AVR128DB64T-I/MR

Overview

The AVR128DB64T-I/MR is an 8-bit microcontroller from the AVR DB family, utilizing an AVR CPU with a hardware multiplier operating at up to 24 MHz. It features 128 KB of Flash memory, 16 KB of SRAM, and 512 bytes of EEPROM. The device is housed in a 64-pin QFN package (MR suffix) and supports a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit differential ADC with 22 channels, a 10-bit DAC, three analog comparators, and multiple timer/counters.

Feature Summary

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

Applications

• Industrial control systems requiring multi-voltage I/O compatibility
• Power control applications utilizing the optimized 12-bit Timer/Counter Type D
• Sensor interfaces leveraging the high-resolution differential ADC and signal conditioning
• Embedded systems needing low-power operation with configurable sleep modes

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to ensure correct package type and temperature rating. Confirm that the 'I' designation matches the required industrial temperature range for your application environment. Cross-reference the datasheet revision to ensure all electrical characteristics align with your design specifications before finalizing procurement.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. Consider this part for designs needing a balance of analog precision and digital flexibility. Evaluate the pin count and available I/O resources against the specific interface requirements of the target system to ensure optimal utilization of the 64-pin form factor.

Part Context

This device belongs to the AVR128DB28/32/48/64 series, which shares a common architecture and instruction set. The AVR DB family emphasizes low power consumption and advanced analog capabilities compared to previous generations. It serves as a modern replacement for legacy AVR devices in applications demanding higher performance and integrated signal processing features.

Replacement Considerations

Devices such as AVR128DB48 or AVR128DB32 offer horizontal migration paths with reduced pin counts and feature sets while maintaining software compatibility. Ensure that the alternative package type meets the physical footprint constraints of the existing PCB layout if substituting with a different variant.