ATTINY3226-SUR

Overview

The ATtiny3226-SUR is an 8-bit microcontroller from the tinyAVR® 2 family, featuring a 20-pin package with 18 general-purpose I/O pins. It includes 32 KB of self-programmable Flash memory, 3 KB of SRAM, and 256B of EEPROM. The device operates at frequencies up to 20 MHz with a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, and an Event System.

Feature Summary

• Features a high-performance AVR CPU with hardware multiplier and single-cycle I/O access for efficient processing.
• Includes advanced analog capabilities with a 12-bit differential ADC supporting programmable gain amplification.
• Supports flexible inter-peripheral signaling through a dedicated Event System without CPU intervention.
• Provides versatile communication interfaces including dual USARTs, SPI, and TWI with multiple speed modes.

Applications

• Sensor nodes requiring low power consumption and reliable operation in harsh environments
• Industrial control systems utilizing configurable custom logic and event-driven architectures
• Battery-powered devices benefiting from extended data retention and multiple sleep modes

Procurement Notes

Verify that the ordering suffix matches the required package type and temperature grade. Confirm the presence of the Tape & Reel identifier if automated assembly is planned. Ensure compatibility with existing design constraints regarding pin count and peripheral availability before finalizing procurement orders.

Selection Notes

Select this model when vertical migration within the tinyAVR 2 family is desired without code modification. Choose this variant over smaller memory options if 32 KB Flash and 3 KB SRAM are necessary. Consider the 20-pin form factor for designs requiring 18 I/O lines while maintaining compact board space.

Part Context

This component belongs to the tinyAVR® 2 family, which offers horizontal and vertical migration paths. The ATtiny3226 provides a balance between pin count and feature set compared to the 14-pin ATtiny3224 and 24-pin ATtiny3227. All devices share compatible architecture and instruction sets.

Replacement Considerations

Direct substitutes within the same family include ATtiny3224 and ATtiny3227, provided pin count adjustments are acceptable. Verify that alternative packages meet the specific thermal and mechanical requirements of the target application.

FAQ

Does the ATtiny3226 support vertical migration?

Yes, the device allows vertical migration within the tinyAVR 2 family without requiring code modifications due to full pin and feature compatibility.

What is the maximum operating frequency?

The microcontroller can run at frequencies up to 20 MHz depending on the supply voltage and temperature grade selected.