Microchip ATSAMD21E17A-AU ARM Cortex Microcontroller, 48MHz, 128 kB Flash, 32-Pin TQFP

The Microchip low power microcontrollers using the 32-bit Arm® Cortex®-M0+ processor, and32-pinswith up to 256 KB Flash and 32 KB of SRAM. It operates at a maximum frequency of 48 MHz 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. All devices include intelligent and flexible peripherals, Event System for inter-peripheral signalling, and support for capacitive touch button, slider, and wheel user interfaces.

External interrupt controller (EIC)
16 external interrupts
One non maskable interrupt (NMI)
Two pin serial wire debug (SWD) programming, test and debugging interface
Low power consumption
Idle and Standby Sleep modes
SleepWalking peripherals
12 Channel Direct memory access controller (DMAC)
12 Channel Event System
Up to five 16-bit trimer/counters
One 16-bit TC with two compare/capture channels
One 8 bit TC with two compare/capture channels
One 32-bit TC with two compare/capture channels, by using two TCs

Datasheet - ATSAMD21E17A-AU