ATSAMR21G18A-MU Overview
The ATSAMR21G18A-MU is a highly integrated microcontroller designed specifically for wireless connectivity applications. It combines an ultra-low-power ARM Cortex-M0+ core with a robust 2.4 GHz IEEE 802.15.4-compliant transceiver, enabling efficient and reliable communication for IoT and industrial automation systems. With its compact 7×7 mm QFN package and rich peripheral set, it supports flexible embedded networking solutions while optimizing power consumption. The device is ideal for engineers seeking a balance between performance, low power, and seamless RF integration. For more detailed information, visit the IC Manufacturer.
ATSAMR21G18A-MU Technical Specifications
| Parameter | Specification |
|---|---|
| Core | 32-bit ARM Cortex-M0+ |
| Operating Frequency | 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Wireless Protocol | IEEE 802.15.4 (2.4 GHz) |
| Package | 7×7 mm 48-pin QFN |
| Operating Voltage | 1.8 V to 3.6 V |
| Operating Temperature | -40??C to +85??C |
| Peripheral Interfaces | USART, SPI, I2C, ADC, DAC, Timer/Counter |
| Power Consumption | Down to 18 ??A/MHz active mode |
ATSAMR21G18A-MU Key Features
- Integrated ARM Cortex-M0+ Core: Provides efficient processing power at 48 MHz, enabling responsive control and low-latency operations in embedded wireless applications.
- IEEE 802.15.4 2.4 GHz Transceiver: Supports reliable low-power wireless communication, critical for mesh networking and IoT device interoperability.
- Low Power Consumption: Optimized for energy efficiency, the device achieves minimal current draw in active and sleep modes, extending battery life in portable systems.
- Rich Peripheral Set: Includes multiple communication interfaces (USART, SPI, I2C), analog converters, and timers, facilitating flexible sensor integration and control tasks.
- Compact Package: The 7×7 mm QFN footprint allows for high-density PCB designs, making it suitable for space-constrained industrial and consumer devices.
ATSAMR21G18A-MU Advantages vs Typical Alternatives
This device offers a unique combination of integrated low-power ARM processing and a certified 2.4 GHz transceiver, reducing the need for external RF components. Its efficient power management and comprehensive peripherals provide superior reliability and performance compared to typical standalone microcontrollers or separate RF modules. This integration streamlines design complexity and enhances system robustness, making it an optimal choice for wireless embedded applications.
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Typical Applications
- Wireless sensor networks for industrial monitoring, enabling low-power, reliable data collection across multiple nodes in challenging environments.
- Home automation systems requiring compact, energy-efficient microcontrollers with integrated RF for device communication and control.
- Smart metering devices that benefit from low power consumption and secure wireless connectivity for remote data transmission.
- Wearable electronics needing a combination of small form factor, integrated wireless capability, and efficient processing.
ATSAMR21G18A-MU Brand Info
The ATSAMR21G18A-MU is part of a renowned family of microcontrollers recognized for combining low-power ARM Cortex-M0+ cores with integrated wireless transceivers. This product line targets embedded applications requiring seamless connectivity and high integration to simplify development and reduce overall system cost. The device is supported by a comprehensive ecosystem including development tools, software stacks, and technical documentation, ensuring engineers can accelerate time-to-market for their wireless products.
FAQ
What wireless standards does the ATSAMR21G18A-MU support?
This device supports the IEEE 802.15.4 standard operating at 2.4 GHz, which is commonly used in low-power wireless communication protocols such as Zigbee and Thread. This ensures compatibility with a wide range of IoT and mesh networking solutions.
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What is the power consumption profile of this microcontroller?
The microcontroller is optimized for low power, consuming as little as 18 ??A per MHz in active mode, with additional power-saving modes available during idle or sleep states. This makes it suitable for battery-operated and energy-sensitive applications.
Which peripheral interfaces are available on this device?
The device includes multiple communication interfaces such as USART, SPI, and I2C for flexible connectivity with sensors and external modules. It also features analog components like ADC and DAC, plus timers and counters for precise control tasks.
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What package options are offered for this microcontroller?
The device is supplied in a compact 48-pin QFN package measuring 7×7 mm. This package supports high-density PCB layouts while ensuring efficient thermal performance and reliable soldering.
Can this microcontroller operate over a wide temperature range?
Yes, it is rated for operation between -40??C and +85??C, making it suitable for industrial and outdoor applications where temperature extremes are common.
