AVR32DD28T-E/SS

Overview

The AVR32DD28T-E/SS is an 8-bit microcontroller from the AVR DD family, featuring a 28-pin SSOP package. It utilizes an AVR CPU with a hardware multiplier, operating at clock speeds up to 24 MHz across a supply voltage range of 1.8V to 5.5V. The device includes 32 KB of in-system self-programmable Flash memory, 4 KB of SRAM, and 256 bytes of EEPROM. Key peripherals include a 12-bit ADC with 19 channels, a 10-bit DAC, two USARTs, SPI, TWI/I2C, and Multi-Voltage I/O (MVIO). It supports extended industrial temperature operation from -40°C to +125°C.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORT C enables true level-shifting bidirectional communication between different power domains without external components.
• Configurable Custom Logic (CCL) provides four programmable Look-up Tables for complex digital logic implementation independent of the CPU.
• Event System allows for CPU-independent inter-peripheral signaling, reducing system latency and improving real-time performance.
• Integrated analog features include a 12-bit differential ADC, 10-bit DAC, Analog Comparator, and Zero-Cross Detector for precise signal processing.

Applications

• Industrial control systems requiring multi-voltage domain interfacing
• Smart home appliances with diverse sensor inputs
• IoT devices needing low-latency peripheral communication
• Automotive applications supporting extended temperature ranges

Procurement Notes

Verify the specific ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) and 'SS' denotes the SSOP package style. Confirm the 'T' suffix indicates tape and reel packaging if required for automated assembly. Ensure compatibility with existing design footprints for 28-pin SSOP components. Cross-reference the datasheet revision DS40002315C for any updates to pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when vertical migration within the AVR DD family is needed without code modification. Choose the extended temperature variant for environments exceeding standard industrial limits. The MVIO feature is critical for designs integrating 5V and 3.3V subsystems directly. Consider the 32 KB Flash and 4 KB SRAM capacity against application memory requirements to ensure sufficient resources for firmware and runtime data.

Part Context

This part belongs to the AVR DD family, which emphasizes low-power architecture and intelligent analog features. It shares pin and feature compatibility with other members like the AVR64DD28 and AVR16DD28, allowing for flexible scaling. The series is designed for real-time control in industrial, automotive, and IoT applications, leveraging the Event System and CCL for efficient peripheral management.

Replacement Considerations

AVR32DD28-I/SS offers identical functionality with a standard industrial temperature range (-40°C to +85°C). AVR64DD28T-E/SS provides double the Flash and SRAM while maintaining the same package and extended temperature rating. AVR16DD28T-E/SS reduces memory size but retains the same pinout and features for cost-sensitive applications.