ATSAMD21E16B-UUTB4

Overview

The ATSAMD21E16B-UUTB4 is a 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at a maximum frequency of 48MHz. It features 64KB of Flash memory and 8KB of SRAM. The device includes an internal oscillator and supports a supply voltage range of 1.62V to 3.63V. Connectivity options include I2C, LINbus, SPI, UART/USART, and USB interfaces. Data converters consist of ten 12-bit ADC channels and one 10-bit DAC. Peripherals encompass Brown-out Detect/Reset, DMA, I2S, POR, PWM, and WDT. It utilizes a 35-WLCSP package and operates within a temperature range of -40°C to 85°C.

Feature Summary

• ARM Cortex-M0+ processor architecture for efficient code execution
• Integrated analog peripherals including multiple ADC channels and a DAC
• Comprehensive communication interfaces supporting standard protocols
• Functional safety capabilities within the SAM D21 family

Applications

• General-purpose embedded control systems
• Low-power consumer electronics devices
• Industrial automation controllers
• IoT sensor nodes requiring wireless connectivity

Procurement Notes

Verify component authenticity through authorized Microchip Technology distributors or certified partners. Confirm that the specific ordering suffix matches project requirements for package type and temperature grade. Request official datasheets and errata documents to ensure compliance with current design specifications. Validate RoHS and REACH compliance status prior to integration into final products.

Selection Notes

Select this model when a balance of processing speed and low power consumption is required for space-constrained designs. The 35-WLCSP package offers a compact footprint suitable for dense PCB layouts. Ensure interface requirements align with available I2C, SPI, and USART channels. Consider the internal oscillator accuracy if precise timing without external crystals is acceptable for the application.

Part Context

This component belongs to the SAM D21G and SAM D21E series of microcontrollers from Microchip Technology. These devices are designed for cost-sensitive applications requiring reliable performance. The series shares architectural similarities but varies in memory size, package options, and peripheral counts. This specific part represents a general-purpose variant optimized for efficiency.

Replacement Considerations

Direct substitutes may include other parts within the SAM D21 family with compatible pinouts and memory configurations. Verify electrical characteristics and package dimensions before substitution. Consult Microchip documentation for cross-reference lists and compatibility matrices.