Description
The SAM D21/DA1 is a series of low-power microcontrollers using the
32-bit Arm® Cortex®-M0+ processor, and ranging from 32-pins to
64-pins with up to 256 KB Flash and 32 KB of SRAM. The SAM D21/DA1
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 signaling,
and support for capacitive touch button, slider, and wheel user
interfaces.
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
