AVR16DD28-I/SS

Overview

The AVR16DD28-I/SS is an 8-bit microcontroller from the AVR DD family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 16 KB of Flash memory, 2 KB of SRAM, and 256 bytes of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports up to 22 general-purpose I/O pins. Key peripherals include a 12-bit ADC, 10-bit DAC, two USARTs, SPI, TWI/I2C, and a Zero-Cross Detector. It utilizes Multi-Voltage I/O (MVIO) for flexible interfacing and is housed in a 28-pin SSOP package.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORT C enables direct communication across different power domains without external level shifters.
• Integrated intelligent analog features including a 12-bit differential ADC, 10-bit DAC, Analog Comparator, and Zero-Cross Detector.
• Advanced digital peripherals such as Configurable Custom Logic (CCL) and Event System (EVSYS) reduce CPU load and system latency.
• Single-pin Unified Program and Debug Interface (UPDI) simplifies programming and debugging workflows.

Applications

• Industrial control systems requiring robust noise immunity
• Smart home appliances with multi-voltage domain requirements
• IoT devices utilizing low-power sleep modes
• Automotive applications supporting safety-critical functions

Procurement Notes

Verify the ordering suffix 'I' confirms the industrial temperature range of -40°C to +85°C. Confirm the 'SS' suffix indicates the 28-pin SSOP package style. Ensure the part number matches the specific memory configuration of 16 KB Flash. Cross-reference the datasheet revision DS40002441B for accurate electrical specifications.

Selection Notes

Select this component when vertical migration within the AVR DD family is required without code modification. Choose this model if MVIO functionality is necessary for mixed-signal or multi-domain designs. Consider this MCU for applications needing high-performance analog peripherals like ZCD and 12-bit ADC alongside standard communication interfaces.

Part Context

This device belongs to the AVR DD family, which offers pin-and-feature compatibility across variants. It shares architectural similarities with AVR32DD28 and AVR64DD28 models, allowing for scalable design transitions. The family emphasizes low-power performance and advanced peripheral integration for modern embedded applications.

Replacement Considerations

AVR16DD28T-E/SS: Extended temperature variant (-40°C to +125°C). AVR32DD28-I/SS: Higher memory capacity (32 KB Flash, 4 KB RAM). AVR16DD28-I/SP: Through-hole SPDIP package alternative.

FAQ

Does the AVR16DD28-I/SS support simultaneous host and client operation on its I2C interface?

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

What is the maximum clock frequency of the AVR16DD28-I/SS?

The AVR CPU runs at a maximum clock speed of 24 MHz.

Can the user row data be retained during a chip erase?

Yes, the 32-byte user row in nonvolatile memory can retain data during chip erase and can be programmed while the device is locked.