ATTINY44A-SSNR

Overview

The ATTINY44A-SSNR is an 8-bit AVR RISC microcontroller featuring 4KB of In-System Programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz with a supply voltage range of 1.8V to 5.5V. The device includes one 8-bit and one 16-bit Timer/Counter with two PWM channels each, a 10-bit ADC with 8 single-ended and 12 differential channel pairs, and a Universal Serial Interface (USI). It utilizes a 14-pin SOIC Wide package.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput efficiency.
• Non-volatile memory segments offering high endurance for Flash and EEPROM data retention.
• Integrated analog peripherals including a 10-bit ADC with programmable gain and an on-chip analog comparator.
• Comprehensive power management with multiple software-selectable sleep modes to minimize consumption.

Applications

• Battery-powered embedded systems requiring low active current consumption
• Industrial control interfaces utilizing the Universal Serial Interface
• Sensor monitoring applications leveraging the 10-bit ADC and temperature sensor

Procurement Notes

Verify the specific suffix 'SSNR' corresponds to the 14-pin SOIC Wide tape-and-reel packaging configuration. Confirm that the operating voltage and speed grade requirements align with the datasheet specifications for the 20 MHz variant. Ensure environmental compliance standards match project requirements.

Selection Notes

Select this component when 4KB program memory and 256 bytes of RAM are sufficient for the application logic. Consider the 14-pin SOIC package for surface-mount assembly constraints. Evaluate the 20 MHz performance capability against the required processing speed and power budget.

Part Context

This part belongs to the ATtiny44A series within the Microchip AVR family. It shares architectural similarities with the ATtiny24A and ATtiny84A, differing primarily in memory capacities. The device is designed for cost-sensitive, low-power applications requiring robust 8-bit processing capabilities.

Replacement Considerations

ATtiny44A-SSU

FAQ

What is the function of the USI interface?

The Universal Serial Interface (USI) supports standard SPI and I2C communication protocols, allowing flexible connectivity with peripheral devices.

How does the device handle low power operation?

It offers four selectable sleep modes: Idle, ADC Noise Reduction, Power-save, and Power-down, allowing optimization of power consumption versus processing speed.