ATTINY44A-SSU: A Comprehensive Guide to Microchip's High-Performance 8-Bit Microcontroller

The ATTINY44A-SSU from Microchip Technology represents the pinnacle of compact, efficient 8-bit microcontroller design. As part of Microchip's renowned AVR family, this IC delivers exceptional performance in a tiny package, making it perfect for space-constrained embedded applications across industries.

In-Depth Technical Specifications

Processing Power and Architecture

At its core, the ATTINY44A-SSU features an advanced 8-bit AVR RISC architecture capable of executing most instructions in a single clock cycle. With a maximum clock speed of 20MHz, it achieves up to 20 MIPS throughput, providing ample processing power for real-time control applications.

Advanced Memory Configuration

The microcontroller boasts an optimized memory hierarchy:

• 4KB (2K x 16) In-System Programmable Flash with 10,000 write/erase cycles endurance
• 256B EEPROM with 100,000 write/erase cycles for critical data storage
• 256B SRAM for efficient data manipulation during operation

This balanced memory architecture supports complex program execution while maintaining power efficiency.

Enhanced Peripheral Integration

Communication Interfaces

The Universal Serial Interface (USI) provides flexible communication options:

• SPI (Serial Peripheral Interface) for high-speed peripheral communication
• TWI (Two-Wire Interface) compatible with I C
• Half-duplex UART functionality

This versatility enables seamless integration with sensors, displays, and other system components.

Analog Capabilities

The integrated 10-bit ADC with 8 channels offers:

• 2 LSB absolute accuracy
• 15kSPS conversion rate
• Programmable gain amplifier interface

These features make it ideal for precision measurement applications.

Power Management Features

Voltage Flexibility

Operating from 1.8V to 5.5V, the ATTINY44A-SSU supports:

• Battery-powered applications down to 1.8V
• Standard 3.3V and 5V system integration
• Six selectable power-saving sleep modes

Current consumption is just 300 A at 1MHz, 1.8V in active mode.

Robust Power Protection

Built-in safety features include:

• Programmable Brown-out Detection
• Power-on Reset
• Watchdog Timer with separate oscillator

These ensure reliable operation in fluctuating power conditions.

Development Ecosystem

Software Support

Microchip provides comprehensive development tools:

• Atmel Studio IDE with advanced debugging
• AVR-GCC compiler toolchain
• Programmer/debugger hardware support

Numerous third-party tools and libraries are also available.

Hardware Considerations

The 14-pin SOIC package (3.9mm width) enables:

• High-density PCB layouts
• Automated assembly processes
• Easy prototyping

All pins feature 20mA drive capability for direct peripheral interfacing.

Application Scenarios

Industrial Applications

Ideal for:

• Sensor interfaces
• Motor control
• Human-machine interfaces

Industrial temperature range (-40 C to 85 C) ensures reliability.

Consumer Electronics

Perfect for:

• Smart home devices
• Wearable technology
• Remote controls

Low power consumption extends battery life.

Conclusion

The ATTINY44A-SSU combines Microchip's proven AVR technology with modern features in an accessible package. Its balanced performance, rich peripheral set, and power efficiency make it an excellent choice for both simple control tasks and complex embedded systems. Whether you're developing IoT devices, industrial controls, or consumer products, this microcontroller delivers the perfect combination of capability and value.

For designers seeking a reliable, feature-packed 8-bit solution, the ATTINY44A-SSU represents one of the most versatile options in its class. Visit our product page today to explore development kits, documentation, and purchasing options for your next project.