AVR32EA28T-I/STX

Overview

The AVR32EA28T-I/STX is an 8-bit microcontroller from the AVR EA family, featuring a CPU with hardware multiplier running at up to 20 MHz. 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 industrial temperature ranges (-40°C to +85°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 predictable inter-peripheral signaling without CPU intervention.
• Includes accurate analog subsystems such as a 12-bit differential ADC with programmable gain amplifier and a 10-bit DAC.
• Supports vertical migration within the AVR EA family without code modification due to full pin and feature compatibility.
• Provides advanced digital peripherals including Configurable Custom Logic (CCL) with programmable Look-up Tables.

Applications

• Industrial control systems requiring robust peripheral interfaces
• Smart energy metering applications utilizing precise analog measurement capabilities
• Consumer electronics needing low-power operation and extended temperature tolerance

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape and reel packaging configuration. Confirm the 'I' suffix corresponds to the industrial temperature range requirements for your application environment. Ensure the STX package designation matches your PCB footprint specifications before finalizing procurement orders.

Selection Notes

Select this component when vertical migration within the AVR EA family is required without code changes. Choose this part if the design demands a 12-bit differential ADC with PGA or specific analog comparator features. Consider this MCU for applications needing simultaneous host and client TWI operations or extensive event-driven peripheral communication.

Part Context

This device belongs to the AVR EA 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 across different package options like VQFN, SPDIP, and SSOP.

Replacement Considerations

AVR32EA28-E/STX

FAQ

What is the maximum clock frequency of the AVR32EA28T-I/STX?

The AVR CPU in this microcontroller runs at clock speeds up to 20 MHz.

Does the AVR32EA28 support simultaneous TWI host and client operations?

Yes, the TWI interface supports independent host and client operation on different pins, known as dual mode.