AVR16DD28-I/STX

Overview

The AVR16DD28-I/STX 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 industrial temperatures from -40°C to +85°C. Key peripherals include a 12-bit ADC, 10-bit DAC, analog comparator, zero-cross detector, and multiple timers. It utilizes Multi-Voltage I/O (MVIO) for flexible interfacing.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORTC allows direct connection to devices operating at different voltage levels without external level shifters.
• Configurable Custom Logic (CCL) provides four programmable Look-up Tables (LUTs) for custom digital logic implementation independent of the CPU.
• Event System (EVSYS) enables predictable inter-peripheral signaling and CPU-independent operation to reduce system latency.
• Integrated intelligent analog features including a 12-bit differential ADC, 10-bit DAC, and Zero-Cross Detector (ZCD).

Applications

• Industrial control systems requiring real-time processing and multi-voltage domain interfacing
• Smart home appliances utilizing MVIO for sensor integration
• Automotive applications leveraging functional safety readiness and robust peripheral sets
• IoT devices requiring low-power operation and efficient event-driven architectures

Procurement Notes

Verify the specific ordering suffix STX confirms the VQFN package style and the 'I' suffix indicates the industrial temperature range (-40°C to +85°C). Ensure compatibility with the AVR DD family pinout if migrating from other variants in the series. Confirm that the required memory size (16 KB Flash, 2 KB SRAM) meets application specifications before procurement.

Selection Notes

Select this component when a balance of moderate memory capacity and advanced analog peripherals is required. The 28-pin VQFN package suits space-constrained designs. Consider the AVR16DD28 series for vertical migration within the AVR DD family without code modification. Evaluate the need for Multi-Voltage I/O if interfacing with mixed-voltage sensors or actuators directly.

Part Context

This part belongs to the AVR DD family of 8-bit microcontrollers, designed for high performance and low power consumption. The family shares a common architecture with varying memory sizes and pin counts, allowing for easy horizontal and vertical migration. The AVR16DD28 variant specifically offers 16 KB of Flash, positioning it between the 32 KB and 64 KB options for cost-sensitive applications.

Replacement Considerations

AVR32DD28-I/STX: Offers increased memory (32 KB Flash, 4 KB SRAM) with identical pinout and feature set for upward migration. AVR16DD28-I/SP: Provides the same core functionality but in a 28-SPDIP through-hole package instead of VQFN.