ATSAML21J17B-AUT

Overview

The ATSAML21J17B-AUT is a 32-bit microcontroller from the SAM L21J series, featuring an ARM Cortex-M0+ core. It integrates 128KB of Flash memory and 16KB of SRAM. The device operates at a maximum frequency of 48MHz with a supply voltage range of 1.62V to 3.63V. It includes 51 I/O pins, 20-channel 12-bit ADCs, and two 12-bit DACs. Connectivity options include I2C, LINbus, SPI, USART, and USB interfaces. The component is housed in a 64-TQFP package and supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Functional Safety (FuSa) certified for automotive applications
• Integrated advanced analog peripherals including multiple ADCs and DACs
• Supports low-power operation modes for energy-efficient designs
• Includes hardware security features for code protection

Applications

• Automotive body electronics and safety systems
• Industrial control and monitoring devices
• Consumer appliances requiring functional safety compliance
• Battery-powered IoT nodes with secure communication needs

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature grade. Confirm RoHS and REACH compliance status with the manufacturer before finalizing procurement. Check for any recent Product Change Notifications regarding assembly sites or material changes. Ensure development tools are compatible with the SAM L21 family architecture.

Selection Notes

Select this model when Functional Safety certification is required alongside moderate memory capacity. Compare against ATSAMD21 variants if FuSa is not mandatory but pin count differs. Consider the TQFP package for easier prototyping compared to QFN alternatives. Evaluate power consumption requirements against the available sleep modes defined in the datasheet.

Part Context

This component belongs to the Microchip SAM L21J family, which is specifically designed for functional safety applications. It shares architectural similarities with the SAM D21 series but adds safety mechanisms. The J variant denotes specific memory and peripheral configurations within the broader L21 ecosystem.

Replacement Considerations

ATSAMD21J17A-AU offers similar performance without FuSa certification. ATSAML21J17B-MUT provides the same electrical specifications in a QFN package.