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ATA5279 Datasheet(PDF) 1 Page - ATMEL Corporation |
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ATA5279 Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 39 page Features • Six Connections for Series-resonant LF Coil Antennas • Drives up to 1A Peak Current on the First Three Channels and up to 700mA Peak on the Second Three, Largely Independent of the Battery Voltage • On-off-keyed Data Modulation with up to 5.7kbit/s (Manchester Coded) • Sinusoidal-like Output Signal for Superior EMC Behavior • 20 Selectable Steps for Current Regulation for Field Strength Measurement (RSSI) • Output Driver Stages are Protected Against Electrical and Thermal Overload • Very Low Power-down Current Consumption • SPI Interface for Easy Microcontroller Bus Connection • LF Data Buffer to Minimize Microcontroller’s CPU Load During a Data Transmission • Small Outline Package: QFN48, 7mm × 7mm 1. Description The Atmel® ATA5279 is an LF coil driver IC intended for passive entry/-go (PEG) sys- tems. It can drive up to six low-frequency-antennas (i.e., coils) to provide a wake-up and initialization channel to the key fob. Figure 1-1. Block Diagram Oscillator Internal Supply POR, BG, UV/OV Control Logic Communication Protocol Handling DC DC Boost Controller LF Data Buffer SPI PGND VDS A4P A6P A5P A1P A3P A2P A1N A3N A2N VL VCC IRQ BCNT MACT NRES VIF MISO MOSI S_CLK S_CS OSCO OSCI VS RGND VSHS CINT AGND Reference Sine Wave Generator Driver Stage Control Zero Cross Detector Return Line Driver HP 1-3 Integrator Sample and Hold LP 1-3 A4N A6N VSHF A5N Antenna Driver for Multiple Antennas Atmel ATA5279 9125I–RKE–09/10 |
Similar Part No. - ATA5279_10 |
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Similar Description - ATA5279_10 |
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