ATSAMR21E18A-MU

ATMEL  ATSAMR21E18A-MU  微控制器, 32位, SAM R21系列, ARM 皮质-M0+, 48 MHz, 256 KB, 32 KB, 32 引脚, QFN

The is an IEEE 802.15.4 compliant 32-bit Single-chip Microcontroller based on ARM Cortex-M0+ and best-in-class 2.4GHz RF transceiver. It offers an excellent RF performance, with a link budget of 103dBm while consuming 50% less active current than existing offerings. The device features IEEE 802.15.4 MAC hardware accelerators and automatic transmission modes, wake-on-radio, offers twelve-channel direct memory access DMA controller, up to four configurable SERCOM modules for I²C, SPI and USART and a 128-bit AES crypto engine. The device features further blocks like a peripheral touch controller PTC, full-speed USB device and embedded Host and hardware components to support RF distance measurements. To complement that set the SAM R21 also supports external power amplifiers and antenna diversity.

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ARM Cortex-M0+ CPU running at up to 48MHz

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Single-cycle hardware multiplier

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Micro trace buffer MTB

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Power-on reset POR and brown-out detection BOD

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External interrupt controller EIC

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Up to 15 external interrupts

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One non-maskable interrupt

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Two-pin serial wire debug SWD programming, test and debugging interface

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Idle and standby sleep modes

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SleepWalking peripherals

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12-channel Direct memory access controller DMAC

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12-channel Event system

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Integrated ultra low power transceiver for 2.4GHz ISM band

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32-bit Real-time counter RTC with clock/calendar function

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Watchdog timer WDT

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CRC-32 generator

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One full-speed 12Mbps Universal serial bus USB 2.0 interface

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Two analog comparators AC with window compare function

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Peripheral touch controller PTC