AVR32DB28-I/SS

Overview

The AVR32DB28-I/SS 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 voltage range of 1.8 V to 5.5 V and supports industrial temperatures (-40°C to +85°C). Key peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, one zero-cross detector, two op amps, four TCBs, one TCA, one TCD, and an RTC. Communication interfaces consist of three USARTs, two SPIs, and one TWI/I2C. It utilizes Multi-Voltage I/O (MVIO) on Port C and is housed in a 28-pin SSOP package.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on Port C enables direct bidirectional communication between different power domains without external level shifters.
• Integrated Analog Signal Conditioning subsystem provides up to three operational amplifiers with internal resistor ladders for flexible configurations.
• Configurable Custom Logic (CCL) allows up to four Look-up Tables (LUTs) to create custom digital logic functions independent of the CPU.
• Event System facilitates CPU-independent inter-peripheral signaling to reduce system latency and interrupt overhead.

Applications

• Industrial control systems requiring multi-voltage domain interfacing
• Smart home appliances utilizing analog signal conditioning
• IoT devices needing low-latency event-driven processing
• Power control applications using optimized PWM timers

Procurement Notes

Verify the specific ordering suffix matches the required package style and temperature grade. Confirm that the 'I' designation corresponds to the Industrial temperature range (-40°C to +85°C) and 'SS' indicates the SSOP package. Ensure compatibility with existing design constraints regarding pinout and memory size before finalizing procurement orders.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. Choose this part if the application demands Multi-Voltage I/O capabilities or specific analog peripherals like zero-cross detectors and op amps. Verify that the 32 KB Flash and 4 KB SRAM meet the program and data storage requirements for the target firmware.

Part Context

This device belongs to the AVR DB microcontroller family, which emphasizes low-power architecture and advanced digital peripherals. It shares full pin and feature compatibility with other members of the series, allowing for easy horizontal and vertical migration. The family integrates high-performance analog subsystems and configurable logic to support complex real-time control applications.

Replacement Considerations

AVR64DB28-I/SS, AVR128DB28-I/SS, AVR32DB32-I/SS, AVR32DB48-I/SS