ATSAMR21G18A-MU

SAMR21 系列 256 kB 闪存 32 kB SRAM 48 MHz 32-位 微控制器 - QFN-48EP

The is a 32-bit SMART ARM-based Wireless Microcontroller with 256kB flash and 32kB SRAM memory. IEEE 802.15.4 compliant single chip combines an ARM® Cortex®-M0+ based 32-bit microcontroller 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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Internal and external clock options

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Digital phase locked loop FDPLL96M

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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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Low power - Idle and standby sleep modes

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Peripherals - 12-channel Direct Memory Access Controller DMAC