The ATSAMD21J18A-MU is a low-power high-performance SMART ARM® Cortex®-M0+ based Flash Microcontroller with 256kB of flash and 32kB of SRAM memory. Six serial communication modules (SERCOM) configurable as UART/USART, SPI or I²C, five 16-bit timer/counters, 32-bit real-time clock and calendar, 24 PWM channels, one 20-channel 12-bit ADC, one 10-bit DAC. 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. All devices include intelligent and flexible peripherals, Atmel Event System for inter-peripheral signalling and support for capacitive touch button, slider and wheel user interfaces.
● Full speed USB device and embedded host
● Support for up to 256 touch channels
● Easy pin migration to SAMD21G and SAMD21J devices
● Supported by Atmel studio, the Atmel software framework and the SAM D21 Xplained Pro Kit
● Power-on reset (POR) and brown-out detection (BOD)
● Internal and external clock options
● Digital phase locked loop (FDPLL96M)
● External Interrupt Controller (EIC)
● 16 External interrupts
● One non-maskable interrupt
● Two-pin serial wire debug (SWD) programming, test and debugging interface
● Peripherals - 32-bit Real Time Counter (RTC) with clock/calendar function
● One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 interface
