AVR64EA28-E/SP

Overview

The AVR64EA28-E/SP is an 8-bit microcontroller from the AVR EA family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 64 KB of Flash memory with read-while-write capability, 6 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 extended industrial temperatures (-40°C to +125°C). Key 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

• Features true read-while-write operation for non-volatile memory access during program execution.
• Includes a 12-bit differential ADC with programmable gain amplifier for high-precision signal conditioning.
• Supports CPU-independent inter-peripheral signaling via the Event System.
• Provides Configurable Custom Logic (CCL) with multiple programmable look-up tables.

Applications

• Closed-loop control systems
• Sensor nodes
• Secondary safety monitoring equipment

Procurement Notes

Verify the 'E' suffix confirms the extended temperature rating of -40°C to +125°C. Confirm the '/SP' suffix corresponds to the SPDIP package type. Ensure the specific revision matches the preliminary data sheet DS40002443A requirements for your design.

Selection Notes

Select this part for applications requiring simultaneous code execution and flash updates. The extended temperature range suits harsh environments. Verify that the 28-pin count meets I/O requirements compared to the 32 or 48-pin variants in the same family.

Part Context

This component belongs to the AVR64EA28/32/48 series, which offers vertical migration without code modification. It shares the same core architecture as lower-memory devices but provides increased storage capacity. The device utilizes the Unified Program and Debug Interface (UPDI) for programming.

Replacement Considerations

AVR64EA28-I/SP

FAQ

Does the device support reading Flash while writing to it?

Yes, the AVR64EA28-E/SP features true read-while-write operation, allowing code execution from other sections while programming.

What is the maximum operating frequency?

The internal oscillator can be configured to run at frequencies up to 20 MHz.