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Atmel ATA5781 [Summary DATASHEET]

9286BS–RKE–06/13

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Supported data rate in buffered mode 0.5Kbit/s to 80Kbit/s (120Kbit/s NRZ)

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Supports pattern-based wake-up and start of frame identification

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Flexible service configuration concept with on-the-fly (OTF) modification (in IDLEMode) of SRAM service parameters

(data rate, …)

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Each service consists of

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One service-specific configuration part

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Three channel-specific configuration parts

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Three service configurations are located in EEPROM

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Two service configurations are located in SRAM and can be modified via SPI or embedded application software

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Digital RSSI with very high relative accuracy of ±1dB thanks to digitized IF processing

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Programmable clock output derived from crystal frequency

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1024byte EEPROM data memory for receiver configuration

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SPI interface for Rx data access and receiver configuration

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500Kbit SPI data rate for short periods on SPI bus and host controller

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On demand services (SPI or API) without polling or telegram reception

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Integrated temperature sensor

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Self check and calibration with temperature measurement

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Configurable EVENT signal indicates the status of the IC to an external microcontroller

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Automatic low-power channel polling

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Flexible polling configuration concerning timing, order and participating channels

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Fast reaction time

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Power-up (typical 1.5ms, OFFMode -> RXMode)

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Supports mixed ASK/FSK telegrams

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Non-byte aligned data reception

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Software customization

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Antenna diversity with external switch via GPIO control

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Antenna diversity with internal SPDT switch

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Supply voltage ranges 1.9V to 3.6V and 2.4V to 5.5V

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Temperature range –40°C to +105°C

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ESD protection at all pins (±4kV HBM, ±200V MM, ±750V FCDM)

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Small 5

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Backward RF matching compatibility with Atmel ATA5780N (RF redesign not needed)

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Suitable for applications governed by EN 300 220 and FCC part 15, title 47