AVR16EA28-E/STX

Overview

The AVR16EA28-E/STX is an 8-bit microcontroller from the AVR EA family, featuring a 20 MHz AVR 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 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, 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 independent of the CPU.
• Includes accurate analog subsystems such as a 12-bit differential ADC with programmable gain amplifier and window compare functions in analog comparators.
• Supports vertical migration without code modification across the AVR EA family due to full pin and feature compatibility.
• Provides advanced digital peripherals including Configurable Custom Logic (CCL) with programmable Look-up Tables.

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 leveraging robust system protection features.
• Industrial and automotive environments operating under extended temperature conditions.

Procurement Notes

Verify the specific ordering suffixes against official Microchip documentation to confirm package type and carrier configuration. Ensure the 'E' designation matches the required extended temperature range specifications for your application environment. Cross-reference the datasheet revision to confirm all peripheral availability and electrical characteristics before finalizing procurement orders.

Selection Notes

Select this component when design requirements necessitate vertical scalability within the AVR EA family without altering existing firmware or board layouts. Consider the integrated analog peripherals if signal conditioning is needed directly at the input stage. Evaluate the power consumption profiles across different sleep modes to ensure compliance with energy efficiency targets in battery-operated or low-power stationary devices.

Part Context

This device belongs to the AVR EA family, which utilizes the latest Microchip technologies for enhanced performance and flexibility. The family shares a common instruction set and peripheral architecture, allowing developers to scale projects between different memory sizes and pin counts seamlessly while maintaining software compatibility.

Replacement Considerations

AVR16EA28-E/SS

FAQ

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

Yes, the TWI/I2C interface supports dual address match and can operate simultaneously as both a host and a client on different pins.

What is the maximum clock frequency supported by the AVR16EA28-E/STX?

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