ATTINY461A-MUR

Overview

The ATtiny461A-MUR is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture, manufactured by Microchip Technology. It features 4K bytes of In-System Programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. The device operates at speeds up to 20 MHz with a supply voltage range of 1.8V to 5.5V. Key peripherals include an 11-channel 10-bit ADC, two timer/counters, a Universal Serial Interface, and an analog comparator. It supports debugWIRE on-chip debugging and offers four software-selectable power-saving modes.

Feature Summary

• Advanced RISC architecture achieving up to 20 MIPS throughput at 20 MHz with single-clock-cycle execution for most instructions.
• High endurance non-volatile memory segments including self-programmable Flash and EEPROM with significant write/erase cycle ratings.
• Integrated peripheral suite featuring a 10-bit ADC with differential channels, programmable watchdog timer, and universal serial interface.
• Comprehensive power management with multiple sleep modes and low active current consumption optimized for battery-operated applications.

Applications

• Battery-powered consumer electronics requiring low power consumption
• Industrial control systems utilizing in-system programming capabilities
• Sensor interfaces leveraging the high-resolution analog-to-digital converter
• Embedded systems requiring on-chip debugging via debugWIRE

Procurement Notes

Verify the specific ordering code ATtiny461A-MUR against the manufacturer's current datasheet to confirm package type and temperature range. Ensure compatibility with existing design constraints regarding the MLF package soldering requirements. Confirm that the tape and reel configuration matches assembly line specifications. Cross-reference electrical characteristics with the intended operating environment conditions.

Selection Notes

Select this component when 4K bytes of program memory and 256 bytes each of data storage are sufficient for the application logic. Consider the 20-pin MLF package for space-constrained designs requiring a compact footprint. Evaluate the need for the specific speed grade and voltage range relative to system power budgets. Verify peripheral requirements such as ADC channel count and timer configurations against available hardware resources.

Part Context

This device belongs to the ATtiny261A/461A/861A family of 8-bit microcontrollers. It shares the same core architecture and peripheral set as its siblings, differing primarily in the size of the non-volatile memory segments. The family utilizes Atmel’s high-density non-volatile memory technology and supports standard AVR development tools. The -MUR suffix indicates a specific packaging and taping configuration for automated assembly.

Replacement Considerations

Direct substitutes within the same family include ATtiny261A-MUR and ATtiny861A-MUR, which share identical pinouts and core functionality but offer different memory capacities. Verify that the alternative part number meets the specific memory requirements of the design before substitution.