AVR128DB64-I/MR

Overview

The AVR128DB64-I/MR is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash memory, 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 temperatures from -40°C to +85°C. It provides up to 55 programmable I/O pins in a 64-pin QFN package. Key peripherals include a 12-bit ADC with 22 channels, a 10-bit DAC, three analog comparators, multiple timers, and communication interfaces such as USART, SPI, and TWI.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on Port C for flexible interface compatibility.
• Includes Analog Signal Conditioning with up to three op amps and internal resistor ladders.
• Supports CPU-independent inter-peripheral signaling via the Event System.
• Integrates Configurable Custom Logic (CCL) with programmable Look-up Tables.

Applications

• Industrial control systems requiring multi-voltage logic levels
• Power management applications utilizing zero-cross detection
• Sensor interfaces leveraging high-resolution differential ADC
• Motor control implementations using optimized PWM timers

Procurement Notes

Verify the specific suffix 'MR' corresponds to the 64-pin QFN package and industrial temperature grade (-40°C to +85°C). Confirm that the ordering code matches the exact pin count and memory configuration required for your design. Ensure compatibility with the Unified Program and Debug Interface (UPDI) tools used for programming and debugging this specific device variant.

Selection Notes

Select this component when vertical migration within the AVR DB family is needed without code modification. It is suitable for designs requiring high I/O counts and advanced analog features like signal conditioning. Consider this part if the application demands low-power sleep modes with peripheral wake-up capabilities or precise timing through the dedicated event system architecture.

Part Context

This device belongs to the AVR128DB28/32/48/64 series, which shares full pin and feature compatibility for easy vertical migration. The AVR DB family utilizes a flexible, low-power architecture with accurate analog subsystems. It represents a modern evolution in Microchip's 8-bit MCU portfolio, integrating advanced digital peripherals alongside the traditional AVR CPU core.

Replacement Considerations

AVR128DB48-I/MR

FAQ

What is the maximum operating frequency of the AVR128DB64-I/MR?

The device runs at clock speeds up to 24 MHz.

Does the AVR128DB64 support simultaneous master and slave operation on I2C?

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 model?

The device provides up to 55/54 programmable I/O pins depending on the specific pin configuration.