AVR128DA32-E/RXB

Overview

The AVR128DA32-E/RXB is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB Flash, 16 KB SRAM, and 512 B EEPROM. The device operates within a 1.8 V to 5.5 V supply range and supports -40°C to +125°C temperatures. It provides 27 I/O pins in a 32-pin VQFN package. Peripherals include a 12-bit ADC, 10-bit DAC, three analog comparators, three zero-cross detectors, PTC, CCL, USART, SPI, TWI/I2C, TCA, TCB, TCD, RTC, WDT, and UPDI.

Feature Summary

• Integrates intelligent analog features including a 12-bit differential ADC, 10-bit DAC, and multiple voltage references for high-precision signal processing.
• Supports capacitive touch applications via the Peripheral Touch Controller (PTC) with Driven Shield+ and Boost Mode technologies.
• Enables flexible logic design through Configurable Custom Logic (CCL) utilizing programmable Look-up Tables (LUTs).
• Facilitates efficient inter-peripheral communication using the Event System for CPU-independent signaling.

Applications

• Smart energy metering systems requiring precise analog measurements and power monitoring.
• Industrial control interfaces utilizing zero-cross detection and isolated communication protocols.
• Consumer devices incorporating capacitive touch user interfaces such as sliders or wheels.
• Embedded motor control applications leveraging specialized timer counters and event-driven architectures.

Procurement Notes

Verify the ordering suffix RXB confirms the 32-pin VQFN package and E suffix indicates extended temperature range (-40°C to +125°C). Confirm the specific datasheet revision matches your design requirements. Ensure compatibility with UPDI programming tools. Check for any recent product change notices regarding packaging or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when vertical migration within the AVR DA family is required without code modification. Choose this part if 128 KB of program memory and 16 KB of RAM are necessary for complex firmware. Opt for this MCU when integrated analog peripherals like the 12-bit ADC and PTC reduce external component count. Consider this device for designs needing robust industrial temperature operation and single-wire debugging capabilities.

Part Context

This microcontroller belongs to the AVR DA family, which combines the AVR CPU with intelligent analog features and advanced digital peripherals. The family emphasizes low-power architecture and event-driven system design. Devices in this series support seamless vertical migration across different pin counts and memory sizes while maintaining feature compatibility.

Replacement Considerations

AVR128DA28-E/RXB offers similar functionality with reduced pin count and peripheral availability. AVR128DA48-E/MR provides increased I/O capacity and additional timers in a larger package. AVR64DA32 variants offer lower memory density but maintain comparable peripheral sets. Verify pinout compatibility and memory size requirements when evaluating these alternatives.

FAQ

What is the maximum operating frequency of the AVR128DA32-E/RXB?

The device runs at up to 24 MHz using the internal high-frequency oscillator or external clock sources.

How many general-purpose I/O pins are available on this package?

The 32-pin VQFN package provides 27 programmable general-purpose I/O pins.

Does the device support simultaneous master and slave operations on I2C?

Yes, the TWI/I2C interface can operate simultaneously as master and slave on different pins.