ATSAMD21G17A-UUT

Overview

The ATSAMD21G17A-UUT 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 in-system programmable flash memory and 16KB of SRAM. The device operates at a maximum frequency of 48MHz with an internal oscillator. It supports a supply voltage range of 1.62V to 3.6V and includes 38 general-purpose I/O pins. Connectivity options include USB, SPI, I2C, UART/USART, LINbus, and I2S. Analog capabilities consist of fourteen 12-bit ADC channels and one 10-bit DAC. Peripherals include DMA, PWM, WDT, and power management functions.

Feature Summary

• Integrated ARM Cortex-M0+ processor optimized for low-power embedded applications
• Functional Safety (FuSa) certification for safety-critical system design
• Comprehensive analog subsystem with multiple high-resolution ADCs and a DAC
• Built-in USB device interface supporting standard communication protocols

Applications

• Industrial control systems requiring functional safety compliance
• Portable battery-powered devices utilizing low-power operation modes
• USB-enabled peripheral controllers and host interfaces
• Smart sensor nodes with analog signal acquisition requirements

Procurement Notes

Verify the specific suffix 'UUT' against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing board layouts for the required footprint. Check for recent Product Change Notifications regarding assembly sites or material changes. Confirm that the Functional Safety qualification meets the specific integrity level required by your application standards before finalizing procurement.

Selection Notes

Select this component when a certified Functional Safety MCU is necessary for the project. The 128KB flash capacity suits complex firmware implementations. The 48MHz speed provides sufficient processing headroom for real-time tasks. Consider the 48-pin TQFP or QFN package availability if the UUT suffix denotes a specific form factor not listed in generic summaries. Evaluate power consumption profiles against the 1.62V to 3.6V operating range.

Part Context

This part belongs to the SAM D21G family, which extends the standard SAM D21 series with Functional Safety features. It shares architectural similarities with other Cortex-M0+ MCUs but distinguishes itself through FuSa qualifications. The G17 variant specifically denotes the 128KB flash configuration within this safety-oriented lineup, targeting markets where reliability and diagnostic coverage are critical.

Replacement Considerations

Direct substitutes include other SAM D21G variants with matching flash sizes, such as ATSAMD21G17A-AU or ATSAMD21G17A-MUT, provided the package pinout matches. Cross-family replacements like ATSAMD21J18 require careful review of I/O counts and voltage levels.