AVR128DA28-E/SS

Overview

The AVR128DA28-E/SS is an 8-bit microcontroller from the AVR DA family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 128 KB of Flash memory, 16 KB of SRAM, and 512 B of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports an extended temperature range of -40°C to +125°C. Key peripherals include a 12-bit ADC with 10 channels, a 10-bit DAC, three analog comparators, one zero-cross detector, and a Peripheral Touch Controller (PTC). Communication interfaces consist of three USARTs, two SPIs, and one TWI/I2C module.

Feature Summary

• Integrates intelligent analog features including a 12-bit differential ADC, 10-bit DAC, and multiple voltage references for high-precision signal processing.
• Supports capacitive touch applications via the Peripheral Touch Controller (PTC) with Driven Shield+ technology.
• Enables low-latency inter-peripheral signaling through the Event System without CPU intervention.
• Provides flexible timing control with Timer/Counter Type A, Type B, and Type D modules optimized for various PWM and capture applications.

Applications

• Smart energy metering and utility monitoring systems
• Industrial motor control and power management circuits
• Consumer appliances requiring capacitive touch interfaces
• Wireless communication stack implementations

Procurement Notes

Verify that the ordering suffix 'E' corresponds to the extended temperature range (-40°C to +125°C) required for your specific application environment. Confirm the 'SS' package designation matches the SSOP-28 footprint on your PCB layout. Ensure compatibility with the Unified Program and Debug Interface (UPDI) protocol used by Microchip programmers. Check for any recent Product Change Notifications (PCN) regarding packaging or material composition updates.

Selection Notes

Select this component when vertical migration within the AVR DA family is needed without code modification. Choose this part if the design requires 128 KB of Flash and 16 KB of SRAM in a compact 28-pin form factor. Consider this MCU for applications demanding high-speed analog conversion and precise touch sensing capabilities alongside standard serial communication interfaces.

Part Context

This device belongs to the AVR128DA28/32/48/64 series, which shares pin and feature compatibility for easy scaling. The AVR DA family utilizes advanced technologies for low-power operation and real-time control. It serves as a modern replacement for legacy 8-bit MCUs, offering enhanced peripheral integration and improved clock accuracy through auto-tuning internal oscillators.

Replacement Considerations

AVR128DA32-E/SS, AVR128DA48-E/SS, AVR128DA64-E/SS