Features

Processor
- ARM Cortex-M0+ CPU running at up to 32MHz
  - Single-cycle hardware multiplier
  - Micro Trace Buffer
  - Memory Protection Unit (MPU)

Memories
- 64/128/256KB in-system self-programmable Flash
- 2/4/8KB Flash Read-While-Write section
- 8/16/32KB SRAM Main Memory

System
- Power-on reset (POR) and programmable brown-out detection (BOD)
- Internal and external clock options
- External Interrupt Controller (EIC)
  - 16 external interrupts that can use any I/O-Pin
  - One non-maskable interrupt on one I/O-Pin
- Two-pin Serial Wire Debug (SWD)

Low Power
- Idle, Standby, Backup, and Off sleep modes
- SleepWalking peripherals
- Battery backup support
- Two runtime selectable power/performance levels
- Embedded Buck/LDO regulator supporting on-the-fly selection
- Active mode: <50µA/MHz
- Standby with full retention, RTC and LCD = 3.47µA
  - 2.1µs wake-up time
- Standby with full retention and RTC: 1.87µA
  - 2.1µs wake-up time
- Ultra low power Backup mode with RTC: 490nA
  - 90µs wake-up time

Peripherals
- Segment LCD controller
  - Up to 8 (4) common and 40 (44) segment terminals to drive 320 (176) segments
  - Static, ½, 1/3, ¼ bias
  - Internal charge pump able to generate VLCD higher than VDDIO
- 16-channel Direct Memory Access Controller (DMAC)
- 8-channel Event System
- Up to four 16-bit Timer/Counters (TC), each configurable as:
  - 16-bit TC with two compare/capture channels
  - 8-bit TC with two compare/capture channels
  - 32-bit TC with two compare/capture channels, by using two TCs
- One 24-bit Timer/Counters for Control (TCC), with extended functions:
  - Four compare channels with optional complementary output
  - Generation of synchronized pulse width modulation (PWM) pattern across port pins
  - Deterministic fault protection, fast decay and configurable dead-time between complementary output
  - Dithering that increase resolution with up to 5 bit and reduce quantization error
- Frequency Meter
- 32-bit Real Time Counter (RTC) with clock/calendar function
  - 8x32-bit Backup Register
  - Tamper Detection
- Watchdog Timer (WDT)
- CRC-32 generator
- One full-speed (12Mbps) Universal Serial Bus (USB) 2.0 Device
  - Eight endpoints
  - Crystal less operation
- Up to six Serial Communication Interfaces (SERCOM), each configurable as:
  - USART with full-duplex and single-wire half-duplex configuration
  - ISO7816
  - I²C up to 3.4MHz¹
  - SPI
- One AES encryption engine
- One True Random Generator (TRNG)
- One Configurable Custom Logic (CCL)
- One 12-bit, 1MSPS Analog-to-Digital Converter (ADC) with up to 20 channels
  - Differential and single-ended input
  - Oversampling and decimation in hardware to support 13-, 14-, 15-, or 16-bit resolution
- Two Analog Comparators (AC) with window compare function
- Peripheral Touch Controller (PTC)
  - Up to 256-Channel capacitive touch sensing
    - Maximum Mutual-Cap up to 16x16 channels
    - Maximum Self-Cap up to 24 channels
  - Wake-up on touch in standby mode

Oscillators
- 32.768kHz crystal oscillator (XOSC32K)
- 0.4-32MHz crystal oscillator (XOSC)
- 32.768kHz ultra-low-power internal oscillator (OSCULP32K)
- 16/12/8/4MHz high-accuracy internal oscillator (OSC16M)
- 48MHz Digital Frequency Locked Loop (DFLL48M)
- 96MHz Fractional Digital Phased Locked Loop (FDPLL96M)
I/O
- Up to 82 programmable I/O pins
- Up to 52 segment LCD pins can be used as GPIO/GPI
- Up to 5 wake-up pins with optional debouncing
- Up to 5 tamper input pins
- 1 tamper output pin

Pin and code compatible with SAM D and SAM L Cortex-M0+ Families²
Packages
- 100-pin TQFP, UFBGA
- 64-pin TQFP, QFN
- 49-pin WLCSP
- 48-pin TQFP, QFN

Operating Voltage
- 1.62V – 3.63V