AVR32DA28-E/SO

Overview

The AVR32DA28-E/SO is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB of self-programmable Flash memory, 4 KB of SRAM, and 512 B of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports extended temperature ranges up to +125°C. Key peripherals include a 12-bit differential ADC, a 10-bit DAC, three analog comparators, multiple timers, USARTs, SPI, TWI interfaces, and a Peripheral Touch Controller.

Feature Summary

• Supports vertical migration across the AVR DA(S) family without code modification due to full pin and feature compatibility.
• Integrates intelligent analog features including a 12-bit differential ADC with programmable gain amplifier and a 10-bit DAC.
• Provides advanced digital peripherals such as Configurable Custom Logic (CCL) and an Event System for low-latency inter-peripheral signaling.
• Includes security mechanisms like Program and Debug Interface Disable (PDID) for secure firmware upgrades.

Applications

• Industrial control systems requiring robust I/O and communication interfaces
• Consumer electronics utilizing capacitive touch controls via the Peripheral Touch Controller
• Smart home appliances needing multi-voltage operation and low-power modes
• IoT devices requiring secure boot and firmware update capabilities

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature range. The 'E' suffix indicates extended temperature range (-40°C to +125°C), while 'SO' denotes the SOIC package. Ensure that any required security features like PDID are enabled in the configuration fuses during production programming. Cross-reference the datasheet revision to ensure compatibility with existing design documentation.

Selection Notes

Select this component when a balance of processing speed and peripheral richness is needed in a compact 28-pin package. It is suitable for designs requiring vertical migration flexibility within the AVR DA family. Consider the 1.8V to 5.5V operating range for applications with varying power domains. Evaluate the need for the Peripheral Touch Controller if user interface elements are planned.

Part Context

This device belongs to the AVR DA(S) family, which utilizes the latest Microchip technologies for flexible, low-power architectures. The family offers horizontal and vertical migration paths, allowing designers to scale pin counts and memory sizes while maintaining software compatibility. The AVR32DA series specifically targets applications needing high performance per watt with extensive analog and digital integration.

Replacement Considerations

AVR64DA28-E/SO

FAQ

Does the AVR32DA28-E/SO support vertical migration to other devices in the AVR DA family?

Yes, the AVR DA(S) family is designed for vertical migration without code modification, as devices share fully compatible pins and features.

What is the maximum clock frequency of the AVR32DA28-E/SO?

The AVR CPU runs at a maximum frequency of 24 MHz.

Is the Program and Debug Interface Disable (PDID) feature available on the standard AVR32DA28?

No, PDID is only available on AVR DAS devices. The standard AVR32DA28 does not include this specific security feature.