AVR32EA28-E/SP

Overview

The AVR32EA28-E/SP is an 8-bit microcontroller from the AVR EA family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 32 KB of Flash memory with read-while-write capability, 4 KB of SRAM, and 512 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports an extended temperature range of -40°C to +125°C. Peripherals include a 12-bit differential ADC with PGA, a 10-bit DAC, two analog comparators, three USARTs, one SPI, and one TWI interface.

Feature Summary

• Supports true read-while-write operation for non-volatile memory access during program execution
• Integrates a 12-bit differential ADC with programmable gain amplifier for high-resolution signal acquisition
• Features Configurable Custom Logic (CCL) with Look-up Tables for hardware-based logic implementation
• Includes Event System for CPU-independent inter-peripheral signaling

Applications

• Closed-loop control systems requiring real-time processing
• Sensor nodes utilizing high-resolution analog input
• Secondary safety monitoring applications
• Industrial and consumer appliance control units

Procurement Notes

Verify the specific package type associated with the '/SP' suffix against official Microchip documentation before procurement. Confirm that the 'E' designation corresponds to the required extended temperature range specifications for your application environment. Ensure compatibility with existing design constraints regarding pinout and peripheral availability.

Selection Notes

Select this component when extended industrial temperature performance is mandatory alongside standard AVR EA family features. Consider the 28-pin constraint if board space is limited compared to the 32 or 48-pin variants. Evaluate the available I/O count and peripheral set against system requirements to ensure sufficient resources without unnecessary cost overhead.

Part Context

This part belongs to the AVR EA family, which provides vertical migration capabilities across different pin counts and memory sizes without code modification. The AVR32EA28 variant specifically offers 32 KB of Flash and 4 KB of SRAM in a compact 28-pin footprint, serving as a scalable option within the broader AVR EA product line.

Replacement Considerations

AVR32EA28-I/SP

FAQ

What does the 'E' suffix indicate in the part number?

The 'E' suffix indicates that the device is rated for an extended ambient temperature range of -40°C to +125°C.

Does the AVR32EA28 support simultaneous reading and writing to Flash?

Yes, the device features true read-while-write (RWW) capability, allowing code execution from one section while another section is being programmed or erased.