ATSAMD21G18A Description

The Atmel ® | SMART ™ SAM D21 is a series of low-power microcontrollers using the 32-bit ARM ® Cortex ® -

M0+ processor, and ranging from 32- to 64-pins with up to 256KB Flash and 32KB of SRAM. The SAM D21 devices operate at a maximum frequency of 48MHz 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, Atmel Event System for inter-peripheral signaling, and support for capacitive touch button, slider and wheel user interfaces.

ATSAMD21G18A Features

• Processor

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

• Single-cycle hardware multiplier

• Micro Trace Buffer (MTB)

• Memories

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

– 4/8/16/32KB SRAM Memory

• System

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

– Internal and external clock options with 48MHz Digital Frequency Locked Loop (DFLL48M) and 48MHz to 96MHz Fractional Digital Phase Locked Loop (FDPLL96M)

– External Interrupt Controller (EIC)

– 16 external interrupts

– One non-maskable interrupt

– Two-pin Serial Wire Debug (SWD) programming, test and debugging interface

• Low Power

– Idle and standby sleep modes

– SleepWalking peripherals

ATSAMD21G18A 系列型号

ATSAMD21G18A 系列型号解析

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