ATA5702F1000M-WDQW

ATA5702F1000M-WDQW Datasheet


Remote Start<br>• Like RKE but RF is typically 2-way<br>• Fob sends RF to car to &quot;start engine&quot;<br>• Car replies with RF to fob &quot;engine running&quot;<br>• Importand Design Considerations<br>• Very long range, &gt; 300m, requires high RF link budget<br>• RF Link budget = f TX power, RX sensitivity, antenna efficiencies<br>• Higher TX power by managing RF &quot;on&quot; time averaging<br>• Higher RX sensitivity with narrower IF bandwidth &amp; lower data rate<br>• Requires tight frequency control &amp; compensation temp/voltage/lot

Part Datasheet
ATA5702F1000M-WDQW ATA5702F1000M-WDQW ATA5702F1000M-WDQW (pdf)
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Car Access

PEPS, RKE, AES Immobilizer

Atmel Car Access System Solutions
• launched the first dedicated transmitter PLL U2741B for Remote Keyless Entry RKE applications in 1997
• Atmel is a leading car access supplier and delivered already more than 250 Mio ICs in this application
• Strong relationships to the key players in the automotive market

Car Access Basic of RKE

Remote Start
• Like RKE but RF is typically 2-way
• Fob sends RF to car to "start engine"
• Car replies with RF to fob "engine running"
• Importand Design Considerations
• Very long range, > 300m, requires high RF link budget
• RF Link budget = f TX power, RX sensitivity, antenna efficiencies
• Higher TX power by managing RF "on" time averaging
• Higher RX sensitivity with narrower IF bandwidth & lower data rate
• Requires tight frequency control & compensation temp/voltage/lot

Car Access Basic of PEPS

Passive Entry / Passive Start
• From outside the vehicle Touch car door PE
• From inside the vehicle Press "start" button on dashboard PS
• LF from car awakens fob LF downlink
• Fob measures field strength vectors & sends info to vehicle
• Fob orientation is arbitrary - must measure x, y, & z axis 3D
• Fob localized Allow "Unlock" if outside confirm if 2-way RF
• Fob localized Allow "Start" if inside confirm if 2-way RF
• Important system design considerations:
• LF field strength regulation over across voltage/temp/coil variation
• Accurate LF field strength measurement
• High LF field sensitivity
outside detection
outside detection
outside detection
inside detection
trunk separation
outside rear detection
outside detection

Wide Range Of Car Access Solutions

RKE + Immo PKE + Immo

Optional

Single chip key solution, best in class performance ATA5774C

Best in class receiver, with minimum external component, no external IF filter, supports self polling ATA5724C / ATA5781

Single chip key solution, 128 bit AES H/W encryption engine, up to 12.5dBm output power, works down to 1.9V ATA5795C

Best in class receiver, with minimum external component, no external IF filter, supports self polling ATA5724C / ATA5781

Immo transponder with built in coil, AES standard ATA5580

Single chip MCU, Immo + 3D LF Wake up ATA5791

Single chip LF driver + Immo Basestation ATA5291

Immo transponder with built in coil, AES standard ATA5580

RF transceiver for smart key and 2 way BCM basestation ATA5831

Smart RF receiver with Flash+MCU ATA5782
More datasheets: 2934 | 1475 | 3180 | 74F10SJX | 74F10SJ | 74F10SC | 74F10SCX | B65691K6500K048 | CLP6S-MKW-CYAA0133 | CLP6S-WKW-CYBA0153


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Datasheet ID: ATA5702F1000M-WDQW 519337