AVR64DD28T-I/SO

Overview

The AVR64DD28T-I/SO is an 8-bit microcontroller from the AVR DD family, utilizing the AVR CPU with a hardware multiplier and operating at clock speeds up to 24 MHz. It features 64 KB of in-system self-programmable Flash memory, 8 KB of SRAM, and 256 bytes of EEPROM. The device is housed in a 28-pin SOIC package and supports a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit ADC, a 10-bit DAC, three USARTs, two SPI interfaces, and a TWI interface.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on PORTC for flexible interfacing across different power domains without external level shifters.
• Includes an Event System (EVSYS) for CPU-independent inter-peripheral signaling to reduce system latency.
• Integrates Configurable Custom Logic (CCL) with programmable Look-up Tables for complex digital logic implementation.
• Supports single-pin Unified Program and Debug Interface (UPDI) for programming and debugging.

Applications

• Industrial control systems requiring robust peripheral integration
• Smart home appliances with multi-voltage domain requirements
• IoT devices needing low-power operation and efficient event handling
• Automotive applications compatible with industrial temperature ranges

Procurement Notes

Verify the ordering suffix 'T' indicates tape and reel packaging and 'SO' denotes the SOIC package style. Confirm the 'I' suffix specifies the industrial temperature range of -40°C to +85°C. Ensure compatibility with existing design footprints for 28-pin SOIC components. Cross-reference the specific revision DS40002315C for any updates to pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when 64 KB of Flash and 8 KB of SRAM are required within a 28-pin footprint. Consider the AVR64DD28T-I/SO for designs needing MVIO capabilities on PORTC. Evaluate the trade-off between the 24 MHz maximum frequency and power consumption. Compare against other AVR DD family members if pin count or memory size adjustments are necessary for cost optimization.

Part Context

This part belongs to the AVR DD family, which emphasizes vertical migration compatibility across pin counts and memory sizes. It shares architectural similarities with the AVR64DD32 but offers fewer pins. The family utilizes advanced technologies like the Event System and intelligent analog features to enhance performance while maintaining low power consumption typical of Microchip's AVR architecture.

Replacement Considerations

AVR64DD28T-E/SO: Extended temperature range (-40°C to +125°C). AVR64DD28-I/SS: SSOP package variant. AVR64DD28-I/SP: SPDIP package variant. Verify pin compatibility and thermal specifications when substituting.