ata5780 ATMEL Corporation, ata5780 Datasheet
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ata5780 Summary of contents
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... Appropriate for Application Systems Compliant with EN 300 220 and FCC 15 = 3.6V and T = 85°C S UHF ASK/FSK Receiver Atmel ATA5780 Summary Preliminary NOTE: This is a summary document. The complete document is available under NDA. For more information, please contact your local Atmel sales office. 9207BS– ...
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... Remote Control System, e.g. garage door openers • Smart RF Applications Because of its flexibility the receiver can combine up to three different application types in the autonomous self-polling setting. Atmel ATA5780 [Preliminary] 2 ® ATA5780 is a universal, highly integrated, low-power UHF ASK/FSK single chip ® microcontroller core. 9207BS–RKE–01/11 ...
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... RFIN_LB 2 RFIN_HB 3 SPDT_RX 4 SPDT_ANT Atmel ATA5780 5 N.C. 6 N.C. 7 N. ® ATA5780 UHF receiver is highly sensitive. Its high image rejection and outstand- 24 MOSI 23 SCK NSS MISO CLK_OUT 22 MOSI Microcontroller 21 DGND SCK 20 DVCC NPWRON5 TRPB 19 TMDO_CLK NPWRON4 18 NPWRON3 TMDO 17 NPWRON2 TRPA ...
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... SPI command. 1.3.5 Channel Statistic In order to accelerate the communication in multi-channeling the Atmel ATA5780 offers a fea- ture defined as channel statistic. If this feature is activated, the IC will find the best channel having the least interference within the three frequency channels and select the best channel as the first operating frequency during transmission ...
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... Atmel does not contain a free usable microcontroller and is operated using a ROM-only programmed ® AVR the transceiver and can also be customized via EEPROM settings. 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] Type Function Analog LNA input for low-band frequency range (< 500MHz) Analog LNA input for high-band frequency range (> ...
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... System (TPMS), and the Remote Start (RS). For the RKE up to three operating frequencies can be used. Because of the flexibility of the IC the wake-up criteria and polling cycle for each application can be defined separately in the EEPROM. Atmel ATA5780 [Preliminary] 6 ® ATA5780 features two idle modes. The first is IDLE_RC which only 9207BS–RKE–01/11 ...
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... Coding Schemes and Modulation Option The Atmel receiver ATA5780 works with Manchester and NRZ coding for system design flexi- bility. application. Because of its flexibility, system designers can configure the Atmel receiver ATA5780 using another polarity of the Manchester coding. This can be set in the EEPROM configuration. Figure 3-1. 3.4 Receiving (RX) Mode The receiver’ ...
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... NRZ coding the supported data rate range is between 1kBps and 40kBps. One of the important parameters for system sensitivity is the data rate tolerances. Atmel ATA5780 supports the receiving of signal with a data rate tolerance ±10% without any sensitivity loss. The guaranteed sensitivity loss is just 1dB for data rate tolerance ±20%. ...
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... IDx_CTRL control registers. where the ID could be positioned in a data stream. Figure 3-4. Possible ID Position in a Data Stream Preburst + Preburst 1. Data Startbit (8 Bit) Byte (8 Bit) 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] Principle of the Simple Telegram Start Preamble Bit ...
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... Overview The use of polling mode in the Atmel ATA5780 reduces current consumption. In this mode the receiver path alternates between active and sleep mode. During the short active mode the device scans for the valid telegram. During a relative short active period the wake-up (WUP) logic verifies the incoming signal by checking the telegram for a valid wake-up pattern or bit check ...
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... This can be determined by reading the best channel status information (FLAG3) and starting transmission on the corresponding channel. This minimizes the response time for passive entry go applications. 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] The TPM and RS channel are not considered in the channel statistic! 11 ...
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... The crystal oscillator and the fractional-N PLL generate the reference signal for the mixer which down-converts the incoming signal to the IF frequency of approx. 251kHz. The Atmel ATA5780 covers the worldwide ISM frequency ranges of 315MHz, 434MHz, 868MHz, and 915MHz. Two completely different low noise amplifiers (LNA) were designed for the low- and high-frequency band ...
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... XTO and less accurate capacitors in the loop filter mode the receiver is sensitive to signals coming from one corresponding transmitter (RKE1 TPM or RS channel). RX mode is started after power preselected in the EEPROM can be started with an SPI command. 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] 13 ...
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... The Manchester data rate range is: 0.25Kbit to 80Kbits. The demodulator provides DPLL-based data clock recovery for optimized sampling positions that tolerates single-bit errors. Atmel ATA5780 [Preliminary] 14 Simplified Demodulator and Clock Recovery Block for One Path ASK Demod ...
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... Further filtering and decimation is done for signal paths A and 2-stage filter followed by a data slicer. The first stage contains 2 down-sampling. The down-sampling ratio moving average filter whose length is derived from the DMDRx.DMAx value. 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] nd order CIC architecture with programmable DMDRx.DMDNx . In addition, the signal is processed ...
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... RKE). Each buffer has its own interrupt for AVR read out overwritten by the following byte. A 32-byte receive buffer is available in the receiver and can be used for data reception. When starting RX mode the RX buffer pointer is set to the initial values (reset). Atmel ATA5780 [Preliminary] 16 detect) recovery) ® ...
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... Because the damping in this case is located in the front of the LNA, overloading can be reduced. Of course this overload protection of 15dB leads to a sensitivity loss of 15dB, but it still enables data reception in the presence of modulated blockers 15dB above the 1dB compres- sion point (ICP1dB = –35dBm). 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] 17 ...
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... Load transitions up to 3mA do not trigger the AVCC low and reset indicators. This is necessary to allow timely activation of all front-end circuits. At supply voltages above 2.1V AVCC load transients of more than 8mA are allowed without triggering the reset circuit. Atmel ATA5780 [Preliminary] 18 Power Supply Management Overview L V ...
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... Watchdog reset. The MCU is reset when the watchdog is enabled and the watchdog timer period expires. The RF front end has a separate reset circuit for monitoring AVCC voltage. 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] ® are immediately reset to their initial state when a reset source Figure 4-4 on page 20 ...
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... Shorter pulses do not necessarily generate a reset. When the applied signal reaches the reset threshold volt- age - VRST - on its positive edge, the delay counter starts the MCU after the time-out period - t TOUT Atmel ATA5780 [Preliminary] 20 DATA BUS Control Calibration ...
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... Extended Type Number ATA5780-PNQW 6. Package Information 32 1 PIN Bottom View 10:1 b Package Drawing Contact: packagedrawings@atmel.com 9207BS–RKE–01/11 Atmel ATA5780 [Preliminary] Package QFN32 Top View D Side View TITLE Package: VQFN_5x5_32L Exposed pad 3.6x3.6 Remarks 5mm 5mm PB free ...
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... Revision History Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. 9207BS-RKE-01/11 Atmel ATA5780 [Preliminary] 22 History Section 5 “Ordering Information” on page 21 changed 9207BS–RKE–01/11 ...
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... Atmel Munich GmbH Business Campus Parkring 4 D-85748 Garching b. Munich GERMANY Tel: (+49) 89-31970-0 Fax: (+49) 89-3194621 ® and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 JAPAN Tel: (+81) (3) 3523-3551 Fax: (+81) (3) 3523-7581 ...