AVR128DA64-I/MR

Overview

The AVR128DA64-I/MR is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash memory, 16 KB of SRAM, and 512 B of EEPROM. The device provides 55 programmable I/O pins in a VQFN-64 package. Key peripherals include a 12-bit differential ADC with 22 channels, three analog comparators, three zero-cross detectors, one 10-bit DAC, and a Peripheral Touch Controller supporting up to 46 self-capacitance and 529 mutual capacitance channels.

Feature Summary

• Integrates intelligent analog features including a 12-bit differential ADC, analog comparators, and zero-cross detectors for precise signal conditioning.
• Supports capacitive touch applications via the Peripheral Touch Controller with Driven Shield+ and Boost Mode technologies.
• Enables CPU-independent inter-peripheral signaling through the Event System and configurable custom logic using Look-up Tables.

Applications

• Wired and wireless communication stack implementations
• Power control systems utilizing optimized Timer/Counter type D
• Capacitive touch interfaces such as buttons, sliders, wheels, and 2D surfaces

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package style and temperature range. Ensure the component matches the required industrial operating specifications. Cross-reference the datasheet revision number to validate peripheral availability and electrical characteristics before finalizing procurement.

Selection Notes

Select this model when high pin count and extensive analog capabilities are required within the AVR DA family. It offers horizontal migration compatibility with lower pin-count variants while maintaining code compatibility. Consider the 12-bit ADC resolution and multiple voltage references if high-precision signal acquisition is necessary for the application design.

Part Context

This component belongs to the AVR128DA28/32/48/64 series, which shares a common architecture and instruction set. The devices allow vertical migration without code modification due to full pin and feature compatibility across the family. The AVR128DA64 variant specifically provides the highest pin count and peripheral density within this memory configuration tier.

Replacement Considerations

AVR128DA64-E/MR

FAQ

What is the maximum clock frequency of the AVR128DA64-I/MR?

The AVR CPU runs at a maximum frequency of 24 MHz.

How many general-purpose I/O pins does this device provide?

The device provides up to 55 programmable general-purpose I/O pins.

Does the AVR128DA64 support capacitive touch sensing?

Yes, it includes a Peripheral Touch Controller (PTC) with Driven Shield+ and Boost Mode technologies for capacitive touch applications.