ATSAML21J17B-MNT

Overview

The ATSAML21J17B-MNT is a 32-bit ARM Cortex-M0+ microcontroller from the SAM L21 series, designed for functional safety applications. It features 128KB of flash memory and 16KB of SRAM, operating at a maximum frequency of 48MHz. The device supports a supply voltage range of 1.6V to 3.6V and includes 51 I/O pins. It integrates multiple communication interfaces including USB, SPI, I2C, UART/USART, and LINbus. The component utilizes a 64-pin QFN package with an industrial temperature rating of -40°C to +85°C.

Feature Summary

• Integrated functional safety capabilities compliant with ISO 26262 standards for automotive applications.
• Includes advanced analog peripherals such as 20-channel 12-bit ADCs and dual 12-bit DACs.
• Supports low-power operation modes suitable for battery-powered embedded systems.
• Features hardware security mechanisms including secure boot and cryptographic accelerators.

Applications

• Automotive body control modules requiring functional safety certification.
• Industrial sensor nodes utilizing high-resolution analog-to-digital conversion.
• Consumer devices requiring secure data storage and processing.
• Battery-operated IoT endpoints needing efficient power management.

Procurement Notes

Verify the specific suffix MNT corresponds to the 64-QFN package and industrial temperature grade during sourcing. Confirm RoHS compliance status through official Microchip documentation prior to integration. Ensure ESD handling protocols are followed due to the exposed pad thermal design. Cross-reference the datasheet revision to validate pinout compatibility with existing PCB layouts.

Selection Notes

Select this model when functional safety (FuSa) requirements are mandatory within the SAM L21 family. Compare against ATSAML21J18 variants if higher memory capacity is needed. Consider ATSAML21G series for cost-sensitive applications with reduced peripheral counts. Verify that the 1.6V minimum supply voltage aligns with the system's power architecture.

Part Context

This component belongs to the SAM L21 family, which focuses on ultra-low power performance combined with functional safety features. It shares the Cortex-M0+ core architecture with other members but distinguishes itself through specific memory configurations and safety certifications. The J17 designation indicates the 128KB flash variant within the J-series lineup.

Replacement Considerations

ATSAML21J17B-MUT serves as a tape-and-reel alternative in the same package. ATSAML21J18B-MNT offers increased memory while maintaining identical pinouts. ATSAML21G17B-MNT provides a lower-cost option with fewer peripherals.