ATSAMR21E18A-MU Overview
The ATSAMR21E18A-MU is a highly integrated microcontroller combining a 32-bit ARM Cortex-M0+ core with a low-power 2.4 GHz IEEE 802.15.4-compliant transceiver. Designed for wireless communication applications, this device offers a compact, energy-efficient solution ideal for Internet of Things (IoT) nodes, smart sensors, and industrial wireless connectivity. Its integration of RF and microcontroller functions reduces board space and simplifies design complexity, making it a valuable component for engineers seeking reliable, low-power wireless performance. For detailed technical information and support, visit IC Manufacturer.
ATSAMR21E18A-MU Technical Specifications
| Parameter | Specification |
|---|---|
| Core | 32-bit ARM Cortex-M0+ |
| Operating Frequency | Up to 48 MHz |
| Flash Memory | 256 KB |
| SRAM | 32 KB |
| Wireless Standard | IEEE 802.15.4 (2.4 GHz) |
| Package | QFN 5×5 mm, 32 pins |
| Power Supply Voltage | 1.8 V to 3.6 V |
| Temperature Range | -40??C to +85??C |
| Operating Current (RX) | ~14.5 mA |
| Operating Current (TX) | ~15.5 mA at 0 dBm output power |
ATSAMR21E18A-MU Key Features
- Integrated ARM Cortex-M0+ core: Enables efficient processing capabilities suitable for embedded wireless applications, enhancing real-time responsiveness.
- Built-in 2.4 GHz IEEE 802.15.4 transceiver: Supports standard wireless communication protocols such as ZigBee and Thread, facilitating seamless device connectivity in mesh networks.
- Low power consumption: Optimized current profiles for both receive and transmit modes extend battery life in portable or remote sensing applications.
- Compact 5×5 mm QFN package: Saves PCB space, allowing integration into size-constrained designs without compromising performance.
- Wide operating voltage range: Supports 1.8 V to 3.6 V supply, providing design flexibility for various power management schemes.
- Robust memory resources: 256 KB Flash and 32 KB SRAM enable complex firmware and protocol stacks to operate efficiently on-chip.
- Comprehensive temperature support: Ensures reliable operation across industrial temperature ranges from -40??C to +85??C.
ATSAMR21E18A-MU Advantages vs Typical Alternatives
This device offers an integrated approach combining a powerful Cortex-M0+ core with a dedicated 2.4 GHz transceiver, resulting in lower system complexity and reduced BOM cost compared to separate RF modules and microcontrollers. Its low power consumption and compact form factor enhance battery life and enable dense system integration. Additionally, support for standard wireless protocols ensures interoperability, making it a reliable choice for industrial and IoT wireless applications.
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Typical Applications
- Wireless sensor networks where low power and reliable 2.4 GHz communication are critical for long-term deployment and data integrity.
- Smart home devices such as lighting controls and security sensors requiring compact, energy-efficient wireless microcontrollers.
- Industrial automation nodes that demand robust wireless connectivity with extended temperature range tolerance.
- Asset tracking systems leveraging IEEE 802.15.4 compliant communication for mesh network scalability and reliability.
ATSAMR21E18A-MU Brand Info
The ATSAMR21E18A-MU is part of a family of wireless microcontrollers designed by a leading semiconductor manufacturer specializing in embedded connectivity solutions. This product exemplifies the brand??s commitment to integrating advanced low-power microcontrollers with wireless transceivers, enabling developers to deliver compact, reliable, and scalable wireless applications across industrial, commercial, and consumer markets.
FAQ
What wireless protocols are supported by this microcontroller?
The device supports IEEE 802.15.4 standard at 2.4 GHz, which is the foundation for protocols such as ZigBee, Thread, and other proprietary low-power wireless communication schemes. This ensures broad compatibility in mesh networking applications.
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What is the power consumption during wireless transmission and reception?
Typical current consumption is approximately 15.5 mA during transmission at 0 dBm output power and around 14.5 mA during reception. These low current levels help extend battery life in portable applications without compromising wireless performance.
What are the memory resources available for application development?
This microcontroller provides 256 KB of on-chip Flash memory for storing firmware and application code, along with 32 KB of SRAM for runtime data and stack usage. This memory configuration supports complex wireless protocol stacks and user applications.
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Can this device operate in harsh environmental conditions?
Yes, it is rated for an industrial temperature range of -40??C to +85??C, making it suitable for deployment in challenging environments where temperature variations are significant.
What package options are available for this product?
The device is available in a compact 5×5 mm Quad Flat No-lead (QFN) package with 32 pins. This small footprint facilitates integration into designs where PCB space is limited and helps reduce overall system size.
