Atmel Corporation

Atmel Extends Its Family of RF Car Access ICs With Introduction of Full Duplex RF Transceiver for Growing Passive Entry Go (PEG) Market

    Heilbronn, Germany (ots/PRNewswire) -

    - Designed to Prevent Relay Attacks for Increased Security Level

    Atmel(R) Corporation (Nasdaq: ATML) announced today the availability of  its new full duplex RF transceiver ICs ATA5824 and ATA5823. These two new  devices are optimized for automotive keyless entry/passive entry go (PEG)  and tire pressure monitoring (TPMS) systems. They can also be used for remote  control, alarm, telemetering, energy metering and home automation systems to  name but a few potential applications. The ATA5824 and the ATA5823 provide full duplex functionality, which helps to secure RF systems against automotive theft and other unauthorized system access. In addition, the  devices enable system cost reduction since in automotive applications; only  one transceiver will be needed for car access plus TPMS functions instead of  one transceiver for each system. The ATA5823 is designed for 313 to 316 MHz,  whereas the ATA5824 operates at 433 to 435 MHz and 867 to 870 MHz. Both  transceivers are pin- and functionally identical. They support data rates of  1 kBaud to 20 kBaud (FSK) and 1 kBaud to 10 kBaud (ASK) in Manchester,  Bi-phase or other codes in transparent mode.

    The ATA5823's and the ATA5824's current consumption is both in receive and in transmit mode as low as 10.5 mA (3 V/ Tx with 5 dBm). This enables portable applications to be powered by a single Li-cell for smaller designs with extended lifetime.

    The new transceivers' system performance demonstrates high sensitivity in ASK (e.g. -116.5 dBm at 2.4 kBaud) and FSK mode (e.g. -109.5 dBm at 2.4 kBaud), a PAE of nearly 40%, adjustable output power of up to +10 dBm for long-distance operation, a high selectivity and a high blocking plus low intermodulation due to the receiver module's low-IF architecture. Due to the transmitter module's closed-loop Fractional-N synthesizer, the transceiver features high PLL bandwidth and excellent isolation between PLL and PA.

    Theft of vehicles with current PEG car access systems can be carried out by extending the RF transmission with the help of two repeaters to gain unauthorized system access (known as a relay attack). The additional full duplex mode of Atmel's new transceiver ICs helps to effectively prevent relay attacks, since the system trying to attack the RF car access system needs to receive and transmit signals on the same frequency at the same time.

    This high level system integration results in a small number of external components needed in the transceiver module.

    Samples of the new full-duplex RF transceiver ICs ATA5823/ATA5824 in small QFN48 packages are available now. Pricing starts at 4.75 US$ (10 k).

      ASK = Amplitude Shift Keying
      FSK = Frequency Shift Keying
      IF = Intermediate Frequency
      PA = Power Amplifier
      PAE = Power-Added Efficiency
      PEG = Passive Entry Go
      PLL = Phase-Locked Loop
      RKE = Remote Keyless Entry
      TPMS = Tire Pressure Monitoring Systems

    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.


    Product information on Atmel's new full-duplex RF transceiver ICs ATA5823/ATA5824 may be retrieved at: (ATA5823) and (ATA5824)

@@start.t1@@      Press Contacts
      Dr. Susanne van Clewe, Marcom Manager Communications and Automotive
      Phone: +49-7131-67-2081, Email:
      Clive Over, Director of Press Relations - USA and Asia
      Phone: +1-408-451-2855, Email:
      Veronique Sablereau, Corporate Communications Manager - Europe
      Phone: +33-1-30-60-70-68, Fax: +49-7131-67-2423, Email:

    Web site:

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Dr. Susanne van Clewe, Marcom Manager Communications and  Automotive
Products, +49-7131-67-2081, or, or
Clive Over, Director of Press Relations - USA and Asia,
+1-408-451-2855, or, or Veronique Sablereau,
Corporate Communications Manager - Europe, +33-1-30 60-70-68, or fax,
+49-7131-67-2423, or, all of Atmel Corporation

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