ATSAMD21E16B-AU

Overview

The ATSAMD21E16B-AU is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 64KB of Flash program memory and 8KB of SRAM data memory. The device supports a supply voltage range of 1.62V to 3.6V and includes advanced analog peripherals such as ten 12-bit ADC channels and one 10-bit DAC. Connectivity options include I2C, SPI, USART, USB, and LINbus interfaces. It is housed in a 32-pin TQFP package with an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates Functional Safety (FuSa) capabilities within the SAM D21E series architecture.
• Provides high-resolution analog conversion through multiple 12-bit ADC channels and a dedicated 10-bit DAC.
• Supports comprehensive communication protocols including USB, LINbus, I2C, SPI, and USART for versatile system integration.

Applications

• Industrial control systems requiring functional safety compliance
• Portable battery-powered devices utilizing low-power operation modes
• Data acquisition systems leveraging high-resolution analog input channels

Procurement Notes

Verify the specific suffix 'AU' confirms the 48MHz speed grade, industrial temperature range (-40°C to +85°C), and 32-TQFP packaging. Confirm RoHS compliance status via the manufacturer's current documentation. Ensure the source document explicitly lists this part number to avoid confusion with similar variants like the CFT or MU packages which differ in pin count or form factor.

Selection Notes

Select this component when a balance of moderate flash capacity and functional safety features is required for cost-sensitive applications. It is suitable for designs needing integrated USB connectivity without external transceivers. Consider alternative SAM D21 variants if higher I/O counts or larger memory sizes are necessary for the target application scope.

Part Context

This MCU belongs to the SAM D21G/E/J family from Microchip Technology, designed for low-power, high-performance embedded applications. The series utilizes the ARM Cortex-M0+ processor to deliver efficient code execution while maintaining minimal power consumption. The ATSAMD21E16B-AU specifically targets applications requiring reliable analog signal processing and robust communication interfaces in a compact footprint.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific component configuration were not identified in the provided documentation. Engineers should consult the official SAM D21 family datasheet for detailed cross-reference information regarding pin-compatible or functionally equivalent alternatives.