AVR32DB28-I/SO

Overview

The AVR32DB28-I/SO is an 8-bit microcontroller from the AVR DB family, utilizing an AVR CPU with a hardware multiplier running at up to 24 MHz. It features 32 KB of in-system self-programmable Flash memory, 4 KB of SRAM, and 512 bytes of EEPROM. The device operates within a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges from -40°C to +85°C. It includes advanced peripherals such as a 12-bit ADC, 10-bit DAC, analog comparators, and multi-voltage I/O capabilities.

Feature Summary

• Multi-Voltage I/O (MVIO) on Port C enables true level-shifting bidirectional communication between devices operating on different power domains without external components.
• Configurable Custom Logic (CCL) provides programmable Look-up Tables for creating custom digital logic functions, reducing system latency and CPU overhead.
• Event System allows for CPU-independent inter-peripheral signaling, ensuring predictable timing and improved real-time performance for complex applications.

Applications

• Industrial control systems requiring robust noise immunity and multi-domain communication
• Smart home appliances and IoT devices needing low-power operation and flexible I/O configurations
• Automotive applications meeting ISO 26262 functional safety standards

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding pinout and peripheral availability. Cross-reference datasheet revisions to validate feature sets before finalizing procurement decisions.

Selection Notes

Select this component when designing systems that require seamless integration across multiple voltage levels without additional level shifters. Consider its vertical migration path within the AVR DB family for future scalability. Evaluate the Event System and CCL capabilities if minimizing CPU intervention for peripheral tasks is a priority.

Part Context

This part belongs to the AVR DB microcontroller family, which emphasizes high performance and low power consumption. The family offers full pin and feature compatibility across variants, allowing for easy code migration and design flexibility. It integrates advanced analog and digital peripherals suitable for demanding embedded applications.

Replacement Considerations

AVR32DB28T-I/SO: Identical electrical specifications and functionality; differs only in tape-and-reel packaging instead of tube/tray.

FAQ

Does the AVR32DB28-I/SO support bidirectional communication between different voltage domains?

Yes, it features Multi-Voltage I/O (MVIO) on Port C, which supports true level-shifting bidirectional communication without external components.

What is the maximum clock speed of the AVR32DB28-I/SO?

The AVR CPU runs at clock speeds up to 24 MHz.