AVR32DB48-E/PT

Overview

The AVR32DB48-E/PT is an 8-bit microcontroller from the AVR DB family, featuring a 32 KB Flash program memory, 4 KB SRAM, and 512 bytes of EEPROM. It utilizes an AVR CPU core with a hardware multiplier, operating at clock speeds up to 24 MHz. The device is housed in a TQFP-48 package and supports a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit ADC with 18 channels, three op amps, two zero-cross detectors, a 10-bit DAC, and multiple communication interfaces such as USART, SPI, and TWI.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on Port C for flexible voltage level interfacing.
• Includes an Event System for CPU-independent inter-peripheral signaling.
• Integrates Configurable Custom Logic (CCL) with programmable Look-up Tables.
• Supports automated CRC scanning of Flash program memory.

Applications

• Industrial control systems requiring robust analog signal processing.
• Power management applications utilizing zero-cross detection and op amp conditioning.
• Embedded devices needing low-power operation with extended temperature tolerance.
• Communication nodes using USART, SPI, or TWI interfaces.

Procurement Notes

Verify the ordering suffix 'E' confirms the -40°C to +125°C extended temperature range and 'PT' indicates the TQFP package. Confirm RoHS compliance status through official Microchip documentation. Ensure the specific revision DS40002301B matches your design requirements. Cross-reference pinouts and electrical characteristics directly with the datasheet before finalizing procurement.

Selection Notes

Select this component when vertical migration within the AVR DB family is required without code modification. Choose the extended temperature variant for environments exceeding standard industrial limits. Consider the 48-pin count for increased I/O availability compared to smaller packages. Evaluate the 12-bit ADC resolution and op amp configurations against application signal conditioning needs.

Part Context

This part belongs to the AVR32DB28/32/48 series within the broader AVR DB microcontroller family. It shares architectural compatibility with AVR64DB and AVR128DB variants, allowing for horizontal and vertical migration. The device leverages advanced digital peripherals and accurate analog subsystems typical of the latest AVR technologies.

Replacement Considerations

AVR64DB48-E/PT offers higher memory capacity with identical pinout and feature sets. AVR128DB48-E/PT provides further memory expansion while maintaining compatibility. Smaller pin-count variants like AVR32DB32 require schematic redesign due to reduced I/O availability.

FAQ

What is the maximum operating frequency of the AVR32DB48-E/PT?

The AVR CPU runs at clock speeds up to 24 MHz.

Does the device support simultaneous host and client operation on TWI?

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

How many General Purpose I/O pins are available?

The device provides up to 41/40 programmable I/O pins.