AVR32DD20-I/SO

Overview

The AVR32DD20-I/SO is an 8-bit microcontroller from the AVR DD family, featuring a 24 MHz AVR CPU with hardware multiplier. It includes 32 KB of Flash memory, 4 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 with 13 channels, a 10-bit DAC, two USARTs, SPI, TWI/I2C, and Multi-Voltage I/O (MVIO). It is housed in a 20-pin SOIC package.

Feature Summary

• Multi-Voltage I/O (MVIO) capability on PORT C enables bidirectional communication across different power domains without external level shifters.
• Integrated intelligent analog features including a 12-bit differential ADC, 10-bit DAC, Zero-Cross Detector (ZCD), and Analog Comparator.
• Configurable Custom Logic (CCL) provides four programmable Look-Up Tables for custom digital logic implementation independent of the CPU.
• Event System (EVSYS) allows peripheral-to-peripheral signaling to reduce system latency and CPU intervention.

Applications

• Industrial control systems requiring real-time processing and noise immunity
• Smart home appliances and IoT devices with multi-voltage domain requirements
• Automotive applications utilizing zero-cross detection for AC load control
• Battery-powered sensors leveraging low-power sleep modes

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature grade. Ensure compatibility with existing design constraints regarding pinout and memory size. Cross-reference datasheet DS40002315 for complete electrical characteristics and timing diagrams before finalizing procurement specifications.

Selection Notes

Select this component when a balance of moderate memory capacity and advanced analog peripherals is required. The 20-pin form factor suits space-constrained designs needing MVIO flexibility. Consider vertical migration within the AVR DD family if future projects demand increased Flash or I/O counts without code modification.

Part Context

This part belongs to the AVR DD family, which emphasizes high performance and low power consumption through its Cortex-like architecture adapted for 8-bit efficiency. The series integrates smart analog capabilities and robust connectivity options, targeting modern embedded applications that require precise signal conditioning and reliable communication interfaces.

Replacement Considerations

AVR32DD20T-I/SO offers identical functionality in tape-and-reel packaging suitable for automated assembly processes.

FAQ

Does the AVR32DD20 support simultaneous host and client operation on its I2C interface?

Yes, the TWI/I2C peripheral supports dual address match and can operate simultaneously as both host and client on different pins.

What is the maximum operating frequency of the AVR CPU in this device?

The AVR CPU runs at clock speeds up to 24 MHz.

How many general-purpose I/O pins are available on the AVR32DD20?

The device provides 16 programmable general-purpose I/O pins.