ATSAMD21G18A-AF Datasheet PDF - Microchip

The ATSAMD21G18A-AF is a SMART SAMD21 series 32-bit Low-power Microcontroller based on the high-performance ARM Cortex-M0+ RISC processor. It operates at a maximum speed of 48MHz and features 256kB of flash memory and 32kB of SRAM. Peripherals include six serial communication modules (SERCOM) configurable as UART/USART, three 16-bit timers/counters, 32-bit real-time clock and calendar, 20 PWM channels, one 14-channel 12-bit ADC, one 10-bit DAC, full speed USB device and embedded host and support for up to 120 touch channels. The device operates from 1.62 to 3.63V.

● ARM Cortex-M0+ CPU running at up to 48MHz

● Single-cycle hardware multiplier

● Micro trace buffer (MTB)

● Power-on reset (POR) and brown-out detection (BOD)

● External interrupt controller (EIC)

● 16 External interrupts

● One non-maskable interrupt

● Two-pin serial wire debug (SWD) programming, test and debugging interface

● Idle and standby sleep modes

● SleepWalking peripherals

● 12-channel Direct memory access controller (DMAC)

● 12-channel Event system

● 32-bit Real-time counter (RTC) with clock/calendar function

● Watchdog timer (WDT)

● CRC-32 generator

● One full-speed (12Mbps) Universal serial bus (USB) 2.0 interface

● Peripheral touch controller (PTC)

● Easy pin migration to SAMD21G and SAMD21J devices