Features

▪ SAMD21G18A Processor

▪ ARM Cortex M0+ at up to 48 MHz

▪ 256KB Flash

▪ 32KB SRAM

▪ Power On Reset POR and Brown Out Detection

(BOD)

▪ Peripherals

▪ 12 channel DMA

▪ 12 channel event system

▪ 5x 16 bit Timer/Counter

▪ 3x 24 bit timer/counter with extended

functions

▪ 32 bit RTC

▪ Watchdog Timer

▪ CRC-32 generator

▪ Full speed Host/Device USB with 8 end

points

▪ 6x SERCOM (USART, I 2 C, SPI, LIN)

▪ Two channel I 2 S

▪ 12 bit 350ksps ADC (up to 16 bit with

oversampling)

▪ 10 bit 350ksps DAC

▪ External Interrupt Controller (up to 16 lines)

▪ Murata CMWX1ZZABZ LORA Module

▪ STMicro STM32L0 series ARM Cortex M0+ 32 bit

MCU

▪ 192Kbytes Flash

▪ +20dBm RF TX Output Power

▪ Semtech SX1276 Radio

▪ W25Q16 SPI Flash memory

▪ 16Mbit SPI Flash

▪ 4mA active current, <1μA Power-down (typ.)

▪ More than 100,000 erase/program cycles

▪ More than 20-year data retention

▪ ATECC508 Crypto Chip

▪ Cryptographic co-processor with secure

hardware based key storage

▪ Protected storage for up to 16 keys, certificates

or data

▪ ECDH: FIPS SP800-56A Elliptic Curve

Diffie-Hellman

▪ ECDSA: FIPS186-3 Elliptic Curve Digital Signature

Algorithm

▪ NIST standard P256 elliptic curve support

▪ SHA-256 & HMAC hash including off-chip context

save/restore

▪ BQ24125L I2C Controlled USB/Adapter Charger

▪ 92 Charge Efficiency at 2 A, 90 at 4 A

▪ Autonomous Battery Charging

▪ 2.5-A Fast Charging