ATSAMD21G18A-AU

Features

• Processor

– Arm®

 Cortex®

-M0+ CPU running at up to 48 MHz

• Single-cycle hardware multiplier

• Micro Trace Buffer (MTB)

• Memories

– 4/2/1/0.5 KB Read-While-Write (RWWEE) Flash section (not available on 256 KB devices)

– 256/128/64/32/16 KB in-system self-programmable Flash

– 32/16/8/4 KB SRAM Memory

• System

– Power-on Reset (POR) and Brown-out Detection (BOD)

– Internal and external clock options with 48 MHz Digital Frequency-Locked Loop (DFLL48M) and 48 MHz to

96 MHz Fractional Digital Phase-Locked Loop (FDPLL96M)

– 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

– Idle and Standby Sleep modes

– SleepWalking peripherals

• Peripherals

– 12-channel Direct Memory Access Controller (DMAC)

– 12-channel Event System

– Up to five 16-bit Timer/Counters (TC), configurable as either:

• 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

– Up to four 24-bit Timer/Counters for Control (TCC), with extended functions:

• Up to 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

– PWM Channels using TC and TCC peripherals:

• Up to eight PWM channels on each 24-bit TCC

• Up to two PWM channels on each 16-bit TCC

• Up to two PWM channels on each 16-bit TC

– 32-bit Real Time Counter (RTC) with clock/calendar function

– Watchdog Timer (WDT)

– CRC-32 generator

– One full-speed (12 Mbps) Universal Serial Bus (USB) 2.0 interface

• Embedded host and device function

• Eight endpoints

– 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 3.4 MHz

• SPI

• LIN client

– One two-channel Inter-IC Sound (I2S) interface

– One 12-bit, 350ksps Analog-to-Digital Converter (ADC) with up to 20 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, 350 ksps Digital-to-Analog Converter (DAC)

– Up to four Analog Comparators (AC) with Window Compare function

– Peripheral Touch Controller (PTC)

• Up to 256-Channel capacitive touch and proximity sensing

• I/O

– Up to 52 programmable I/O pins

• Qualification

– SAM D21 AEC-Q100 Grade 1 (-40°C to 125°C)

– SAM DA1 AEC-Q100 Grade 2 (-40C to 105C)

• Drop-in compatible with SAM D20

• Packages

– 64-pin TQFP, QFN, UFBGA

– 48-pin TQFP, QFN

– 45-pin WLCSP

– 35-pin WLCSP

– 32-pin TQFP, QFN

• Operating Voltage

– SAM D21: 1.62V – 3.63V

– SAM DA1: 2.7V - 3.63V

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