ATA5291 PEPS Driver and Immobilizer Base Station SUMMARY DATASHEET General Features ● Integrated PEPS driver and transponder immobilizer base station ● Internal precision oscillator for carrier generation ● IC power supply voltage from 6V to 28V for PEPS operation ● IC power supply voltage from 4V to 28V for immobilizer operation ● Fast SPI interface (2Mbit/s) for data access and configuration ● Transparent data input and data output pins ● Data transmission and control buffers ● Flexible commands set with LOOP and CALL capability allowing for programmable polling mode without the need to re-load the data buffer. This mode does not require any host controller interaction. ● Flexible GPIO pin for control of peripherals independent of host ● Very low power-down current consumption ● QFN 77-48 with wettable flanks ● LF carrier frequency 125kHz PEPS Driver Features ● 4 integrated PEPS drivers with programmable current up to 1A peak adjustable in 18 steps ● High accuracy PEPS drive current thanks to ±3% internal reference voltage ● Output driver stages are protected against electrical and thermal overload ● Integrated multiplexer to control 8 coils (4 internal and 4 external switches) ● Ability to support antennas with series capacitor far from or close to the IC while retaining all diagnostic capabilities ● Programmable carrier shaping (sinus, square wave, waveform from wavetable) ● On-off keying (OOK) modulation at continuous wave (CW) frequency /16, /32, /64 This is a summary document. The complete document is available under NDA. For more information, please contact your local Atmel sales office. ● Integrated boost converter with external boost transistor and current sense resistor for high LF-drive level 9374AS-RKE-11/15 ● Ability to connect two outputs to one coil with full 2A peak current capability ● Ability to drive two coils with 1A peak each at the same time ● Internal current measurement mode without external measurement resistor (R1 in application schematic) to increase isolation between coils Immobilizer Base Station Features ● High in-band receiver sensitivity of 7mVpp at tap point with tap voltage of 100Vpp ● Immobilizer driver with sinusoidal output signal for low harmonics ● Narrowband direct conversion digitized receiver for high noise immunity ● 64-byte immobilizer RX buffer to relieve real-time load from host ● Ability to operate with a separated immobilizer coil or with a coil shared between immobilizer and PEPS driver ● Immobilizer antenna current of up to 290mA peak ● Support of uplink/downlink of full duplex transponders (load modulation, physical layer) 2 ATA5291 [SUMMARY DATASHEET] 9374AS–RKE–11/15 1. General Description The Atmel® ATA5291 is an integrated circuit combining a LF coil driver for passive entry/passive start (PEPS) and a base station. It can drive up to eight low-frequency antennas (i.e., coils) to provide a wake-up and initialization channel to the key fob. The immobilizer base station block can share one antenna coil with the LF coil driver block thus reducing the total antenna count and related overall system cost. Pinning AGND_REF BCS BSENSE VSHF1 A0N A1N A2N A3N VSHF2 VSHS B0N B0P Figure 2-1. Pinning, QFN48 Package A0ED 1 48 47 46 45 44 43 42 41 40 39 38 37 36 A1ED 2 35 VS A2ED 3 34 AVCC33 A3ED 4 33 AGND VDS1 5 32 VTX A0P 6 31 RXIN A1P 7 30 AVCC18 A2P 8 29 DVCC A3P 9 28 DGND A0EN 10 27 VIF A1EN 11 26 CLKOUT A2EN 12 25 13 14 15 16 17 18 19 20 21 22 23 24 BCG GPIO1 IRQ BCNT MACT SCLK MISO MOSI NCS NRES TESTEN VCP VDS2 Atmel ATA5291 A3EN 2. ATA5291 [SUMMARY DATASHEET] 9374AS–RKE–11/15 3 3. Ordering Information Extended Type Number Package ATA5291-GJQW 4. Remarks 7mm 7mm, Pb-free, 4k, taped and reeled, wettable flanks QFN48 Packaging Information Top View D 48 1 E PIN 1 ID technical drawings according to DIN specifications 12 Dimensions in mm A Side View A3 A1 Two Step Singulation process Partially Plated Surface Bottom View D2 13 24 25 12 COMMON DIMENSIONS E2 (Unit of Measure = mm) 1 A 36 48 37 e MIN NOM MAX A 0.8 0.85 0.9 A1 A3 0 0.16 0.035 0.21 0.05 0.26 D 6.9 7 7.1 D2 5.5 5.6 5.7 E 6.9 7 7.1 E2 5.5 5.6 5.7 L 0.35 0.4 0.45 b e 0.2 0.25 0.5 0.3 NOTE L A (10:1) Symbol b 10/18/13 TITLE Package Drawing Contact: [email protected] 4 Package: VQFN_7x7_48L Exposed pad 5.6x5.6 ATA5291 [SUMMARY DATASHEET] 9374AS–RKE–11/15 GPC DRAWING NO. REV. 6.543-5130.03-4 1 5. Appendix A: Acronyms and Abbreviations BPLM – Binary pulse length modulation NRZ – Non-return-to-zero modulation OOK – On-off keying PEPS – Passive entry/passive start WUP – Wake-up pattern 6. 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. History 9374AS-RKE-11/15 Initial release ATA5291 [SUMMARY DATASHEET] 9374AS–RKE–11/15 5 XXXXXX Atmel Corporation 1600 Technology Drive, San Jose, CA 95110 USA T: (+1)(408) 441.0311 F: (+1)(408) 436.4200 | www.atmel.com © 2015 Atmel Corporation. / Rev.: 9374AS–RKE–11/15 Atmel®, Atmel logo and combinations thereof, Enabling Unlimited Possibilities®, and others are registered trademarks or trademarks of Atmel Corporation in U.S. and other countries. Other terms and product names may be trademarks of others. DISCLAIMER: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. 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