AVR64DU32T-I/RXB

Overview

The AVR64DU32T-I/RXB is an 8-bit microcontroller from the AVR® DU family, featuring a hardware multiplier and operating at clock speeds up to 24 MHz. It includes 64 KB of in-system self-programmable Flash memory with read-while-write capability, 8 KB of SRAM, and 256 bytes of EEPROM. The device operates within a supply voltage range of 1.8V to 5.5V 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 21 channels, and an analog comparator. It utilizes a single-pin Unified Program and Debug Interface (UPDI) for programming.

Feature Summary

• Integrates a USB 2.0 full-speed device-compliant interface supporting crystal-less operation via OSCHF tuning.
• Provides secure firmware upgrade capabilities through Program and Debug Interface Disable (PDID) and cryptographic key storage in the Boot Row.
• Features an Event System for CPU-independent inter-peripheral signaling and Configurable Custom Logic (CCL) with four Look-up Tables.

Applications

• USB-enabled embedded control systems
• Industrial communication nodes requiring RS-485 or LIN client support
• IoT devices needing secure over-the-air updates

Procurement Notes

Verify that the 'RXB' suffix corresponds to the 32-pin VQFN package as specified in the datasheet nomenclature. Confirm the 'T' designation indicates tape and reel packaging. Ensure the 'I' suffix matches the required industrial temperature range of -40°C to +85°C. Cross-reference the preliminary status in DS40002548A with final production data if available.

Selection Notes

Select this component when a USB 2.0 full-speed interface is required alongside standard serial communication protocols. It is suitable for designs needing high security features like PDID and boot row protection. Consider the 32-pin VQFN package constraints and the 1.8V to 5.5V operating voltage range during schematic design.

Part Context

This part belongs to the AVR® DU family, which offers vertical migration compatibility without code modification across different pin counts and memory sizes. It shares architectural similarities with other AVR DD and DA series but distinguishes itself with the integrated USB 2.0 peripheral and specific event system configurations.

Replacement Considerations

AVR32DU32T-I/RXB: Offers identical pinout and peripherals but with reduced 32 KB Flash and 4 KB SRAM capacity.

FAQ

Is the USB interface functional at all supply voltages?

No, the USB function is only available for VDD above 3.0V.

How does the PDID feature enhance security?

PDID prevents access to the reprogrammable Flash memory over UPDI after activation, allowing updates only via software stored in the protected Boot Code section.