ATSAML22G18A-UUT

Overview

The ATSAML22G18A-UUT is a 32-bit microcontroller from the Microchip SAM L22G series, featuring an ARM Cortex-M0+ core operating at up to 32 MHz. It integrates 256 KB of flash memory and 32 KB of SRAM within a 48-VFQFN exposed pad package. The device supports a supply voltage range of 1.62 V to 3.63 V and includes USB connectivity alongside standard communication interfaces such as I2C, SPI, and UART/USART. It offers 36 general-purpose I/O lines and ten 12-bit ADC channels.

Feature Summary

• Integrates a low-power ARM Cortex-M0+ processor with DMA capabilities for efficient data handling.
• Includes a dedicated Ultra-Low-Power (ULP) coprocessor designed to extend battery life in sleep modes.
• Features advanced analog peripherals including multiple 12-bit analog-to-digital converters.
• Supports direct USB connectivity without requiring external transceivers.

Applications

• Battery-powered wearable electronics
• USB-enabled consumer devices
• Industrial sensor nodes
• Portable medical instruments

Procurement Notes

Verify the specific suffix 'UUT' against official Microchip documentation to confirm the 48-VFQFN package variant, as other suffixes like 'MUT' or 'AUT' denote different physical packages. Ensure compatibility with required operating temperatures and voltage levels before finalizing component selection for production.

Selection Notes

Select this component when a compact surface-mount solution with integrated USB functionality is required. The 48-pin QFN package suits space-constrained designs. Consider the 32 MHz clock speed and 256 KB memory capacity against application processing demands and code storage requirements.

Part Context

This part belongs to the SAM L22G family of ultra-low-power microcontrollers. It shares architectural similarities with other SAM L22 variants but is distinguished by its specific pin count and package configuration. The G-series typically targets applications needing moderate I/O density with robust analog and connectivity features.

Replacement Considerations

ATSAML22G18A-MUT: Identical core specifications but utilizes a 48-QFN package instead of VFQFN. ATSAML22G18A-AUT: Identical core specifications but utilizes a 48-TQFP package. Verify footprint compatibility for any cross-package substitution.