ATMEGA2561R231-MU

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The ATMEGA2561R231-MU RF Transceiver IC is a universal and versatile low-cost radio-frequency (RF) companion chip geared for short range RF communication in various applications. It is a highly programmable single-chip low-power transceiver that operates in the frequency range of 868 MHz/915 MHz (ASK) and is optimized for short range non-line-of-sight communications.

Overview

The ATMEGA2561R231-MU integrates crystal-controlled transmitter and receiver, easy-to-program memory and logic cores, and hardware-assisted link quality control. It also supports on-chip wakeup and sleep functions to conserve battery life. The low power consumption makes this IC ideal for applications running on onboard batteries or solar power. This IC is suitable for applications requiring a compact, low-power, and low-cost transceiver with a broad range of coverage and features.

Features

The ATMEGA2561R231-MU has a wide host of features for its size, making it a highly capable and flexible RF IC. It features four operation modes -- transmit, receive, idle, and sleep. It is equipped with a powerful ARM Cortex-M3 processor for robust system performance. It supports AES-128 and AES-256 encryption which provides both security and high-speed data transfer. It also utilizes industry-standard GFSK modulation for reliable transmission for reliable data transfer. Furthermore, it has built-in link quality checks such as link quality control and packet integrity checking.

Applications

The ATMEGA2561R231-MU is suitable for a variety of low-power and short-range communication applications. It is commonly used in home automation, security systems, remote control devices, medical diagnostics, industrial automation, and telemetry systems. Its low-power and low-cost design make it especially attractive for applications that rely on onboard batteries or solar power. It can even be used in low power IoT applications where long battery life is required.

Working Principle

At its core, the ATMEGA2561R231-MU utilizes crystal-controlled frequency synthesis and GFSK modulation for reliable communication. Its transmitter and receiver are each tuned to a single frequency, which allows for improved frequency stability and data rate control. In order to improve the frequency stability of the RF IC, the oscillator is adjusted through an external crystal or ceramic resonator. In order to maximize the chip’s range, the transmitter power level is automatically adjusted to match the current data rate. The ATMEGA2561R231-MU also supports data packet integrity checking, which ensures that the data is accurately sent and received.

Conclusion

The ATMEGA2561R231-MU is a low-cost and low-power RF transceiver IC that is suitable for a range of low-power and short-range applications. Its ARM Cortex-M3 processor supports high-speed control loops for reliable data transfer. It supports AES128/256 encryption for enhanced security, as well as link quality checks such as link quality control and data packet integrity checking. It is an ideal choice for any application requiring reliable communication in the frequency range of 868 MHz/915 MHz (ASK).

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