AVR16DD20-E/SO

Overview

The AVR16DD20-E/SO is an 8-bit microcontroller from the AVR DD family, featuring a 32 KB Flash memory, 4 KB SRAM, and 256 bytes of EEPROM. It operates at a maximum clock frequency of 24 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes a 12-bit ADC with 13 channels, a 10-bit DAC, two USARTs, SPI, TWI/I2C interfaces, and Multi-Voltage I/O (MVIO). It is housed in a SOIC-20 package and supports an extended operating temperature range of -40°C to +125°C.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORT C enables true level-shifted bidirectional communication across different power domains without external level shifters.
• Integrated intelligent analog peripherals including a 12-bit differential ADC, 10-bit DAC, Analog Comparator, and Zero-Cross Detector for precise signal processing.
• Configurable Custom Logic (CCL) with four Look-Up Tables allows hardware-level logic implementation to reduce CPU load and system latency.
• Event System provides CPU-independent inter-peripheral signaling for predictable real-time control and reduced interrupt overhead.

Applications

• Industrial control systems requiring robust noise immunity and multi-voltage domain interfacing
• Smart home appliances and IoT devices utilizing low-power sleep modes and integrated sensors
• Automotive applications needing extended temperature range operation and safety-critical features
• Real-time control loops using hardware timers and event-driven peripheral interactions

Procurement Notes

Verify the ordering suffix 'E' confirms the extended temperature range (-40°C to +125°C) and 'SO' indicates the SOIC-20 package. Confirm that the specific revision matches the required datasheet version DS40002315. Ensure compatibility with UPDI programming tools for single-pin debugging and flashing. Check for RoHS compliance documentation if required by your manufacturing standards.

Selection Notes

Select this component when vertical migration within the AVR DD family is needed without code modification. Choose this model over smaller pin-count variants if 13 ADC channels and MVIO support are required. Consider the 32 KB Flash size for applications needing moderate program storage. Verify that the 24 MHz maximum frequency meets the timing requirements of the target application.

Part Context

This part belongs to the AVR DD family, which emphasizes low-power performance and intelligent analog features. The family supports vertical migration between 14, 20, 28, and 32-pin devices with full pin and feature compatibility. The AVR16DD20 variant specifically offers a balance of memory and I/O capabilities in a compact 20-pin package, suitable for space-constrained designs.

Replacement Considerations

AVR32DD20-E/SO: Offers increased memory (64 KB Flash, 8 KB SRAM) with identical pinout and features. AVR16DD20T-E/SO: Same electrical specifications but supplied in Tape & Reel packaging instead of Tube.

FAQ

Does the AVR16DD20 support bidirectional communication between different voltage domains?

Yes, the Multi-Voltage I/O (MVIO) feature on PORT C allows for true level-shifted bidirectional communication with devices operating at different supply voltages without external level shifters.

What is the maximum operating temperature for the AVR16DD20-E/SO?

The 'E' suffix indicates an extended temperature range, allowing operation up to +125°C.

Can the Event System be used to trigger peripherals without CPU intervention?

Yes, the Event System provides CPU-independent and predictable inter-peripheral signaling, allowing peripherals to communicate directly without consuming CPU cycles.