AVR128DB32-E/RXB

Overview

The AVR128DB32-E/RXB is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It integrates 128 KB of Flash, 16 KB of SRAM, and 512 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial (-40°C to 85°C) and extended (-40°C to 125°C) temperature ranges. Key peripherals include a 12-bit ADC, 10-bit DAC, multiple timers, and multi-voltage I/O.

Feature Summary

• Multi-Voltage I/O (MVIO) on Port C allows flexible interfacing with different logic levels without external components.
• Advanced analog subsystem includes a 12-bit differential ADC and op-amp signal conditioning for precise measurements.
• Event System enables CPU-independent inter-peripheral signaling for predictable and low-latency operations.
• Configurable Custom Logic (CCL) provides programmable Look-up Tables for custom digital logic implementation.

Applications

• Industrial control systems requiring robust analog signal processing
• Smart sensors utilizing multi-voltage interfaces and event-driven architectures
• Power management applications leveraging zero-cross detectors and PWM timers
• Embedded devices needing high reliability across extended temperature ranges

Procurement Notes

Verify the specific suffix 'E' indicates the extended temperature range (-40°C to 125°C) as per Microchip datasheet DS40002247A. Confirm the 'RXB' suffix corresponds to the 32-pin VQFN package. Ensure compatibility with the UPDI programming interface requirements. Check for any recent Product Change Notifications regarding packaging or material compliance.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. Choose the -E variant for designs operating in harsh thermal environments beyond standard industrial limits. Consider the 128 KB Flash capacity for complex firmware requirements. Evaluate the 16 KB SRAM against application stack needs before finalizing.

Part Context

This part belongs to the AVR128DB28/32/48/64 series, designed for pin and feature compatibility across the family. It shares the same core architecture and peripheral set as other DB devices, differing primarily in memory size and pin count. The 32-pin variant offers a balance between I/O availability and compact footprint.

Replacement Considerations

AVR128DB32-I/RXB serves as the industrial temperature grade alternative. Other AVR128DB32 variants with different packages (e.g., TQFP) are pin-compatible but require mechanical verification. Cross-family replacements like AVR64DB32 offer reduced memory and may lack specific peripheral counts.