AVR128DB32-I/RXB

Overview

The AVR128DB32-I/RXB is an 8-bit microcontroller from the AVR DB family, featuring a 128 KB Flash program memory, 16 KB SRAM, and 512 bytes of EEPROM. It operates at clock speeds up to 24 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes a 12-bit ADC, 10-bit DAC, three analog comparators, and multiple timers. It utilizes a single-pin UPDI interface for programming and debugging.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on Port C for flexible voltage level interfacing.
• Includes Configurable Custom Logic (CCL) with programmable Look-up Tables for hardware logic implementation.
• Supports Event System for CPU-independent peripheral signaling and low-latency response.

Applications

• Industrial control systems requiring multi-voltage I/O compatibility
• Smart energy metering applications utilizing high-precision analog subsystems
• Motor control designs leveraging advanced digital peripherals and event system

Procurement Notes

Verify the specific suffix 'I/RXB' against official Microchip documentation to confirm industrial temperature range (-40°C to 85°C) and VQFN package type. Ensure ordering details match the exact datasheet revision DS40002247A to avoid discrepancies in pinout or electrical characteristics.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. It is suitable for designs needing 128 KB Flash and 16 KB SRAM in a compact 32-pin footprint. Consider its multi-voltage I/O capabilities if interfacing with mixed-voltage peripherals is necessary.

Part Context

This part belongs to the AVR128DB series, which shares full pin and feature compatibility across the family. It offers horizontal migration options to lower pin counts (AVR128DB28) or vertical scaling to higher capacities (AVR128DB48/64), maintaining software compatibility throughout the transition.

Replacement Considerations

AVR128DB32T-I/RXB is a tape-and-reel variant of the same core device. Other AVR128DB32 variants exist in different packages such as TQFP (e.g., AVR128DB32-I/PT). Verify package dimensions and lead availability before substitution.

FAQ

Does the AVR128DB32 support simultaneous master and slave operation on TWI?

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

What is the maximum operating frequency of the internal oscillator?

The high-precision internal oscillator (OSCHF) supports selectable frequencies up to 24 MHz.

How many channels does the differential ADC have on this device?

The AVR128DB32 features one 12-bit differential ADC with 13 available channels.