ATTINY461A-SU

Overview

The ATTINY461A-SU is an 8-bit AVR microcontroller featuring a 20-pin SOIC package. It includes 4K bytes of In-System Programmable Flash, 256 bytes of EEPROM, and 256 bytes of SRAM. The device supports a maximum clock frequency of 20 MHz with throughput up to 20 MIPS. Operating voltage ranges from 1.8V to 5.5V. It provides 16 programmable I/O lines, an 11-channel 10-bit ADC, one 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 including self-programmable flash and EEPROM
• Integrated peripheral features such as a 10-bit ADC, analog comparator, and PWM outputs
• Supports multiple power-saving sleep modes including Idle, Standby, and Power-Down

Applications

• In-system programming via SPI port
• Touch sensing interfaces using QTouch Library
• Applications requiring low power consumption and high processing speed optimization

Procurement Notes

Verify the specific suffix 'SU' corresponds to the 20-pin SOIC package variant when ordering. Confirm that the 4K Flash memory configuration matches the ATtiny461A designation within the family. Ensure compatibility with the required operating voltage range of 1.8V to 5.5V for your target application environment.

Selection Notes

Select this component for designs requiring a balance of processing performance and low power consumption. The 20MHz speed grade is suitable for applications needing up to 20 MIPS throughput. Consider the available 16 I/O lines and 11-channel ADC for sensor interfacing needs. Verify package availability if surface mount assembly is required.

Part Context

This part belongs to the ATtiny261A/461A/861A series of 8-bit AVR microcontrollers. The '461A' designation specifically indicates the 4K Flash memory capacity variant. The 'SU' suffix denotes the 20-pin Small Outline Integrated Circuit (SOIC) package type, distinguishing it from PDIP or TSSOP options.

Replacement Considerations

Check for ATTINY461A-SUR which shares similar specifications but may differ in tape and reel packaging. Other family members like ATTINY261A or ATTINY861A offer different memory sizes but share the same core architecture and pinout.