AVR32DB28T-E/SS

Overview

The AVR32DB28T-E/SS is an 8-bit microcontroller from the AVR DB family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB Flash, 4 KB SRAM, and 512 B EEPROM in a 28-pin SSOP package. The device supports a supply voltage range of 1.8 V to 5.5 V and operates within an extended temperature range of -40°C to +125°C. Key peripherals include a 12-bit ADC, three analog comparators, one DAC, three op amps, and multiple communication interfaces.

Feature Summary

• Features Multi-Voltage I/O (MVIO) on Port C for flexible voltage level interfacing.
• Includes an Analog Signal Conditioning peripheral with up to three op amps and internal resistor ladders.
• Supports CPU-independent inter-peripheral signaling via an integrated Event System.
• Provides automated cyclic redundancy check (CRC) scanning for Flash program memory integrity.

Applications

• Industrial control systems requiring robust signal conditioning
• Home appliances operating under varying voltage conditions
• IoT devices needing reliable non-volatile data retention

Procurement Notes

Verify the ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C). Confirm the '/SS' designation matches the required SSOP-28 package type. Ensure the 'T' indicates tape and reel packaging if applicable to your assembly process. Cross-reference the datasheet revision DS40002301B for specific electrical characteristics.

Selection Notes

Select this part when extended temperature operation is mandatory alongside multi-voltage I/O requirements. The inclusion of three op amps and a differential ADC makes it suitable for precision analog applications. Consider vertical migration within the AVR DB family if future pin compatibility or memory expansion is needed without code modification.

Part Context

This component belongs to the AVR DB microcontroller family, which utilizes the latest Microchip technologies for low-power and high-performance operations. The family offers horizontal and vertical migration paths, allowing designers to scale pin counts and memory sizes while maintaining feature compatibility across different package options.

Replacement Considerations

AVR64DB28T-E/SS

FAQ

What is the maximum clock frequency supported by the AVR32DB28T-E/SS?

The device features an AVR CPU running at clock speeds up to 24 MHz.

Does the AVR32DB28T-E/SS support simultaneous host and client operation on TWI/I2C?

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

How many General Purpose I/O pins are available on the 28-pin variant?

The AVR32DB28 provides up to 22 general-purpose I/O pins, with PF6 serving as an input-only RESET pin.