ATSAMD21G17A-AU

Overview

The ATSAMD21G17A-AU is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM D21G Functional Safety (FuSa) series. It features 128KB of flash memory and 16KB of RAM, operating at a maximum frequency of 48MHz. The device supports a supply voltage range of 1.62V to 3.6V and includes 38 I/O pins in a 48-TQFP package. Key peripherals include USB, SPI, I2C, UART/USART, LINbus, DMA, PWM, and an ADC with 14 channels of 12-bit resolution.

Feature Summary

• Integrated functional safety capabilities compliant with automotive standards for reliable operation in critical applications.
• Built-in full-speed USB device interface supporting communication protocols without external transceivers.
• Advanced analog subsystem featuring multiple high-resolution ADC channels and a DAC for signal processing.
• Flexible serial communication options including multiple SERCOM modules configurable as SPI, I2C, or UART.

Applications

• Automotive infotainment systems requiring functional safety certification
• Industrial control devices utilizing LINbus and CAN interfaces
• Portable consumer electronics powered by low-voltage battery sources
• Smart sensors integrating analog-to-digital conversion and digital communication

Procurement Notes

Verify the specific suffix 'AU' confirms the lead-free and RoHS-compliant tape-and-reel or tray packaging variant intended for surface-mount assembly. Confirm the functional safety qualification status matches your system requirements, as this designation indicates adherence to specific reliability standards. Ensure the 48-TQFP footprint dimensions align with your PCB layout constraints before finalizing procurement orders.

Selection Notes

Choose this component when design requirements demand integrated functional safety features alongside standard connectivity options like USB and LINbus. It is suitable for applications needing moderate code storage capacity with efficient power consumption characteristics typical of Cortex-M0+ architectures. Consider alternative pin counts within the SAM D21 family if more general-purpose I/O lines are required for complex peripheral interfacing.

Part Context

This part belongs to the SAM D21G series, which extends the standard SAM D21 line with enhanced functional safety features. It shares the same core architecture and peripheral set as other SAM D21 variants but includes additional diagnostic and safety mechanisms. The G-series designation specifically highlights its suitability for environments where fault detection and safe state management are mandatory operational requirements.

Replacement Considerations

Direct substitutes within the same package and pinout include ATSAMD21G16A-AU, though it offers reduced memory capacity. For higher performance needs, consider the ATSAMD21J17A-AU, which provides increased I/O count in a larger 64-TQFP package. Verify that any replacement maintains the required functional safety certification level if applicable to your specific application domain.