ATTINY3224-XU

Overview

The ATtiny3224-XU is an 8-bit microcontroller from the tinyAVR® 2 family, featuring a high-performance AVR CPU with hardware multiplier running at up to 20 MHz. It includes 32 KB of in-system self-programmable Flash memory, 3 KB of SRAM, and 256B of EEPROM. The device offers up to 12 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, and an Event System for inter-peripheral signaling.

Feature Summary

• Features a flexible low-power architecture with an Event System for predictable inter-peripheral signaling without CPU intervention.
• Includes advanced analog capabilities such as a 12-bit differential ADC with Programmable Gain Amplifier (PGA) and multiple internal voltage references.
• Supports vertical migration within the tinyAVR® 2 family with full pin and feature compatibility across variants.

Applications

• Sensor nodes requiring reliable operation in harsh environments
• Applications needing automated cyclic redundancy check (CRC) flash memory scanning
• Systems utilizing configurable custom logic (CCL) for hardware-based logic functions

Procurement Notes

Verify the specific package type associated with the XU suffix corresponds to TSSOP or SSOP formats as defined in the datasheet. Confirm that the operating temperature range matches the industrial specification (-40°C to +85°C). Ensure design requirements align with the 1.8V to 5.5V supply voltage limits and 20 MHz maximum frequency constraints.

Selection Notes

Select this component when 32 KB of Flash memory and 3 KB of SRAM are required within a compact 14-pin footprint. It is suitable for designs needing a 12-bit differential ADC with PGA and multiple communication interfaces like USART and TWI. Consider this part for applications benefiting from the single-pin UPDI programming interface and low-power sleep modes.

Part Context

This device belongs to the tinyAVR® 2 family, which provides horizontal and vertical migration paths. The ATtiny3224 variant specifically offers 14 pins, distinguishing it from the 20-pin ATtiny3226 and 24-pin ATtiny3227 models while maintaining identical core features and memory sizes.

Replacement Considerations

ATtiny3226-XU

FAQ

What is the function of the User Row in nonvolatile memory?

The 32B User Row can retain data during chip-erase operations and can be programmed while the device is locked.

How does the Event System benefit peripheral interaction?

It allows for CPU-independent and predictable inter-peripheral signaling, reducing processor load and improving response times.