AVR128DA64-E/MR

Overview

The AVR128DA64-E/MR 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 supply voltage range of 1.8 V to 5.5 V and supports an extended temperature range of -40°C to +125°C. It provides up to 55 programmable I/O pins in a 64-pin VQFN package.

Feature Summary

• Integrates intelligent analog features including a 12-bit differential ADC, three analog comparators, and zero-cross detectors for precise signal conditioning.
• Supports capacitive touch applications via the Peripheral Touch Controller (PTC) with Driven Shield+ technology.
• Enables low-latency inter-peripheral communication through the Event System and Configurable Custom Logic (CCL).
• Offers flexible clocking options with auto-tuning internal oscillators and an external crystal input for high-precision timing.

Applications

• Industrial control systems requiring robust analog signal processing
• Smart home appliances utilizing capacitive touch interfaces
• Power management devices employing zero-cross detection
• Wireless communication stacks demanding efficient memory usage

Procurement Notes

Verify the ordering suffix 'E' confirms the extended temperature rating (-40°C to +125°C) and 'MR' indicates the VQFN64 package. Ensure compatibility with existing designs by confirming pinout alignment with other AVR DA family members. Cross-reference the datasheet revision to validate peripheral availability and electrical characteristics before finalizing procurement.

Selection Notes

Select this component when high I/O density and advanced analog capabilities are required in an 8-bit architecture. The extended temperature grade suits harsh environments. Consider vertical migration within the AVR DA family for future scalability without code modification. Evaluate the trade-off between pin count and feature availability compared to smaller variants like the AVR128DA48.

Part Context

This part belongs to the AVR128DA series, which shares architectural similarities with the AVR32DA and AVR64DA families. These devices offer horizontal and vertical migration paths, allowing designers to scale pin counts and memory sizes while maintaining software compatibility. The DA family emphasizes low power consumption and enhanced peripheral integration over previous AVR generations.

Replacement Considerations

AVR128DA64-I/MR serves as a direct substitute with identical specifications but a lower industrial temperature rating (-40°C to +85°C). Verify thermal requirements before swapping. Other AVR DA family members may require pin reconfiguration or code adjustments due to differing I/O counts or peripheral sets.

FAQ

What is the maximum operating frequency of the AVR128DA64-E/MR?

The device runs at a maximum frequency of 24 MHz using the internal high-frequency oscillator.

Does the AVR128DA64 support simultaneous master and slave TWI operation?

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

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

The 64-pin variant provides up to 55 programmable general-purpose I/O pins.