AVR64DD28-I/SO

Overview

The AVR64DD28-I/SO is an 8-bit microcontroller from the AVR DD family, utilizing the AVR CPU with a hardware multiplier. It features 64 KB of in-system self-programmable Flash memory, 8 KB of SRAM, and 256 bytes of EEPROM. The device operates at clock speeds up to 24 MHz within a supply voltage range of 1.8V to 5.5V. It includes a 12-bit differential ADC, a 10-bit DAC, analog comparators, and multiple timer/counters. The component is housed in a 28-pin SOIC package and supports industrial temperature ranges.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORTC enables bidirectional communication across different power domains without external level shifters.
• Configurable Custom Logic (CCL) provides four programmable Look-up Tables for custom digital logic implementation independent of the CPU.
• Event System allows peripheral-to-peripheral signaling to reduce CPU intervention and system latency.
• Integrated Zero-Cross Detector facilitates AC power control applications by detecting mains waveform transitions.

Applications

• Industrial control systems requiring real-time processing
• Smart home appliances with multi-voltage domain requirements
• IoT devices utilizing low-power sleep modes
• Power control circuits using zero-cross detection

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package style and temperature rating. Ensure the 'I' suffix corresponds to the required industrial operating range. Confirm pinout compatibility if migrating from previous AVR generations. Check for any recent revisions to the preliminary datasheet that may affect peripheral specifications or electrical characteristics before finalizing procurement.

Selection Notes

Select this model when 64 KB of program memory and 8 KB of RAM are required for complex 8-bit applications. Choose this variant over smaller memory options if code size exceeds 32 KB. Consider the MVIO feature if interfacing with 3.3V peripherals while running at 5V. Verify that the 28-pin SOIC package fits the PCB layout constraints compared to VQFN or TQFP alternatives.

Part Context

This component belongs to the AVR DD family, which emphasizes intelligent analog features and advanced digital peripherals. The family supports vertical migration between pin counts without code modification due to full pin and feature compatibility. The AVR64DD28 represents the 64 KB Flash variant in the 28-pin form factor, bridging performance gaps between lower-memory AVRs and higher-end architectures.

Replacement Considerations

AVR64DD28-E/SO offers extended temperature range capabilities.

FAQ

Does the AVR64DD28 support simultaneous host and client operation on its TWI interface?

Yes, the TWI/I2C interface supports dual mode operation, allowing it to function as both a host and a client simultaneously on different pins.

What is the maximum sampling rate of the integrated ADC?

The 12-bit differential Analog-to-Digital Converter supports a sampling rate of up to 130 ksps.