ATSAMD21E18A-AUT

Overview

The ATSAMD21E18A-AUT is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48 MHz. It features 256 kB of in-system programmable Flash memory and 32 kB of SRAM. The device includes a 12-bit ADC with 10 channels and a 10-bit DAC. It supports multiple communication interfaces including I2C, SPI, USART, and USB Device. Powered by a supply voltage ranging from 1.62 V to 3.63 V, it operates within a temperature range of -40°C to +85°C and is housed in a 32-pin TQFP package.

Feature Summary

• Integrates an ARM Cortex-M0+ processor for efficient code execution and low power consumption.
• Provides extensive connectivity through multiple serial communication peripherals such as SPI, I2C, and USART.
• Includes analog conversion capabilities with a 12-bit ADC and a 10-bit DAC for signal processing.
• Supports USB Device functionality for direct host communication without external transceivers.

Applications

• Portable consumer electronics requiring low power operation
• Industrial control systems utilizing serial communication protocols
• Human-machine interface devices with analog input requirements
• USB-enabled peripheral devices

Procurement Notes

Verify the specific suffix 'AUT' indicates tape and reel packaging when ordering. Confirm that the component meets AEC-Q100 qualification standards if automotive application compliance is required. Ensure design compatibility with the 32-pin TQFP footprint and verify voltage levels match the 1.62 V to 3.63 V operational range.

Selection Notes

Select this model when 256 kB of program memory and 32 kB of RAM are sufficient for the application logic. Choose this variant over other SAM D21 series members if the 32-pin form factor is constrained. Consider the integrated USB controller if external PHY components are undesirable. Verify that the 48 MHz clock speed aligns with real-time processing requirements.

Part Context

This component belongs to the Microchip SAM D21 family of 32-bit microcontrollers. These devices are designed for applications demanding high performance with minimal power usage. The family shares a common architecture but varies in memory size, pin count, and peripheral availability. The SAM D21 series is widely used in embedded systems requiring reliable ARM-based processing.

FAQ

Does the ATSAMD21E18A-AUT support CAN bus communication?

No, the datasheet specifications for this specific part number indicate zero CAN channels. Communication is limited to interfaces such as SPI, I2C, USART, and USB.

What is the resolution of the analog-to-digital converter?

The device is equipped with a 12-bit ADC, providing 10 available input channels for analog signal acquisition.