AVR32DU20T-I/REB

Overview

The AVR32DU20T-I/REB is an 8-bit microcontroller from the AVR DU family, featuring a 24 MHz CPU with hardware multiplier. It includes 32 KB of Flash memory with read-while-write capability, 4 KB of SRAM, and 256 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key peripherals include a USB 2.0 full-speed device interface, two USARTs, one SPI, one TWI/I2C, a 10-bit ADC with 11 channels, and four CCL LUTs. It utilizes a single-pin UPDI for programming and debugging.

Feature Summary

• Integrates a USB 2.0 full-speed device interface compliant with standard specifications.
• Features Program and Debug Interface Disable (PDID) for secure firmware protection.
• Includes Configurable Custom Logic (CCL) with programmable Look-up Tables for custom digital logic.
• Supports low-power operation through multiple sleep modes including Idle, Standby, and Power-Down.

Applications

• USB-enabled consumer electronics
• Industrial control systems requiring secure communication
• Smart home devices with analog sensor inputs
• Battery-powered applications utilizing low-power modes

Procurement Notes

Verify the specific package variant matches your PCB footprint requirements. Confirm that the operating voltage conditions align with your system design, particularly regarding USB functionality which requires VDD above 3.0V. Ensure compatibility with existing development tools supporting the UPDI interface. Check for any preliminary status notices in official documentation before finalizing production plans.

Selection Notes

Select this component when a compact 20-pin solution with integrated USB connectivity is required. It is suitable for designs needing moderate Flash capacity and analog input channels without external components. Consider the I/O count and peripheral availability against application demands. Evaluate power consumption profiles if battery operation is critical.

Part Context

This part belongs to the AVR DU family, designed for vertical migration across pin counts and memory sizes. It shares architectural similarities with other AVR microcontrollers but adds advanced features like CCL and USB. The family targets cost-sensitive applications requiring robust performance and security features in small packages.

Replacement Considerations

Direct replacements within the same family include AVR32DU20 variants with different packaging or temperature ratings. Cross-family migration may require code adaptation due to peripheral differences. Verify pin compatibility and memory size requirements when considering alternative Microchip parts.