ATTINY3224-SSUR

Overview

The ATtiny3224-SSUR is an 8-bit microcontroller from the tinyAVR® 2 family, featuring a 14-pin SOIC package. It includes 32 KB of Flash memory, 3 KB of SRAM, and 256 B of EEPROM. The device operates at frequencies up to 20 MHz with a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, four CCL LUTs, one TCA, two TCBs, and an RTC.

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.
• Provides flexible inter-peripheral communication via an Event System and Configurable Custom Logic (CCL).
• Supports low-power operation through multiple sleep modes and dedicated ultra-low power oscillators.

Applications

• Industrial control systems requiring robust peripheral interfaces and event-driven logic.
• Battery-powered devices utilizing low-power architectures and extended data retention.
• Sensor interface applications leveraging the high-resolution differential ADC and programmable gain.
• Communication nodes using dual USARTs and standard serial protocols like SPI and TWI.

Procurement Notes

Verify the specific ordering suffix 'SS' corresponds to the 14-pin SOIC package with 150 mil width as defined in the datasheet naming convention. Confirm that the 'U' suffix indicates the industrial temperature range of -40°C to +85°C. Ensure compatibility with the UPDI programming interface requirements before integration.

Selection Notes

Select this component when 32 KB of program memory and 3 KB of RAM are required within a compact 14-pin footprint. It is suitable for designs needing a 12-bit ADC with PGA for precision measurements. Consider this part for applications benefiting from the tinyAVR 2 family's vertical migration path to higher pin-count variants without code modification.

Part Context

This device belongs to the tinyAVR® 2 family, which offers vertical migration compatibility across 14, 20, and 24-pin packages. The ATtiny3224 represents the 14-pin variant with 32 KB Flash, sharing architectural features with the ATtiny3226 and ATtiny3227 while providing fewer general-purpose I/O pins.

Replacement Considerations

Direct pin-compatible replacements within the same family include other members of the tinyAVR 2 series such as the ATtiny3226 or ATtiny3227, provided the additional pins and peripherals are acceptable. Legacy upgrades from the tinyAVR 1 series may require schematic and firmware adjustments due to architectural differences.

FAQ

What is the maximum operating frequency for the ATtiny3224?

The ATtiny3224 can operate at frequencies up to 20 MHz, depending on the supply voltage and temperature grade.

Does the ATtiny3224 support differential ADC inputs?

Yes, it features a 12-bit differential Analog-to-Digital Converter (ADC) with a Programmable Gain Amplifier (PGA) and up to 9 input channels.

How many Timer/Counter units are included in the ATtiny3224?

The device includes one 16-bit Timer/Counter Type A (TCA) and two 16-bit Timer/Counters Type B (TCB).