AVR128DA32-I/RXB

Overview

The AVR128DA32-I/RXB is an 8-bit microcontroller from the AVR® DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It integrates 128 KB of Flash, 16 KB of SRAM, and 512 B of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperatures from -40°C to +85°C. Key peripherals include a 12-bit ADC with 14 channels, a 10-bit DAC, three analog comparators, and up to six USARTs. It utilizes a 32-pin VQFN package (RXB suffix) and offers 27 general-purpose I/O pins.

Feature Summary

• Integrates intelligent analog features including a 12-bit differential ADC, 10-bit DAC, and configurable custom logic for signal processing.
• Supports Peripheral Touch Controller (PTC) with Driven Shield+ technology for capacitive touch applications.
• Features a flexible Event System for CPU-independent inter-peripheral signaling and low-latency control loops.
• Provides single-pin Unified Program and Debug Interface (UPDI) for programming and debugging.

Applications

• Industrial automation controllers requiring precise analog signal conditioning
• Smart home devices utilizing capacitive touch interfaces
• Power control systems using Timer/Counter Type D optimization
• Communication nodes leveraging multiple USART and SPI interfaces

Procurement Notes

Verify the specific ordering suffix RXB confirms the 32-pin VQFN package type. Ensure the temperature grade 'I' matches the required industrial operating range of -40°C to +85°C. Confirm that the 128 KB Flash variant meets application memory requirements compared to other AVR128DA pin-compatible options.

Selection Notes

Select this component when vertical migration within the AVR DA family is needed without code modification. Choose the 32-pin variant if 27 I/O pins and 14 ADC channels are sufficient, allowing horizontal migration flexibility. Consider the integrated PTC and analog peripherals if touch sensing or high-precision measurement is required without external components.

Part Context

This part belongs to the AVR® DA family, which combines high-performance 8-bit processing with advanced analog capabilities. The family emphasizes low-power architecture and event-driven operation. The AVR128DA32 specifically targets applications needing moderate memory density with rich peripheral sets in a compact form factor.

Replacement Considerations

AVR128DA28-I/RXB, AVR128DA48-I/RXB, AVR128DA64-I/RXB