (IP) technology portfolios, Atmel is
able to provide the electronics industry with complete system
solutions. Focused on consumer, industrial, security, communications,
computing and automotive markets, Atmel ICs can be found Everywhere
You Are(R).
NOTE: Atmel(R), logo and combinations thereof, Everywhere You
Are(R) and others are registered trademarks or trademarks of Atmel
Corporation or its subsidiaries. Other terms and product names may be
trademarks of others.
Information
Product information on Atmel's new LIN system basis chip (SBC)
ATA6621 may be retrieved at:
http://www.atmel.com/dyn/products/product_card.asp?part_id=3812
    Press Contacts
    Dr. Susanne van Clewe, Marcom Manager Communications and Automotive
    Products
    Phone: +49-7131-67-2081, Email:  susanne.van-clewe@hno.atmel.com
    Helen Perlegos, Public Relations - USA and Asia Pacific
    Phone: +1-408-487-2963, Email:  hperlegos@atmel.com
    Veronique Sablereau, Corporate Communications Manager - Europe
    Phone: +33-1-30-60-70-68, Fax: +49-7131-67-2423, Email:
     veronique.sablereau@atmel.com
Web site: http://www.atmel.com

Contact:

Dr. Susanne van Clewe, Marcom Manager Communications and Automotive
Products, +49-7131-67-2081, or susanne.van-clewe@hno.atmel.com, or
Helen Perlegos, Public Relations - USA and Asia Pacific,
+1-408-487-2963, or hperlegos@atmel.com, or Veronique Sablereau,
Corporate Communications Manager Europe, +33-1-30-60-70-68, or fax,
+49-7131-67-2423, or
veronique.sablereau@atmel.com

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