ATTINY3226-SFR

Overview

The ATtiny3226-SFR is a member of the tinyAVR® 2 family, featuring an 8-bit AVR CPU with hardware multiplier running at up to 20 MHz. It provides 32 KB Flash, 3 KB SRAM, and 256B EEPROM in a 20-pin package. The device includes a 12-bit differential ADC with PGA, Event System, CCL, USART, SPI, TWI, TCA, TCB, RTC, UPDI, and external interrupts on all I/O pins.

Feature Summary

• Features a high-performance low-power AVR CPU with single-cycle I/O access and two-level interrupt controller
• Includes advanced digital peripherals such as Event System, Configurable Custom Logic (CCL), and multiple timers/counters
• Provides accurate analog features including a 12-bit differential ADC with Programmable Gain Amplifier (PGA)
• Supports flexible clock options and three sleep modes for optimized power management

Applications

• General-purpose embedded control systems
• Battery-powered applications requiring low power consumption
• Industrial monitoring and sensor interfaces
• Consumer electronics with programmable logic needs

Procurement Notes

Verify the specific suffix 'SFR' against official Microchip documentation to confirm package type (likely SOIC or SSOP) and temperature range (-40°C to +85°C). Ensure compatibility with existing designs by checking pinout and peripheral availability for the 20-pin variant. Confirm ordering details directly with authorized distributors.

Selection Notes

Select this component when 32 KB Flash and 20 I/O pins are required within a 20-pin footprint. It offers vertical migration compatibility with other tinyAVR 2 devices without code modification. Consider the 12-bit ADC and Event System if complex signal processing or inter-peripheral signaling is needed.

Part Context

Part of the tinyAVR 2 family, designed for cost-sensitive applications needing enhanced performance over previous generations. The 20-pin variant balances feature density with compact packaging. Compatible with standard development tools supporting the UPDI interface.

Replacement Considerations

Direct pin-compatible replacements within the same family include ATtiny3224 (14-pin) and ATtiny3227 (24-pin), though pin counts differ. For horizontal migration, smaller flash variants like ATtiny1626 may be considered if memory requirements allow.