ATTINY3226-SU

Overview

The ATtiny3226-SU is a 20-pin microcontroller from the tinyAVR® 2 family, featuring an AVR CPU with hardware multiplier running at up to 20 MHz. It includes 32 KB Flash, 3 KB SRAM, and 256B EEPROM. The device offers 18 general-purpose I/O pins and supports a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, CCL, and an Event System.

Feature Summary

• Features a high-performance low-power AVR CPU with single-cycle I/O access and a two-cycle hardware multiplier.
• Includes advanced analog features such as a 12-bit differential ADC with Programmable Gain Amplifier (PGA) and multiple internal voltage references.
• Supports flexible inter-peripheral signaling through an integrated Event System and Configurable Custom Logic (CCL).
• Provides versatile communication interfaces including dual USARTs, SPI, and TWI with dual address match capabilities.

Applications

• Industrial control systems requiring robust peripheral integration
• Battery-powered devices utilizing low-power sleep modes
• Sensor interface applications leveraging the differential ADC
• Automotive electronics using AEC-Q100 qualified variants

Procurement Notes

Verify the specific ordering suffix for package type and temperature range. The 'SU' designation indicates a SOIC-20 package with industrial temperature range (-40°C to +85°C). Confirm availability of automotive VAO variants if AEC-Q100 qualification is required. Check datasheet for pinout compatibility with existing designs.

Selection Notes

Select this model for applications needing vertical migration within the tinyAVR 2 family without code modification. Consider the 20-pin form factor for balanced I/O count and memory size. Evaluate speed grades against operating voltage requirements, noting that 20 MHz operation requires 4.5V to 5.5V supply.

Part Context

Part of the tinyAVR 2 family, designed for enhanced performance and low power consumption. It shares architectural similarities with ATtiny3224 and ATtiny3227 but differs in pin count and available I/O resources. The family emphasizes flexibility through event-driven architecture and comprehensive peripheral sets.

Replacement Considerations

ATtiny3224-SU and ATtiny3227-SU are pin-compatible within their respective pin counts but differ in I/O availability. Direct replacement requires verifying pin mapping and peripheral allocation. No other direct substitutes are documented in the provided source material.