ATTINY441-MU

Overview

The ATTINY441-MU is an 8-bit AVR microcontroller featuring a 16 MHz speed grade and industrial temperature range (-40°C to +85°C). It utilizes a 20-pad MLF/QFN package (20M1) with dimensions of 4 x 4 x 0.8 mm. The device includes 4K bytes of in-system programmable Flash, 256 bytes of EEPROM, and 256 bytes of internal SRAM. Operating voltage ranges from 1.7V to 5.5V, supporting up to 16 MIPS throughput at 16 MHz.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high efficiency
• Integrated ultra-low power watchdog timer and calibrated oscillators for precise timing control
• Dual full-duplex USARTs with start frame detection and master/slave SPI interface
• High-current drive capability on specific I/O pins for direct peripheral interfacing

Applications

• Low-power embedded sensor nodes requiring minimal active current consumption
• Industrial control systems operating within the specified industrial temperature range
• Battery-powered devices utilizing multiple software-selectable power-saving modes
• Applications requiring dual serial communication interfaces for data acquisition

Procurement Notes

Verify the ordering code matches the required speed grade and package type. Confirm that the MLF/QFN variant corresponds to the 20-pad configuration. Ensure the component meets RoHS compliance standards if required by your manufacturing process. Cross-reference the datasheet revision to confirm feature availability.

Selection Notes

Select this model when 4K bytes of program memory and 256 bytes of RAM are sufficient for the application logic. The MLF/QFN package is suitable for space-constrained designs requiring surface-mount assembly. Consider the 16 MHz performance limit against the system's processing requirements and available supply voltage constraints.

Part Context

This component belongs to the ATtiny441/ATtiny841 family of 8-bit AVR microcontrollers manufactured by Microchip Technology. It shares architectural similarities with other tinyAVR devices but offers specific memory configurations and pin counts tailored for compact applications.

Replacement Considerations

The ATtiny841-MU serves as a functional substitute with identical pinout and features, offering increased memory capacity.