AVR32EA28T-E/STX

Overview

The AVR32EA28T-E/STX 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 extended temperature ranges up to +125°C. Key peripherals include a 12-bit differential ADC with PGA, a 10-bit DAC, two analog comparators, three USARTs, SPI, TWI/I2C, and an Event System for inter-peripheral signaling.

Feature Summary

• Features a flexible low-power architecture with an Event System for CPU-independent peripheral signaling.
• Includes intelligent analog subsystems such as a 12-bit differential ADC with programmable gain amplifier and window compare functions in analog comparators.
• Supports advanced digital peripherals including Configurable Custom Logic (CCL) with Look-up Tables and multiple timer/counters for PWM generation.

Applications

• Real-time control systems requiring efficient processing and precise timing.
• Sensor nodes utilizing high-resolution analog-to-digital conversion capabilities.
• Secondary safety monitoring applications due to robust clock failure detection and voltage monitoring features.

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging and 'STX' denotes the VQFN package type. Confirm the 'E' suffix corresponds to the extended industrial temperature range (-40°C to +125°C). Ensure compatibility with existing design footprints for the 28-pin VQFN form factor before finalizing procurement orders.

Selection Notes

Select this component when vertical migration within the AVR EA family is required without code modification. Choose this part if the application demands simultaneous read-while-write operations on Flash memory or requires specific pin counts available only in the 28-pin variant. Consider the extended temperature rating for harsh environmental conditions.

Part Context

This device belongs to the AVR EA family, which shares architectural similarities with other members like the AVR32EA32 and AVR64EA28. It offers horizontal migration options to lower pin count devices such as the AVR16EA28, though feature sets may vary. The family emphasizes flexibility through consistent pinouts across different memory sizes.

Replacement Considerations

AVR32EA28-E/STX