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SAMR21G - Wireless Microcontroller

Download the SAMR21G datasheet PDF. This datasheet also covers the SAMR21E variant, as both devices belong to the same wireless microcontroller family and are provided as variant models within a single manufacturer datasheet.

General Description

The Atmel® | SMART™ SAM R21 is a series of low-power microcontrollers using the 32-bit ARM® Cortex®-M0+ processor and an integrated ultra-low power 2.4GHz ISM band transceiver.

Key Features

  • In-system programmable Flash, optional 512KB serial Flash,12-channel direct memory access (DMA) controller, 12-channel Event System, programmable interrupt controller, up to 28 programmable I/O pins, ultra-low power 2.4GHz ISM band transceiver with a data rate of 250kb/s, 32-bit real-time clock and calendar, three 16-bit Timer/Counters (TC) and three 16-bit Timer/Counters for Control (TCC), where each TC can be configured to perform frequency and waveform generation, accurate program execution.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SAMR21E-ATMEL.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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SAMRH707 Radiation-Hardened 32-bit Microcontroller Microchip
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Other Datasheets by Atmel (now Microchip Technology)

Part Number Description
SAMR21E Wireless Microcontroller
SAM3A SMART ARM-based MCU
SAM3A4C SMART ARM-based MCU
SAM3A8C SMART ARM-based MCU
SAM3N SMART ARM-based MCU

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
SMART Atmel SAM R21E / SAM R21G SMART ARM-Based Wireless Microcontroller DATASHEET Description The Atmel® | SMART™ SAM R21 is a series of low-power microcontrollers using the 32-bit ARM® Cortex®-M0+ processor and an integrated ultra-low power 2.4GHz ISM band transceiver. SAM R21 devices are available in 32- and 48-pin packages with up to 256KB Flash, 32KB of SRAM and are operating at a maximum frequency of 48MHz and reach 2.46 Coremark/MHz. They are designed for simple and intuitive migration with identical peripheral modules, hex compatible code, identical linear address map and pin compatible migration paths between all devices in the product series.