A low-power, high-performance Microchip's ARM® Cortex®-M0+ based flash microcontroller, the ATSAMD20E16 is ideal for a wide range of home automation, consumer, metering, and industrial applications. It features:

• 64KB of flash and 8KB of SRAM
• Up to 48MHz operating frequency
• Four serial communication modules (SERCOM) configurable as UART/USART, SPI or I²C, six 16-bit timer/counters, 32-bit Real Time clock and calendar, 10 PWM channels, one 10-channel 12-bit ADC, one 10-bit DAC
• Support for up to 60 touch channels
• 1.62V to 3.63V power supply
• Easy pin migration to SAMD20G and SAMD20J devices
• Supported by Atmel Studio, ASF and the SAM D20 Xplained Pro kit

Processor

• ARM Cortex-M0+ CPU running at up to 48MHz
• Single-cycle hardware multiplier

Memories

• 64KB in-system self-programmable Flash
• 8KB SRAM memory

System

• Power-on reset (POR) and brown-out detection (BOD)
• Internal and external clock options with 48MHdigital frequency locked loop (DFLL48M) and 48MHto 96MHz
• fractional 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

Low power

• Idle and standby sleep modes
• SleepWalking peripherals

Peripherals

• 8-channel event system
• Five 16-bit timer/counters (TC), configurable as either:
  • One 16-bit TC with compare/capture channels
  • One 8-bit TC with compare/capture channels
  • One 32-bit TC with compare/capture channels, by using two TCs
• 32-bit real time counter (RTC) with clock/calendar function
• Watchdog timer (WDT)
• CRC-32 generator
• Up to six serial communication interfaces (SERCOM), each configurable to operate as either:
  • USART with full-duplex and single-wire half-duplex configuration
  • I2C up to 40kHz
  • SPI
• One 12-bit, 350ksps analog-to-digital converter (ADC) with 10 channels
  • Differential and single-ended input
  • 1/2x to 16x programmable gain stage
  • Automatic offset and gain error compensation
  • Oversampling and decimation in hardware to support 13-, 14-, 15- or 16-bit resolution
• 10-bit, 350ksps digital-to-analog converter (DAC)
• Two analog comparators (AC) with window compare function
• Peripheral Touch Controller (PTC)
  • 256-channel capacitive touch and proximity sensing

I/O

• 26 GPIO pins

Packages

• 32-pin TQFP, QFN

Operating voltage

• 1.62V to 3.63V

Power Consumption

• Down to 70µA/MHz in active mode
• Down to 8µA running the peripheral Touch Controller

Temperature range

• –40 to +105°C