ATSAMD21J17A-AFT

Overview

The ATSAMD21J17A-AFT 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 supports a supply voltage range of 1.6V to 3.6V and includes an internal oscillator. It provides 52 general-purpose I/O pins and integrates multiple communication interfaces including USB, SPI, I2C, UART/USART, and LINbus. Analog capabilities consist of twenty 12-bit ADC channels and one 10-bit DAC. The component is housed in a 64-TQFP package with exposed pad.

Feature Summary

• Integrated USB Full-Speed interface for direct connectivity without external transceivers
• Functional Safety (FuSa) design compliant with ISO 26262 standards
• Direct Memory Access controller for efficient data transfer between peripherals and memory
• Advanced analog subsystem with high-resolution ADCs and precision comparators

Applications

• Automotive body control modules requiring functional safety certification
• Industrial motor drives utilizing PWM and DMA for precise control
• Portable medical devices leveraging low-power operation and USB connectivity
• Consumer electronics integrating touch sensing via the Peripheral Touch Controller

Procurement Notes

Verify the specific suffix 'AFT' confirms the 64-TQFP package and industrial temperature grade during sourcing. Confirm RoHS compliance status as per current Microchip documentation. Ensure the supplier provides valid traceability for automotive-grade components if FuSa claims are required for the final system design.

Selection Notes

Select this variant when a TQFP footprint is preferred over QFN or BGA options within the SAM D21 family. It is suitable for designs requiring robust thermal dissipation through the exposed pad while maintaining surface-mount assembly compatibility. Consider pin count availability against application peripheral requirements before choosing over lower-pin-count siblings.

Part Context

This component belongs to the SAM D21J series, which targets applications demanding functional safety features alongside standard microcontroller performance. It shares the same core architecture and peripheral set as other SAM D21 variants but offers specific memory sizes and package configurations tailored for diverse form factors.

Replacement Considerations

Cross-reference with ATSAMD21J17A-AU for QFN packaging or ATSAMD21J17D-AFT for extended temperature ranges. Verify pinout compatibility and software register mapping before substituting with other SAM D21 family members.