ATTINY261A-MUR

Overview

The ATTINY261A-MUR is an 8-bit AVR microcontroller featuring 2K bytes of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates at a maximum frequency of 20 MHz with a supply voltage range of 1.8V to 5.5V. The device includes an 11-channel 10-bit ADC, two timers/counters, three PWM outputs, and a Universal Serial Interface (USI). It is housed in a 32-pad Micro Lead Frame Package (MLF) with tape and reel packaging.

Feature Summary

• Advanced RISC architecture delivering up to 20 MIPS throughput at 20 MHz
• High endurance non-volatile memory segments with 10,000 write/erase cycles for Flash and EEPROM
• Integrated analog peripherals including an 11-channel 10-bit ADC and programmable analog comparator
• Comprehensive power management with four software-selectable sleep modes

Applications

• Battery-powered embedded systems requiring low power consumption
• Industrial control applications utilizing the Universal Serial Interface
• Sensor interfaces leveraging the high-resolution ADC channels
• Motor control implementations using hardware PWM and dead time generation

Procurement Notes

Verify the specific speed grade and package variant against project requirements. Confirm that the MLF package soldering guidelines are followed during assembly. Ensure the ordering code matches the desired temperature range and packaging format. Cross-reference the datasheet revision history for any updates to electrical characteristics or errata before finalizing procurement.

Selection Notes

Select this component when a balance of processing speed and peripheral richness is required within a compact footprint. The 2KB Flash capacity suits moderate firmware complexity. Consider the extended industrial temperature range if operating conditions exceed standard commercial limits. Evaluate the available I/O lines and ADC channels against system interface needs.

Part Context

This part belongs to the ATtiny261A/461A/861A family of 8-bit AVR microcontrollers. These devices share a common core architecture and peripheral set, differing primarily in memory sizes. The ATTINY261A represents the entry-level configuration within this series, offering 2KB of program memory while maintaining full feature parity with higher-capacity variants.

Replacement Considerations

Compatible substitutes include ATTINY461A-MUR and ATTINY861A-MUR, which offer increased memory but maintain pin compatibility. Verify that the replacement part number corresponds to the same package type and speed grade to ensure mechanical and electrical interchangeability.