ATTINY44-20MU

Overview

The ATTINY44-20MU is an 8-bit AVR microcontroller featuring a 20 MHz maximum clock frequency and 4 KB of in-system programmable Flash memory. It operates within a voltage range of 2.7V to 5.5V and includes 256 bytes of EEPROM and 256 bytes of SRAM. The device utilizes a 14-pin MLF package and supports industrial temperature ranges.

Feature Summary

• Advanced RISC architecture with 120 instructions, most executing in a single clock cycle
• Non-volatile memory with high endurance for Flash and EEPROM
• Integrated analog-to-digital converter with multiple input channels
• Low power consumption with multiple sleep modes

Applications

• Battery-powered embedded systems requiring low power operation
• Industrial control applications within specified temperature ranges
• Sensor interface circuits utilizing the internal ADC
• General-purpose I/O expansion using available interrupt pins

Procurement Notes

Verify the specific suffix 'MU' corresponds to the MLF package variant when sourcing. Confirm that the manufacturer documentation explicitly lists this part number, as datasheets often group variants under the base model ATTINY44. Ensure compatibility with development tools supporting the AVR architecture.

Selection Notes

Select this component for designs requiring a balance of processing speed and power efficiency in a compact surface-mount package. Consider the 20 MHz performance limit relative to the supply voltage. Evaluate the 14-pin pinout against available PCB space and I/O requirements before finalizing the design.

Part Context

This microcontroller belongs to the Atmel ATtiny family, known for code efficiency and low power consumption. It shares architectural similarities with other AVR devices but offers a specific combination of memory size and peripheral features suitable for cost-sensitive applications. The MLF package provides a small footprint for dense board layouts.

Replacement Considerations

Check for ATTINY44-20PU or ATTINY44-10SSU equivalents if package or speed variations are acceptable. Verify pin compatibility and software register mappings before substituting with other ATtiny series members.