AVR16EA28-I/STX

Overview

The AVR16EA28-I/STX is an 8-bit microcontroller from the AVR EA family, featuring a 20 MHz CPU with hardware multiplier. It includes 16 KB of Flash memory with read-while-write capability, 2 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 temperatures from -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 window-compare analog comparators.
• Supports vertical migration within the AVR EA family through fully pin and feature compatible designs across different memory sizes.

Applications

• Industrial control systems requiring robust analog signal processing
• Battery-powered devices utilizing low-power sleep modes
• Smart sensors using event-driven peripheral communication

Procurement Notes

Verify that the ordering suffix matches the required package type (STX indicates VQFN) and temperature grade (I for Industrial). Confirm the preliminary status of the datasheet against final production specifications before committing to design-in. Ensure compatibility with UPDI programming tools for development and debugging.

Selection Notes

Select this component when a balance of moderate Flash capacity and advanced analog features is needed in a compact 28-pin form factor. Consider the AVR16EA28 over larger variants if pin count constraints exist, while retaining access to the full EA family peripheral set including the Event System and CCL.

Part Context

This device belongs to the AVR EA family, which utilizes the latest Microchip technologies for low-power applications. It shares architectural similarities with the AVR32EA and AVR64EA series, allowing for code reuse and easy migration between devices with varying memory capacities but identical pinouts.

Replacement Considerations

AVR16EA32-I/STX

FAQ

Does the AVR16EA28 support simultaneous host and client operation on its I2C interface?

Yes, the TWI/I2C interface supports dual mode operation, allowing it to function independently as both a host and a client on different pins.

What is the maximum clock frequency for the AVR16EA28?

The AVR CPU runs at a maximum clock speed of 20 MHz.