Microchip Technology Tariff Inquiry

ATSAMR21E16A-MU

ATSAMR21E16A-MU Description

The ATSAMR21E16A-MU from Microchip Technology is a highly integrated RF transceiver + MCU solution designed for 2.4GHz ISM band applications. Combining a 32-bit ARM® Cortex®-M0+ microcontroller with a robust RF transceiver, it delivers 250kbps max data rate and 4dBm output power, making it ideal for low-power wireless communication. Operating within a 1.8V–3.6V supply range, it features 64kB Flash and 8kB SRAM for embedded applications. Packaged in a compact 32-VQFN form factor, it supports surface-mount assembly and complies with RoHS3 and REACH environmental standards.

ATSAMR21E16A-MU Features

• Low Power Consumption: Optimized for battery-operated devices with 11.3mA–11.8mA (RX) and 7.2mA–13.8mA (TX) current draw.
• Rich Connectivity: Integrated I2C, SPI, UART, USART, and USB interfaces for flexible system integration.
• High-Performance RF: Supports 2.4GHz ISM band with 4dBm transmit power and 250kbps data rate.
• Enhanced Memory: 64kB Flash + 8kB SRAM for firmware and data storage.
• Robust GPIO: 16 general-purpose I/O pins for peripheral interfacing.
• Industrial Reliability: MSL3 (168 hours) moisture sensitivity ensures durability in harsh environments.

ATSAMR21E16A-MU Applications

• IoT Edge Devices: Sensor nodes, smart meters, and wearable health monitors.
• Wireless Control Systems: Remote actuators, industrial automation, and home automation (Zigbee/Thread).
• Low-Power Mesh Networks: IEEE 802.15.4-based networks for scalable IoT deployments.
• Consumer Electronics: Wireless keyboards, mice, and gaming peripherals.
• Asset Tracking: RFID and real-time location systems (RTLS) with low-energy beacons.

Conclusion of ATSAMR21E16A-MU

The ATSAMR21E16A-MU stands out as a power-efficient, high-integration solution for wireless embedded systems. Its combination of RF performance, MCU capability, and low-power operation makes it superior to discrete transceiver-MCU pairings. Ideal for IoT, industrial, and consumer applications, it reduces BOM complexity while meeting stringent ROHS3 and REACH compliance. Engineers benefit from Microchip’s SMART SAM R21 ecosystem, ensuring scalability and long-term availability.