AVR64DD28-I/STX

Overview

The AVR64DD28-I/STX is an 8-bit microcontroller from the AVR® DD Family, featuring a 28-pin VQFN package. It utilizes an AVR CPU with a hardware multiplier, operating at clock speeds up to 24 MHz across a supply voltage range of 1.8V to 5.5V. The device includes 64 KB of in-system self-programmable Flash memory, 8 KB of SRAM, and 256 bytes of EEPROM. Key peripherals include a 12-bit differential ADC with 19 channels, a 10-bit DAC, two USARTs, one SPI, and one TWI interface.

Feature Summary

• Supports multi-voltage I/O (MVIO) on Port C for flexible interfacing.
• Includes an Event System for CPU-independent inter-peripheral signaling.
• Features Configurable Custom Logic (CCL) with four programmable Look-up Tables.

Applications

• Industrial control systems
• Smart home appliances
• Internet of Things (IoT) devices

Procurement Notes

Verify the specific ordering suffix 'STX' corresponds to the VQFN-28 package configuration. Confirm that the 'I' designation matches the required industrial temperature range of -40°C to +85°C for your application environment. Ensure compatibility with the Unified Program and Debug Interface (UPDI) used for programming and debugging this device family.

Selection Notes

Select this component when vertical migration within the AVR DD Family is required without code modification. It is suitable for designs needing high pin counts relative to package size, offering 23 or 22 general-purpose I/O pins. Consider its low-power architecture and event system capabilities if real-time peripheral interaction without CPU intervention is necessary.

Part Context

This part belongs to the AVR64DD32/28 series, which shares architectural similarities with other AVR DD devices like the AVR32DD28 and AVR16DD28. These devices offer horizontal migration options by reducing pin counts while maintaining software compatibility. The STX suffix specifically identifies the 28-pin Very Thin Quad Flat No-Lead package variant.

Replacement Considerations

AVR64DD28-I/SS

FAQ

What is the maximum clock frequency for the AVR64DD28-I/STX?

The device supports clock speeds up to 24 MHz using the internal high-frequency oscillator.

Does this MCU support simultaneous host and client operation on the TWI interface?

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