ATTINY261A-SUR

Overview

The ATTINY261A-SUR is an 8-bit AVR microcontroller featuring 2K bytes of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz with a supply voltage range of 1.8V to 5.5V. The device includes 16 programmable I/O lines, an 11-channel 10-bit ADC, two timers/counters, and a Universal Serial Interface (USI). It is housed in a 20-lead SOIC package.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput.
• Non-volatile memory segments including self-programmable Flash, EEPROM, and internal SRAM.
• Peripheral features include multiple timer/counters, PWM outputs, and an analog-to-digital converter.
• Supports debugWIRE on-chip debugging and multiple software-selectable power-saving sleep modes.

Applications

• Battery-powered embedded systems requiring low power consumption
• Industrial control applications utilizing the industrial temperature range
• Sensor interfaces leveraging the multi-channel ADC and analog comparator

Procurement Notes

Verify the specific speed grade and package variant against project requirements. Confirm that the ordering suffix corresponds to the tape and reel packaging format intended for automated assembly processes. Ensure compatibility with existing design tools and development environments.

Selection Notes

Select this component when a balance of processing speed and peripheral richness is required within a compact form factor. Consider the 20 MHz performance limit and the 1.8V to 5.5V operating voltage range. Evaluate the need for the specific 20-lead SOIC footprint and industrial temperature rating during the hardware design phase.

Part Context

This part belongs to the ATtiny261A/461A/861A family of 8-bit microcontrollers based on the AVR enhanced RISC architecture. These devices are designed for applications demanding high code efficiency and low power consumption. The family shares common core features but varies in memory sizes and specific peripheral configurations.

Replacement Considerations

Compatible substitutes within the same series include ATTINY261A-MU, ATTINY261A-PU, and ATTINY261A-XU. Verify pinout compatibility and package dimensions before substitution to ensure mechanical fit and electrical connectivity remain unchanged.