EmbeddedRelated.com
    Parts    SAM Microcontrollers Family    SAML21G    ATSAML21G18B-MUT
ATSAML21G18B-MUT

MCHPATSAML21G18B-MUT

Microchip Technology
ARM® Cortex®-M0+ SAM L21G, Functional Safety (FuSa) Microcontroller IC 32-Bit 48MHz 256KB (256K x 8) FLASH 48-QFN (7x7)
Active11,755 in stock
Datasheet Digi-Key Compare Prices

Overview

The ATSAML21G18B-MUT is an ultra-low power 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at frequencies up to 48MHz. This device features 256KB of Flash and 32KB of RAM, specifically designed for energy-sensitive applications requiring functional safety (FuSa) features. It provides a wide operating voltage range from 1.62V to 3.63V and includes integrated USB connectivity and sophisticated power management.

Why Choose This Part

This MCU excels in power efficiency, consuming down to 35 uA/MHz in active mode and featuring a true battery-backed RTC. The inclusion of functional safety support and a high-speed USB interface provides a versatile platform for both industrial and consumer designs. It offers a rich peripheral set including 37 I/O pins and multiple SERCOM modules for flexible serial communication.

Applications

Battery-Powered IoT Nodes
Utilizes sophisticated sleep modes and low-leakage fabrication to extend the runtime of remote sensors and wireless endpoints.
Industrial Safety Controllers
Implements functional safety features for monitoring systems where high reliability and 32-bit processing are required.
Smart Metering
Provides accurate timing and data processing with minimal current draw for utility meters and energy monitoring devices.
Portable Medical Devices
Small 48-QFN footprint and low power consumption make it suitable for handheld diagnostic and monitoring tools.

Key Specifications

Speed 48MHz
RAM Size 32K x 8
Core Size 32-Bit
Peripherals DMA, POR, PWM, WDT
Connectivity I2C, LINbus, SCI, SPI, UART/USART, USB
Mounting Type Surface Mount
Number of I/O 37
Core Processor ARM Cortex-M0+
Package / Case 48-VFQFN Exposed Pad
Data Converters A/D 14x12b; D/A 2x12b
Oscillator Type Internal
Program Memory Size 256KB (256K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-QFN (7x7)
Voltage - Supply (Vcc/Vdd) 1.62V ~ 3.63V

Getting Started

Develop using Microchip Studio or MPLAB X IDE with the XC32 compiler for optimized code. Hardware evaluation is best performed on the SAM L21 Xplained Pro evaluation kit, which features an on-board debugger and standardized headers. Software development is streamlined through the Atmel Start web tool or Harmony 3 framework for peripheral configuration.

Part of SAM Microcontrollers family » SAML21G

SAML21G Family

Part NumberDifferenceStock
ATSAML21G16B-AUT 128KB Flash 1,448
ATSAML21G18B-AUT 128KB Flash 219

Also Consider

ATSAMD21G18A-MUT MCHPMicrochip Technology - A more general-purpose Cortex-M0+ alternative if the specialized ultra-low power and FuSa features of the L-series are not required.
ATSAML21E18B-MUT MCHPMicrochip Technology - A pin-compatible version in a smaller 32-pin package for designs with lower I/O requirements.