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ATSAML21G18B-AUT

MCHPATSAML21G18B-AUT

Microchip Technology
ARM Microcontrollers - MCU ARM Cortex-M0+ 128KBFlash 24KB SRAM
219 in stock
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Overview

The ATSAML21G18B-AUT is an ultra-low-power microcontroller based on the 32-bit ARM Cortex-M0+ processor, operating at frequencies up to 48 MHz. It features 256KB of Flash memory and 32KB of SRAM, specifically engineered for energy-constrained applications requiring advanced power management.

Why Choose This Part

This MCU stands out for its sophisticated power management system, including five power domains and the SleepWalking peripheral technology that allows peripherals to react to events without waking the CPU. It offers a rich set of serial interfaces and a dedicated Peripheral Touch Controller, reducing external component count for user interface designs.

Applications

Battery-Powered Wearables
Ideal for fitness trackers and smartwatches due to its sub-microamp sleep modes and efficient active processing.
Environmental Sensing
Used in remote loT sensor nodes where long battery life is critical and periodic data transmission is required.
Capacitive Touch Interfaces
Leverages the integrated Peripheral Touch Controller (PTC) to support buttons, sliders, and wheels with high moisture tolerance.
Portable Medical Devices
Suitable for handheld diagnostic tools that require reliable processing in a compact, low-energy footprint.

Getting Started

Engineers should start with the SAM L21 Xplained Pro evaluation kit for rapid prototyping. Development is fully supported by the Microchip Studio IDE and MPLAB X, utilizing the Advanced Software Framework (ASF) or Harmony for driver configuration.

Part of SAM Microcontrollers family » SAML21G

SAML21G Family

Part NumberDifferenceStock
ATSAML21G18B-MUT QFN-48 · 256KB Flash 11,755
ATSAML21G16B-AUT 6B-AUT 1,448

Also Consider

ATSAMD21G18A-AUT MCHPMicrochip Technology - A compatible alternative if ultra-low power consumption is less critical than broad ecosystem support and availability.