AVR32DB28T-I/SO

Overview

The AVR32DB28T-I/SO is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB of Flash, 4 KB of SRAM, and 512 bytes of EEPROM. The device operates within a 1.8 V to 5.5 V supply range and supports up to 22 I/O pins in a 28-pin SOIC package. Key peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, two zero-cross detectors, and multiple communication interfaces such as USART, SPI, and TWI.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on Port C enables direct bidirectional communication across different voltage domains without external level shifters.
• Integrated Analog Signal Conditioning features include op amps with internal resistor ladders for flexible configurations without external components.
• Configurable Custom Logic (CCL) provides programmable Look-up Tables to reduce system latency and offload processing tasks from the CPU.

Applications

• Industrial control systems requiring real-time processing and noise immunity
• Smart home appliances utilizing multi-voltage domain interfacing
• IoT devices leveraging low-power sleep modes and event-driven architectures

Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to +85°C). Confirm the '/SO' designation matches the required 28-pin SOIC package type. Ensure the 'T' indicates tape and reel packaging if automated assembly is intended. Cross-reference the datasheet revision DS40002301B for any errata or pin multiplexing updates relevant to your design.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. Choose this part for designs needing robust analog signal conditioning alongside standard digital control. Consider the MVIO feature if interfacing with mixed-voltage sensors or actuators directly. Verify that the 32 KB Flash and 4 KB SRAM meet the application's memory constraints.

Part Context

This device belongs to the AVR DB family, which emphasizes high-performance analog capabilities and low power consumption. It shares architectural similarities with other members like the AVR64DB28 and AVR128DB28, allowing for easy scaling. The family utilizes advanced technologies including an Event System and precise analog subsystems to support complex embedded applications efficiently.

Replacement Considerations

AVR32DB28T-E/SS offers extended temperature range (-40°C to +125°C) in SSOP-28 package. AVR32DB28T-I/RXB provides 32-VQFN package option. AVR128DB28-I/SO provides increased memory capacity in the same SOIC-28 package.