AVR64DD28-I/SP

Overview

The AVR64DD28-I/SP is an 8-bit microcontroller from the AVR DD family, utilizing an AVR CPU with a hardware multiplier operating at up to 24 MHz. It features 64 KB of in-system self-programmable Flash memory, 8 KB of SRAM, and 256 bytes of EEPROM. The device is housed in a 28-pin SPDIP package and supports a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit ADC with 19 channels, a 10-bit DAC, three USARTs, SPI, TWI/I2C, and an Event System.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORT C allows direct communication with devices operating at different voltage levels without external level shifters.
• Configurable Custom Logic (CCL) provides four programmable Look-up Tables for implementing complex digital logic functions independently of the CPU.
• Integrated Event System enables predictable inter-peripheral signaling and reduces system latency by allowing peripherals to trigger actions without CPU intervention.

Applications

• Industrial control systems requiring robust noise immunity and multi-voltage domain interfacing
• Smart home appliances and IoT nodes needing low-power operation and versatile analog signal conditioning
• Real-time motor control applications utilizing optimized PWM timers and zero-cross detection

Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range of -40°C to +85°C. Confirm the 'SP' designation corresponds to the 28-pin SPDIP through-hole package. Ensure compatibility with existing design footprints and programming interfaces before finalizing procurement orders.

Selection Notes

Select this component when 64 KB of program memory and 8 KB of RAM are required within a 28-pin footprint. The inclusion of Multi-Voltage I/O makes it suitable for designs interfacing with mixed-voltage sensors or actuators. Consider the availability of 19 ADC channels if extensive analog input monitoring is necessary.

Part Context

This part belongs to the AVR DD family, which emphasizes intelligent analog features and advanced digital peripherals. The family supports vertical migration between pin counts without code modification, ensuring feature compatibility across variants like the AVR32DD28 and AVR16DD28.

Replacement Considerations

AVR32DD28-I/SP: Offers identical pinout and peripheral set but with reduced memory capacity (32 KB Flash, 4 KB SRAM).

FAQ

Does the AVR64DD28 support simultaneous host and client operation on its TWI interface?

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

What is the maximum sampling rate of the ADC on this device?

The 12-bit differential Analog-to-Digital Converter operates at a maximum sampling rate of 130 ksps.