AVR64DB64-I/MR

Overview

The AVR64DB64-I/MR is an 8-bit microcontroller from the AVR DB family, featuring a 64 KB Flash memory, 8 KB SRAM, and 512 bytes of EEPROM. It operates at clock speeds up to 24 MHz with a supply voltage range of 1.8V to 5.5V. The device includes a 12-bit differential ADC with 22 channels, three analog comparators, three op amps, and a 10-bit DAC. It provides up to 55/54 programmable I/O pins and supports interfaces including USART, SPI, and TWI/I2C. The component is housed in a VQFN64 package and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Features multi-voltage I/O (MVIO) on Port C with selectable input voltage thresholds for flexible system interfacing.
• Includes an automated cyclic redundancy check (CRCSCAN) for Flash program memory scan to ensure data integrity.
• Supports CPU-independent inter-peripheral signaling through an integrated event system.

Applications

• Industrial control systems requiring robust peripheral integration
• Smart home appliances utilizing multi-voltage logic levels
• IoT devices needing reliable non-volatile memory scanning

Procurement Notes

Verify that the ordering suffix 'I' corresponds to the specified industrial temperature range (-40°C to +85°C). Confirm the '/MR' suffix indicates the VQFN64 package style. Ensure compatibility with existing design constraints regarding the 64-pin form factor before finalizing procurement orders.

Selection Notes

Select this model when 64 KB of Flash memory and a high pin count are required within a compact surface-mount footprint. It is suitable for applications demanding multiple analog inputs and advanced digital peripherals without increasing board space significantly compared to lower pin-count variants.

Part Context

This component belongs to the AVR64DB28/32/48/64 series, which shares architectural compatibility across different pin counts. The 64-pin variant offers the maximum number of general-purpose I/O pins and peripheral channels within this specific memory configuration family.

Replacement Considerations

AVR64DB48-I/MR

FAQ

What does the 'MR' suffix indicate for this part?

The 'MR' suffix designates the VQFN64 package style for the AVR64DB64 microcontroller.

Does this device support simultaneous host and client operation on its I2C interface?

Yes, the TWI/I2C interface can operate simultaneously as a host and client on different pins.