ATSAMR21E18A-MU

The ATSAMR21E18A-MU 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 I?C, 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.