ATTINY44A-SSFR

Overview

The ATTINY44A-SSFR is an 8-bit AVR microcontroller featuring 4K bytes of In-System Programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. It operates on a supply voltage range of 1.8V to 5.5V with maximum clock frequencies up to 20 MHz at 4.5V–5.5V. The device includes a 10-bit ADC with 8 single-ended channels and 12 differential pairs, two timer/counters with PWM capabilities, and a Universal Serial Interface. It utilizes a 14-pin SOIC package and supports industrial temperature ranges.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput efficiency.
• Integrated non-volatile memory segments with high endurance ratings for Flash and EEPROM data retention.
• Comprehensive peripheral set including a 10-bit ADC with programmable gain, analog comparator, and debugWIRE system.

Applications

• Low-power embedded control systems requiring efficient processing at minimal voltages.
• Sensor interface applications utilizing the multi-channel 10-bit ADC and analog comparator.
• Industrial environments necessitating operation across extended temperature ranges.

Procurement Notes

Verify the specific suffix SSFR corresponds to the 14-SOIC surface-mount package configuration. Confirm that the procurement order matches the industrial temperature grade specifications required for the intended operational environment. Ensure compatibility with existing SPI programming interfaces for in-system programming requirements.

Selection Notes

Select this component when 4K bytes of program memory and 256 bytes of data storage are sufficient for the application logic. Consider the 14-pin form factor for space-constrained designs requiring multiple I/O lines. Evaluate the power consumption profiles across different sleep modes if battery operation is a primary design constraint.

Part Context

This device belongs to the ATtiny24A/44A/84A family of low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. The family shares common core features while varying in memory capacities and pin counts to suit diverse application needs within the same ecosystem.

Replacement Considerations

ATtiny44A-PU

FAQ

What is the function of the PB3 pin?

PB3 serves as the RESET input but can be configured as a general-purpose I/O pin by programming the RSTDISBL fuse bit.

How does the ADC Noise Reduction mode operate?

This mode minimizes switching noise during conversions by stopping the CPU and all I/O modules except the ADC.