ATSAML22N18A-AUT

Overview

The ATSAML22N18A-AUT is an ARM Cortex-M0+ microcontroller from the Microchip SAM L22 family, designed for low-power applications. It features a 32-bit architecture with a maximum clock frequency of 32 MHz. The device integrates 256 kB of Flash program memory and 32 kB of SRAM data RAM. It operates within a supply voltage range of 1.62 V to 3.63 V and supports an industrial temperature range of -40°C to +85°C. The component is housed in a TQFP-100 package and includes multiple communication interfaces such as I2C, SPI, UART, USART, and USB.

Feature Summary

• Integrates a high-performance ARM Cortex-M0+ processor core optimized for code efficiency and low power consumption.
• Includes a versatile analog subsystem with a 12-bit ADC featuring up to 20 channels for precise signal acquisition.
• Supports comprehensive connectivity through integrated peripherals including USB Full-Speed, multiple serial interfaces, and DMA controllers.
• Features flexible timer and counter modules alongside PWM outputs for robust control system implementation.

Applications

• Portable consumer electronics requiring extended battery life
• Industrial sensor nodes and monitoring systems
• Smart home automation devices
• Medical instrumentation requiring low-voltage operation

Procurement Notes

Verify the specific suffix 'AUT' confirms automotive qualification status if required by your design specifications. Ensure the TQFP-100 package footprint matches your PCB layout constraints. Confirm moisture sensitivity level handling procedures during assembly to prevent package damage. Cross-reference the latest datasheet revision for any pinout or electrical characteristic updates before finalizing production orders.

Selection Notes

Select this model when a balance of moderate memory capacity and extensive I/O count is needed in a 100-pin form factor. It is suitable for designs requiring USB connectivity without external transceivers. Consider alternative SAML22 variants if higher clock speeds or different package sizes better fit the mechanical constraints. Evaluate power consumption requirements against the Cortex-M0+ sleep modes for optimal energy efficiency.

Part Context

This component belongs to the SAM L22 series, which targets ultra-low-power wireless and wired applications. The series shares architectural similarities with other Microchip ARM-based MCUs but focuses on optimizing performance per watt. The N-series designation typically indicates specific memory configurations and peripheral sets within the broader SAML22 ecosystem.

Replacement Considerations

ATSAML22N16A-AUT: Offers similar functionality with reduced Flash and SRAM capacity (64 kB/8 kB) in the same TQFP-100 package. ATSAML22J18A-AUT: Provides equivalent memory in a smaller 64-TQFP package, requiring PCB redesign. ATSAML22G18A-AUT: Features identical specifications but in a compact 48-TQFP package, suitable for space-constrained designs.