ATSAMD21J17A-AU

Overview

The ATSAMD21J17A-AU is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 128KB of in-system programmable Flash memory and 16KB of SRAM. The device is housed in a 64-TQFP package with 52 I/O lines. It supports a supply voltage range of 1.62V to 3.6V and operates within a temperature range of -40°C to 85°C. Key peripherals include USB, DMA, multiple communication interfaces, and analog converters.

Feature Summary

• Integrated Functional Safety (FuSa) capabilities for safety-critical applications
• Built-in USB 2.0 Full-Speed Device interface
• Direct Memory Access (DMA) controller for efficient data transfer
• Multiple low-power modes including Idle, Run, and Standby

Applications

• Industrial control systems requiring functional safety compliance
• USB-enabled embedded devices and peripherals
• Smart home appliances and consumer electronics
• Medical equipment with safety certification requirements

Procurement Notes

Verify the specific suffix 'AU' corresponds to the lead-free RoHS-compliant version in the 64-TQFP package. Confirm that the Functional Safety (FuSa) designation aligns with your project's safety integrity level requirements. Check the latest datasheet revision for any errata or design changes affecting peripheral functionality or electrical characteristics before finalizing procurement.

Selection Notes

Select this model when 128KB of program memory and 52 general-purpose I/O pins are required in a compact surface-mount package. It is suitable for designs needing integrated USB connectivity without external transceivers. Consider alternative SAM D21 variants if higher clock speeds, larger memory capacities, or different pin counts better match the system constraints.

Part Context

This component belongs to the Microchip SAM D21 family, which targets cost-sensitive 32-bit embedded applications. The series emphasizes low power consumption and ease of use through a simplified instruction set. The ATSAMD21J17A variant specifically adds functional safety features compared to standard commercial versions, making it distinct within the broader SAM D21 portfolio.

Replacement Considerations

ATSAMD21J17D-AU: Same memory and pinout but potentially different qualification status.

FAQ

Does the ATSAMD21J17A-AU support hardware-based functional safety mechanisms?

Yes, it includes Functional Safety (FuSa) features such as memory protection units and self-test capabilities designed to meet safety standards.

What is the maximum operating speed of the Cortex-M0+ core in this device?

The core can operate at a maximum frequency of 48 MHz.