ATSAMC20E18A-AUT

Overview

The ATSAMC20E18A-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, 1Msps Analog-to-Digital Converter (ADC), two analog comparators, and a Peripheral Touch Controller supporting up to 64 mutual-capacitance channels. It provides 26 programmable I/O pins and supports multiple communication interfaces including USART, SPI, I2C, and LINbus via four SERCOM instances. Operating voltage ranges from 2.7V to 5.5V.

Feature Summary

• Integrated ARM Cortex-M0+ CPU with single-cycle hardware multiplier and Micro Trace Buffer
• Supports capacitive touch user interfaces via Peripheral Touch Controller with automatic offset and gain error compensation
• Includes six-channel Direct Memory Access Controller and six-channel Event System for inter-peripheral signaling
• Features Configurable Custom Logic (CCL) and Timer/Counter for Control (TCC) with deterministic fault protection

Applications

• Industrial automation systems
• Appliance control units
• 5V applications requiring robust peripheral connectivity
• Motor and lighting control applications

Procurement Notes

Verify the specific ordering code suffixes against official documentation to confirm package type and temperature range. The 'AUT' suffix indicates TQFP packaging with an operating temperature range of -40°C to +85°C and Matte Sn plating. Confirm pin count and memory configuration match the design requirements before procurement.

Selection Notes

Select this component when a 32-bit MCU with 256KB Flash and 32KB RAM is required in a 32-pin package. Ensure the application utilizes the available 26 GPIOs and does not exceed the 10 ADC channel limit. Verify that the 48MHz clock speed and peripheral set, including the Event System and CCL, meet the system's processing and timing needs.

Part Context

This device belongs to the SAM C20 series, which offers pin-compatible migration paths within the family. It shares identical peripheral modules and address maps with other SAM C20 variants, facilitating easy upgrades between different memory sizes and pin counts without redesigning the hardware layout.

Replacement Considerations

ATSAMC20E18A-ANT: Identical specifications but rated for -40°C to +85°C temperature range with Tape & Reel packaging.

FAQ

What is the maximum resolution of the ADC?

The ADC supports up to 16-bit resolution through hardware oversampling and decimation.

Does the device support Serial Wire Debug?

Yes, it includes a two-pin Serial Wire Debug (SWD) interface for programming and debugging.

How many SERCOM instances are available?

The device provides four Serial Communication Interface (SERCOM) instances.