ATTINY261-20MUR

Overview

The ATTINY261-20MUR is an 8-bit AVR microcontroller featuring a 2 KB Flash program memory, 128 bytes EEPROM, and 128 bytes SRAM. It operates at speeds up to 20 MHz when powered between 4.5 V and 5.5 V, or up to 10 MHz across the 2.7 V to 5.5 V range. The device includes 16 programmable I/O lines, an 11-channel 10-bit ADC, and two timers. It utilizes a 32-pad MLF package and supports industrial temperature ranges.

Feature Summary

• Executes instructions in a single clock cycle using an advanced RISC architecture with 32 general-purpose working registers.
• Features non-volatile memories including In-System Programmable Flash, EEPROM, and internal SRAM with high endurance ratings.
• Integrates peripheral modules such as an 11-channel 10-bit ADC, Universal Serial Interface (USI), and multiple timer/counters.

Applications

• Industrial control systems requiring robust processing within compact footprints
• Battery-powered devices utilizing low-power consumption modes
• Sensor interfaces leveraging the integrated analog-to-digital converter

Procurement Notes

Verify that the specific suffix corresponds to the required speed grade and voltage operating range for your application. Confirm the MLF package type matches your PCB layout requirements. Ensure compliance with RoHS directives if applicable to your manufacturing standards. Cross-reference the datasheet revision to confirm feature availability.

Selection Notes

Select this component for applications needing high performance per milliwatt due to its single-cycle execution capability. Consider the 20 MHz speed grade only if operating voltages remain above 4.5 V. Evaluate the 16 I/O lines against interface requirements. Check if the 2 KB Flash capacity suffices for the intended firmware size.

Part Context

This part belongs to the ATtiny261/461/861 family of 8-bit AVR microcontrollers. These devices share a common core architecture but differ in memory sizes and package options. The ATTINY261 variant specifically provides 2 KB of Flash memory, distinguishing it from higher-capacity siblings in the series.

Replacement Considerations

Compatible substitutes include ATTINY261V-20MU and ATTINY261-20SU. Verify package compatibility and speed grades when substituting. Ensure the replacement part meets the same voltage and temperature specifications.