ATSAMD21G17D-AFT

Overview

The ATSAMD21G17D-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 includes an internal oscillator and supports a supply voltage range of 1.62V to 3.63V. It provides 38 general-purpose I/O pins and integrates multiple communication interfaces including I2C, SPI, UART/USART, USB, and LINbus. Analog capabilities consist of 14-channel 12-bit ADCs and one 10-bit DAC. The component operates within a temperature range of -40°C to 85°C and is housed in a 48-TQFP package.

Feature Summary

• Functional Safety (FuSa) compliant design for safety-critical applications
• Integrated USB full-speed controller with DMA support
• Advanced analog subsystem with multiple ADC channels and DAC
• Low-power operation with multiple sleep modes and wake-up sources

Applications

• Industrial control systems requiring functional safety compliance
• Medical devices needing reliable data acquisition and processing
• Automotive interior electronics and body control modules
• Smart home appliances with connectivity requirements

Procurement Notes

Verify the specific suffix D indicates the automotive-grade or extended specification variant if applicable, though datasheets often group G17 variants. Confirm the 48-TQFP package availability matches your PCB footprint. Check for RoHS and REACH compliance status as per Microchip's current environmental declarations. Ensure the Functional Safety (FuSa) qualification aligns with your system's safety integrity level requirements before finalizing procurement.

Selection Notes

Select this model when 128KB Flash and 16KB RAM are required alongside USB connectivity. The G17 designation typically denotes specific memory and peripheral configurations within the SAM D21G family. Compare against ATSAMD21G17A-AU for TQFP packages with potentially different temperature grades or certifications. Consider the ATSAMD21G17D-MUT if a QFN package is preferred for space-constrained designs. Verify that the 48MHz clock speed meets your real-time processing needs.

Part Context

This component belongs to the SAM D21G series, which focuses on functional safety applications. It shares the Cortex-M0+ architecture with other SAM D21 models but offers specific memory sizes and peripheral sets tailored for industrial and automotive use. The D suffix often relates to specific manufacturing or qualification batches within the product line.

Replacement Considerations

ATSAMD21G17A-AU: Similar specifications in TQFP-48 package; verify temperature grade and FuSa certification equivalence. ATSAMD21G17D-MUT: Identical electrical characteristics but in QFN-48 package; requires PCB layout adaptation.