ATSAML21E18B-ANT

Overview

The ATSAML21E18B-ANT is a Microchip Technology ARM microcontroller based on the Cortex-M0+ core, housed in a 48-pin TQFP package. It operates within a voltage range of 1.6V to 3.6V and supports a maximum clock frequency of 48 MHz. The device features 256 kB of Flash program memory and 32 kB of SRAM data memory. It includes an integrated 12-bit ADC with 10 channels, a 12-bit DAC, and multiple communication interfaces including I2C, LIN, SPI, USART, and USB. The component is rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Integrates a 32-bit ARM Cortex-M0+ processor core for efficient code execution.
• Provides extensive analog capabilities with dual 12-bit ADCs and a 12-bit DAC.
• Supports versatile connectivity through multiple serial communication peripherals.
• Includes hardware security features and low-power modes for energy efficiency.

Applications

• Industrial control systems requiring robust peripheral integration
• Smart home appliances and IoT sensor nodes
• Medical devices needing precise analog signal processing
• Consumer electronics utilizing USB connectivity

Procurement Notes

Verify the specific suffix 'ANT' corresponds to the 48TQFP package and industrial temperature grade (-40°C to +85°C) as per the official datasheet. Confirm RoHS compliance status directly from the manufacturer's documentation. Ensure pinout compatibility with existing PCB layouts before procurement, as package variations exist within the SAML21 family.

Selection Notes

Select this part when a balance of moderate memory capacity (256 kB Flash) and rich peripheral set is required. It is suitable for applications needing USB connectivity and multiple analog inputs without the higher cost or complexity of larger families. Consider the TQFP-48 package availability if surface-mount assembly with exposed pad is preferred over QFN options.

Part Context

This component belongs to the Microchip SAM L21 series, designed for low-power applications using the ARM Cortex-M0+ architecture. The series emphasizes energy efficiency while maintaining high performance for general-purpose microcontroller tasks. The SAML21 family integrates advanced analog peripherals and security features, targeting smart sensing and IoT markets.

FAQ

What is the maximum operating frequency of the ATSAML21E18B-ANT?

The maximum system clock frequency is 48 MHz.

Does this MCU support USB communication?

Yes, it includes a full-speed USB interface.