AVR16DU28T-I/STX

Overview

The AVR16DU28T-I/STX is an 8-bit microcontroller from the AVR DU family, featuring a 16 KB Flash memory, 2 KB SRAM, and 256 bytes of EEPROM. It operates at clock speeds up to 24 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes a USB 2.0 full-speed interface, two USARTs, one SPI, and one TWI/I2C module. It utilizes a 28-pin SSOP package and supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Supports in-system self-programmable Flash memory with read-while-write capabilities for uninterrupted operation during updates.
• Integrates a hardware multiplier and single-cycle I/O access to enhance processing efficiency within the AVR CPU architecture.
• Includes a dedicated Event System for predictable inter-peripheral signaling independent of the CPU core.
• Features Program and Debug Interface Disable (PDID) to secure firmware against unauthorized modification via the UPDI.

Applications

• USB-enabled peripheral devices requiring full-speed data transfer
• Industrial control systems operating within extended temperature environments
• Battery-powered applications utilizing low-power sleep modes
• Communication interfaces using RS-485 or LIN client protocols

Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape and reel packaging as specified in the datasheet nomenclature. Confirm the 'I' suffix indicates the industrial temperature range of -40°C to +85°C. Ensure the 'SS' designation matches the required SSOP package style for your PCB layout. Cross-reference the specific part number with the manufacturer's latest documentation to confirm current production status.

Selection Notes

Select this component when a balance of moderate memory capacity and integrated USB connectivity is required. The 28-pin form factor provides sufficient GPIO for mid-range applications while maintaining a compact footprint. Consider the 24 MHz maximum frequency for timing-sensitive tasks and evaluate the available timer and communication peripherals against system requirements before finalizing the design.

Part Context

This microcontroller belongs to the AVR DU family, which shares pin and feature compatibility across various memory sizes and pin counts. It serves as a modern successor to legacy AVR architectures, offering enhanced power management and advanced digital peripherals. The family allows for vertical migration without code modification, facilitating scalable product development strategies.

Replacement Considerations

AVR16DU28-I/SS