AVR16DU20-I/SS

Overview

The AVR16DU20-I/SS is an 8-bit microcontroller from the AVR DU family, featuring a 16 KB Flash memory, 2 KB SRAM, and 256 bytes of EEPROM. It operates at clock speeds up to 24 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes a USB 2.0 full-speed interface, two USARTs, one SPI, one TWI/I2C, and a 10-bit ADC with 11 channels. It utilizes a single-pin UPDI for programming and debugging.

Feature Summary

• Supports in-system self-programmable Flash memory with read-while-write capability
• Integrates a USB 2.0 full-speed device-compliant interface
• Includes Configurable Custom Logic (CCL) with four Look-up Tables
• Features an Event System for CPU-independent peripheral signaling

Applications

• USB-enabled embedded control systems
• Industrial monitoring applications requiring RS-485 or LIN communication
• Low-power battery-operated devices utilizing sleep modes
• Secure firmware upgrade implementations using PDID

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and temperature range. Ensure the component designation matches the exact pin count and memory configuration required for the design. Cross-reference the revision level with the latest preliminary data sheet to account for potential specification updates before finalizing procurement.

Selection Notes

Select this model when a compact 20-pin SSOP package is required alongside integrated USB connectivity. It serves as a suitable choice for designs needing multiple serial interfaces and analog input capabilities within a low pin-count form factor. Consider vertical migration options within the AVR DU family if future memory expansion is anticipated without code modification.

Part Context

This component belongs to the AVR DU family of 8-bit microcontrollers, which share a common architecture and peripheral set across various pin counts and memory sizes. The family emphasizes flexibility through features like the Event System and CCL, allowing for efficient inter-peripheral communication without heavy CPU intervention.

Replacement Considerations

AVR32DU20-I/SS

FAQ

Is the USB function available at all supply voltages?

No, the USB function is only available when the VDD is above 3.0V.

What security mechanism prevents unauthorized access to the Flash memory?

The Program and Debug Interface Disable (PDID) mechanism prevents access to the reprogrammable Flash memory over the UPDI after activation.