ATTINY461A-XUR

Overview

The ATTINY461A-XUR is an 8-bit microcontroller from the ATtinyx61A series, featuring a 20-pin MLF package. It utilizes the AVR enhanced RISC architecture with up to 20 MIPS throughput at 20 MHz. The device includes 4 kB of In-System Programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. Operating voltage ranges from 1.8 V to 5.5 V. Peripherals include an 11-channel 10-bit ADC, two timers/counters, a Universal Serial Interface, and an on-chip analog comparator.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high efficiency.
• High endurance non-volatile memory segments with significant write/erase cycle ratings.
• Integrated 10-bit ADC supporting multiple differential channel pairs with programmable gain.
• Supports four software-selectable power-saving modes including Power-Down and Idle.

Applications

• Battery-powered embedded systems requiring low active and standby current consumption.
• Applications utilizing capacitive touch sensing interfaces via QTouch Library integration.
• Systems requiring precise analog signal acquisition through the multi-channel ADC.
• Industrial control environments needing robust non-volatile data retention.

Procurement Notes

Verify the specific suffix 'XUR' corresponds to the 32-pad MLF package variant when sourcing. Confirm that the ordered component matches the ATtiny461A memory configuration rather than other series members like ATtiny261A or ATtiny861A. Ensure compatibility with standard SPI programming interfaces for in-system flashing.

Selection Notes

Select this model for designs prioritizing small form factor due to the MLF package. Consider the 1.8 V minimum operating voltage for low-power battery applications. Evaluate the 10-bit ADC resolution against sensor requirements. Verify that the 16 general-purpose I/O lines meet the interface count needs.

Part Context

This component belongs to the ATtinyx61A family, which expands upon the classic ATtiny architecture with enhanced peripheral sets. The series maintains the low-power CMOS technology while adding features like programmable gain amplifiers for the ADC. It represents a mid-range option within the AVR portfolio for cost-sensitive 8-bit applications.

Replacement Considerations

ATtiny461A-SU

FAQ

What is the maximum operating frequency for the ATTINY461A-XUR?

The device supports a maximum throughput of 20 MIPS, achieved at a clock frequency of 20 MHz under appropriate voltage conditions.

Does the ATTINY461A-XUR support in-system programming?

Yes, the Flash program memory can be reprogrammed in-system via the SPI serial interface.