ATSAML21J18B-MNT

Overview

The ATSAML21J18B-MNT is a Microchip Technology microcontroller from the SAML21 series, featuring an ARM Cortex-M0+ core. It integrates 256 kB of Flash program memory and 32 kB of SRAM data RAM. The device supports a maximum clock frequency of 48 MHz and operates within a supply voltage range of 1.62 V to 3.63 V. It provides 51 I/O lines and includes advanced analog peripherals such as a 12-bit ADC with 20 channels and a 12-bit DAC. Connectivity options include I2C, LIN, SPI, USART, and USB interfaces.

Feature Summary

• Integrates an ARM Cortex-M0+ processor core for efficient code execution.
• Includes advanced analog capabilities with high-resolution ADC and DAC modules.
• Supports multiple communication protocols including USB and standard serial interfaces.
• Features flexible clock management and event system for low-power operation.

Applications

• Battery-powered wearable devices requiring low power consumption
• Industrial control systems utilizing analog signal processing
• USB-enabled consumer electronics and peripheral devices

Procurement Notes

Verify the specific suffix MNT confirms the VQFN-64 package and industrial temperature range (-40°C to +85°C). Confirm RoHS compliance status through official datasheets. Check for moisture sensitivity labeling as indicated in product specifications. Ensure ordering quantities align with reel packaging requirements if applicable.

Selection Notes

Select this component when a compact VQFN-64 package is required alongside extensive analog input capabilities. The 20-channel ADC distinguishes it from variants with fewer channels. Consider the 48 MHz performance limit and 32 kB RAM size against application memory demands. Verify interface needs match the available I2C, SPI, USART, and USB controllers.

Part Context

This part belongs to the SAML21 family of low-power 32-bit microcontrollers designed for battery-operated applications. It shares architectural similarities with other SAML21 variants but differs in package type and pin count. The MNT suffix specifically denotes the VQFN-64 surface-mount package configuration.

Replacement Considerations

ATSAML21J18B-ANT (TQFP-64 package), ATSAML21J18B-MUT (VQFN-64, 10 ADC channels), ATSAML21J18B-AUT (TQFP-64, 10 ADC channels). Verify package compatibility and ADC channel counts before substitution.