ATTINY461A-XU

Overview

The ATTINY461A-XU is an 8-bit AVR microcontroller featuring 4K bytes of In-System Programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. It operates on a fully static architecture with up to 20 MIPS throughput at 20 MHz. The device supports an operating voltage range of 1.8V to 5.5V across multiple speed grades. Key peripherals include an 11-channel 10-bit ADC, an analog comparator, two timers/counters, and a Universal Serial Interface.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high efficiency
• High endurance non-volatile memory segments with software security lock options
• Integrated 10-bit ADC with differential channel pairs and programmable gain capabilities
• On-chip debug system supporting in-system programming via SPI interface

Applications

• Battery-powered embedded systems requiring low power consumption
• Industrial control applications utilizing analog signal processing
• Consumer electronics interfaces with touch sensing requirements
• Smart energy metering devices with precise measurement needs

Procurement Notes

Verify the specific suffix XU corresponds to the required package type and temperature grade against official Microchip documentation. Confirm that the ordering code matches the exact memory configuration and speed grade intended for the design. Ensure compliance with RoHS standards and check for any specific handling precautions during assembly.

Selection Notes

Select this component when a balance of moderate program memory and rich analog peripherals is required. The 20-pin form factor suits compact designs needing multiple I/O lines and ADC channels. Consider the available sleep modes for power optimization and verify that the 1.8V minimum supply meets the target application's voltage constraints.

Part Context

This part belongs to the ATtinyx61A series, which shares architectural similarities with the ATtiny261A and ATtiny861A. The series utilizes the same AVR core and peripheral set, differing primarily in memory sizes and package options. The XU suffix typically denotes a specific surface-mount package variant within the broader ATtiny family lineup.

Replacement Considerations

Direct substitutes include ATTINY461A-SU and ATTINY461A-MU, which share identical electrical specifications but differ in package style. Verify pin compatibility and thermal characteristics when transitioning between SOIC, TSSOP, or MLF packages.