ATSAML22J18A-AUT

Overview

The ATSAML22J18A-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, belonging to the SAM L22J series. It features 256KB of in-system programmable flash memory and 32KB of SRAM. The device operates at a maximum clock frequency of 32MHz with an internal oscillator. It supports a supply voltage range of 1.62V to 3.63V and includes 16 channels of 12-bit analog-to-digital conversion. Connectivity options include I2C, SPI, UART/USART, and USB interfaces. The component provides 50 general-purpose I/Os and integrates peripherals such as DMA, LCD controller, PWM, and watchdog timer. It is housed in a 64-TQFP package with dimensions of 10x10mm and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Integrates ARM Cortex-M0+ processor for efficient code execution
• Includes built-in low-power crystal-less USB interface
• Features multiple communication interfaces including I2C, SPI, and USART
• Provides integrated analog peripherals with 12-bit ADC resolution

Applications

• Low-power consumer electronics devices
• USB-enabled peripheral controllers
• Industrial control systems requiring robust I/O
• Battery-operated instrumentation

Procurement Notes

Verify the specific suffix 'AUT' confirms automotive-grade qualification if required by your design specifications. Confirm the package type matches the 64-TQFP footprint in your PCB layout. Check the latest datasheet revision for any errata or pinout updates before finalizing production. Ensure voltage levels align with the 1.62V to 3.63V operating range.

Selection Notes

Select this model when 256KB of program storage is necessary for complex firmware applications. Choose the TQFP package if through-hole compatible surface mount assembly is preferred over QFN alternatives. Consider this part for designs requiring native USB connectivity without external transceivers. Evaluate the 32MHz speed against power consumption requirements for battery life optimization.

Part Context

This component is part of the Microchip SAM L22 family, designed for ultra-low power performance. It shares architectural similarities with other SAM L22 variants but offers specific memory and I/O configurations. The J-series designation indicates a particular pin count and peripheral set within the broader product line. It serves as a cost-effective solution for embedded applications needing reliable processing capabilities.

Replacement Considerations

ATSAML22J18A-MUT offers identical electrical specifications but utilizes a 64-QFN package instead of TQFP.