AVR64DB28-I/SO

Overview

The AVR64DB28-I/SO is an 8-bit microcontroller from the AVR DB family, featuring a hardware multiplier and operating at clock speeds up to 24 MHz. It includes 64 KB of self-programmable Flash memory, 8 KB of SRAM, and 512 bytes of EEPROM. The device provides 22 programmable I/O pins in a 28-pin SOIC package. Key peripherals include a 12-bit differential ADC with 13 channels, three analog comparators, one 10-bit DAC, and multiple communication interfaces such as USART, SPI, and TWI.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on Port C for flexible voltage level interfacing
• Includes an Event System for CPU-independent inter-peripheral signaling
• Supports Configurable Custom Logic (CCL) with programmable Look-up Tables
• Integrates Analog Signal Conditioning peripherals including op amps

Applications

• Industrial control systems requiring precise analog signal processing
• Power management applications utilizing zero-cross detection and PWM generation
• Embedded sensor nodes using multi-voltage I/O capabilities
• Communication gateways leveraging dual-mode TWI and SPI interfaces

Procurement Notes

Verify the specific ordering suffix matches the required temperature range and package style. Confirm that the 'I' designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure the '/SO' suffix aligns with the desired 28-pin SOIC footprint. Cross-reference the datasheet revision to confirm peripheral availability and electrical characteristics.

Selection Notes

Select this component when a balance of moderate memory size and rich analog peripherals is required. The AVR DB family allows vertical migration without code modification to higher memory variants. Consider the 24 MHz operation speed and low-power sleep modes for energy-constrained designs. Verify that the 12-bit ADC resolution meets application accuracy requirements.

Part Context

This device belongs to the AVR DB microcontroller family, which emphasizes low power and advanced analog features. It shares architectural similarities with other AVR devices but introduces enhanced event systems and configurable logic. The family supports seamless migration between different pin counts and memory sizes while maintaining software compatibility.

Replacement Considerations

AVR64DB28-E/SO offers extended temperature range support.