SAM D21 Family
Low-Power, 32-bit Cortex-M0+ MCU with Advanced Analog
and PWM
Features
Processor
ARM Cortex -M0+ CPU running at up to 48 MHz
Single-cycle hardware multiplier
Micro Trace Buffer (MTB)
Memories
32/64/128/256 KB in-system self-programmable Flash
4/8/16/32 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 Stand-by 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
Three 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
32-bit Real Time Counter (RTC) with clock/calendar function
Watchdog Timer (WDT)
Datasheet Complete DS40001882C-page 1
2018 Microchip Technology Inc. SAM D21 Family
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
2
I C up to 3.4 MHz
SPI
LIN slave
2
One two-channel Inter-IC Sound (I S) 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)
256-Channel capacitive touch and proximity sensing
I/O
Up to 52 programmable I/O pins
Qualification
AEC-Q100 Grade 1 (-40C to 125C)
Drop-in compatible with SAM D20
Packages
64-pin TQFP, QFN, UFBGA
48-pin TQFP, QFN, WLCSP
32-pin TQFP, QFN, WLCSP
Operating Voltage
1.62V 3.63V
DS40001882C-page 2
Datasheet Complete
2018 Microchip Technology Inc.