AVR32DB28-I/SP

Overview

The AVR32DB28-I/SP is an 8-bit microcontroller from the AVR DB family, featuring a hardware multiplier CPU running at up to 24 MHz. It includes 32 KB of 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 temperatures from -40°C to +85°C. It utilizes a 28-pin SPDIP package and provides 22 general-purpose I/O pins with Multi-Voltage I/O (MVIO) capabilities.

Feature Summary

• Multi-Voltage I/O (MVIO) on Port C enables direct communication with devices operating at different voltage levels without external level shifters.
• Configurable Custom Logic (CCL) allows for complex digital logic implementation using programmable Look-up Tables, reducing system latency.
• Event System facilitates CPU-independent inter-peripheral signaling for predictable real-time control applications.
• Integrated Analog Signal Conditioning peripherals include op amps with internal resistor ladders for flexible signal processing.

Applications

• Industrial control systems requiring robust noise immunity and multi-voltage domain interfacing
• Smart energy metering and utility infrastructure monitoring
• Consumer electronics utilizing low-power architectures and advanced analog features
• Automotive body control modules compliant with functional safety standards

Procurement Notes

Verify the ordering suffix 'I' confirms the Industrial temperature range (-40°C to +85°C). Confirm the '/SP' suffix corresponds to the SPDIP-28 package style. Ensure the specific revision matches the required datasheet version DS40002301B. Cross-reference the part number against official Microchip databases to validate current availability status.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. Choose this model for designs needing Multi-Voltage I/O support on Port C. Consider this MCU for applications demanding high-speed analog peripherals like ZCDs and OPAMPs alongside standard digital interfaces.

Part Context

This device belongs to the AVR32DB series, which shares pinout and feature compatibility with AVR64DB and AVR128DB variants. This allows for easy horizontal or vertical migration within the family based on memory requirements while maintaining software compatibility across the product line.

Replacement Considerations

AVR32DB28-E/SP offers the same specifications but with an Extended temperature range (-40°C to +125°C). Other AVR32DB28 variants in different packages such as SOIC or TQFP are available for surface mount applications.

FAQ

Does the AVR32DB28-I/SP support Multi-Voltage I/O?

Yes, Port C on the AVR32DB28 supports Multi-Voltage I/O (MVIO), allowing it to interface directly with devices operating at different voltage levels.

What is the maximum clock frequency of the AVR32DB28?

The AVR32DB28 CPU runs at clock speeds up to 24 MHz.

Is the AVR32DB28 compatible with other devices in the AVR DB family?

Yes, the AVR32DB28 is fully pin and feature compatible with other devices in the AVR DB family, allowing for vertical migration without code modification.