AVR128DB28-E/SO

Overview

The AVR128DB28-E/SO is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash, 16 KB of SRAM, and 512 bytes of EEPROM. The device operates within a voltage range of 1.8V to 5.5V and supports extended temperatures up to 125°C. Key peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, and multiple timers. It utilizes a single-pin UPDI interface for programming and debugging.

Feature Summary

• Multi-Voltage I/O (MVIO) on Port C allows selectable input voltage thresholds for flexible interfacing.
• Configurable Custom Logic (CCL) provides programmable Look-up Tables for custom digital logic implementation.
• Event System enables CPU-independent inter-peripheral signaling for predictable system timing.
• Integrated Analog Signal Conditioning includes op amps with internal resistor ladders for complex configurations.

Applications

• Industrial control systems requiring robust analog signal processing
• Power control applications utilizing zero-cross detectors and PWM timers
• Sensor interfaces leveraging high-resolution differential ADCs
• Low-power embedded devices using configurable sleep modes

Procurement Notes

Verify the specific suffix 'SO' corresponds to the SOIC-28 package when ordering. Confirm that the '-E' designation indicates the extended temperature range capability (-40°C to +125°C). Ensure compatibility with existing designs by checking pinout alignment against other AVR DB family members if migration is planned.

Selection Notes

Select this component for designs needing vertical migration within the AVR DB family without code modification. It is suitable for applications requiring multi-voltage I/O flexibility and advanced analog features like window compare functions. Consider the 28-pin constraint when mapping required peripheral counts and general-purpose I/O lines.

Part Context

This part belongs to the AVR128DB28/32/48/64 series, which shares architectural similarities but varies in memory size and pin count. The AVR128DB28 specifically offers the highest memory capacity within the 28-pin form factor, providing 128 KB of Flash and 16 KB of SRAM while maintaining full feature parity with larger packages.

Replacement Considerations

AVR128DB28-E/SS is a compatible alternative offering the same electrical specifications in an SSOP-28 package. Both parts support identical pinouts and software architectures, allowing for direct substitution based on board space requirements or assembly preferences.