ATSAMC20J18A-AUT

Overview

The ATSAMC20J18A-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ processor, operating at a maximum frequency of 48MHz. It features 256KB of in-system self-programmable Flash memory and 32KB of SRAM. The device includes a 12-channel, 12-bit Analog-to-Digital Converter (ADC) with up to 1Msps sampling rate, two analog comparators, and a Peripheral Touch Controller supporting up to 256 channels. It offers up to 52 programmable I/O pins and supports multiple communication interfaces including USART, SPI, I2C, LIN, and RS-485 via four SERCOM modules. Operating voltage ranges from 2.7V to 5.5V, with an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated ARM Cortex-M0+ processor with single-cycle hardware multiplier and Micro Trace Buffer for efficient code execution and debugging.
• Supports capacitive touch user interfaces through a dedicated Peripheral Touch Controller with up to 256 sensing channels.
• Includes intelligent peripherals such as a six-channel Event System and Direct Memory Access Controller for low-power data handling.
• Features Configurable Custom Logic (CCL) allowing flexible interconnection of peripherals without CPU intervention.

Applications

• Industrial automation controllers requiring robust 5V operation
• Appliance control systems with user interface needs
• Motor and lighting control applications utilizing TCC extended functions
• Battery-powered devices leveraging SleepWalking and low-power modes

Procurement Notes

Verify the specific ordering suffix 'AUT' corresponds to the Tape & Reel packaging format and the 85°C temperature grade as defined in the official Microchip SAM C20 datasheet. Confirm that the package type matches the required footprint, specifically the 64-pin TQFP variant for this part number. Ensure compatibility with existing design tools and development kits within the SAM C20 family.

Selection Notes

Select this component when high pin count and substantial memory are required within the SAM C20 series. It provides pin compatibility with other SAM C20 variants, facilitating migration between different memory configurations. Consider the 5V operating voltage range for direct interfacing with legacy 5V logic systems without level shifting.

Part Context

This device belongs to the Atmel SMART SAM C20 family, optimized for industrial and appliance applications. It shares identical peripheral modules and hex-compatible code with the SAM D and SAM C families, enabling straightforward migration paths. The series emphasizes low power consumption while maintaining performance through advanced clock management and sleep modes.

Replacement Considerations

Pin-compatible alternatives within the same package include ATSAMC20J17A-AUT (128KB Flash), ATSAMC20J16A-AUT (64KB Flash), and ATSAMC20J15A-AUT (32KB Flash). Verify software compatibility if migrating to lower memory variants due to potential code size constraints.