ATTINY461-20SU

Overview

The ATTINY461-20SU 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 operates at a maximum frequency of 20 MHz with a supply voltage range of 2.7V to 5.5V. Key peripherals include an 11-channel 10-bit ADC, an analog comparator, two timers/counters, and a Universal Serial Interface (USI).

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle.
• In-system programmable non-volatile memory for program and data storage.
• Integrated 10-bit analog-to-digital converter with multiple channel options.
• Supports low-power operation through selectable sleep modes.

Applications

• Embedded control systems requiring compact form factors.
• Battery-powered devices utilizing low power consumption modes.
• Sensor interface applications leveraging the integrated ADC.
• Industrial monitoring within specified temperature ranges.

Procurement Notes

Verify the specific suffix 'SU' corresponds to the 20-pin SOIC package variant. Confirm the operating voltage range matches the standard ATtiny461 specification (2.7V–5.5V) rather than the V-series (1.8V–5.5V). Ensure the industrial temperature rating aligns with system requirements before integration.

Selection Notes

Select this component when 4KB of flash memory and 16 general-purpose I/O lines are required in a surface-mount package. Consider the 20MHz speed grade if higher processing throughput is needed compared to lower-speed variants. Verify that the USI interface meets communication needs instead of dedicated SPI or UART modules.

Part Context

This part belongs to the ATtiny461 family within Microchip's AVR portfolio. It shares architectural similarities with the ATtiny261 and ATtiny861, differing primarily in memory capacities. The device utilizes the enhanced AVR RISC core optimized for code efficiency and power management.

Replacement Considerations

ATtiny461A-SU