ATTINY85-20MUR

Overview

The ATTINY85-20MUR is an 8-bit AVR microcontroller featuring 8 KB of in-system programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz with a supply voltage range of 2.7 V to 5.5 V. The device utilizes a 20-pad QFN/MLF package (20M1) and supports industrial temperature ranges.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle
• Non-volatile memory with high endurance for program and data storage
• Integrated Universal Serial Interface and 10-bit ADC with differential channels
• Multiple power-saving modes including Idle, ADC Noise Reduction, and Power-down

Applications

• In-system programming via SPI port
• On-chip debug system support
• Industrial temperature range applications

Procurement Notes

Verify the ordering code suffix 'R' indicates tape and reel packaging. Confirm the speed grade '20' corresponds to the 2.7 V to 5.5 V operating voltage range. Ensure the package type matches the 20-pad QFN/MLF specification for the specific application requirements.

Selection Notes

Select this variant for applications requiring surface mount assembly with a compact footprint. The 20-pin MLF package provides additional unused pads compared to 8-pin options. Verify that the 20 MHz speed grade aligns with the required operating voltage and thermal conditions.

Part Context

This component belongs to the ATtiny25/45/85 family of low-power CMOS 8-bit microcontrollers. It shares the same core architecture and peripheral set as other members of the series, differing primarily in memory size and package configuration. The MLF package offers a small form factor suitable for space-constrained designs.

Replacement Considerations

ATtiny85-20MU serves as a direct pin-compatible alternative within the same package type.