ATSAML21G17B-MNT

Overview

The ATSAML21G17B-MNT is a 32-bit microcontroller from the SAM L21 series, featuring an ARM Cortex-M0+ core operating at 48MHz. It integrates 128KB of in-system self-programmable Flash and 16KB of SRAM. The device supports a supply voltage range of 1.62V to 3.63V and operates within a temperature range of -40°C to 85°C. It is housed in a 48-VFQFN package with exposed pad.

Feature Summary

• Ultra-low-power architecture consuming under 35 µA/MHz in active mode and 200nA in Sleep mode.
• Includes Full Speed USB host and device capabilities with Event System and Sleepwalking support.
• Features advanced analog peripherals including 12-bit ADC, dual 12-bit DAC, operational amplifiers, and capacitive touch sensing.
• Supports functional safety applications through integrated security features like AES encryption and TRNG.

Applications

• Battery-powered IoT devices requiring low power consumption
• USB-enabled consumer electronics and peripherals
• Industrial control systems with analog signal processing needs
• Smart home appliances with touch interface requirements

Procurement Notes

Verify the specific suffix 'MNT' against the official Microchip datasheet to confirm the 48-QFN package and commercial temperature grade. Ensure compatibility with existing PCB footprints for the VFQFN-48 form factor. Cross-reference the part number with the latest SAM L21 family errata sheet for any known silicon revisions or design constraints before finalizing procurement.

Selection Notes

Select this component when a balance of moderate memory capacity and rich analog/USB connectivity is required in a compact footprint. It is suitable for designs needing USB functionality without external transceivers. Compare against ATSAMD21 variants if industrial temperature ranges (-40°C to 105°C) are mandatory, as this model is rated for commercial temperatures. Consider pin count limitations relative to I/O requirements.

Part Context

This MCU belongs to the SAM L21 family, which emphasizes ultra-low power performance and advanced analog features. It shares the Cortex-M0+ core architecture with other SAM D21 and SAM L21 series devices but offers distinct peripheral sets optimized for battery-operated applications. The G17 variant specifically denotes the 128KB Flash configuration within this lineup.

Replacement Considerations

ATSAMD21G17L-MNT: Offers similar specifications but includes Functional Safety (FuSa) certification and an extended industrial temperature range (-40°C to 105°C). Verify package compatibility and software library support differences between the standard SAM L21 and FuSa-certified SAM D21 families.