ATTINY261-20SU

Overview

The ATTINY261-20SU is an 8-bit AVR microcontroller featuring 2KB of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates at a maximum frequency of 20 MHz with a supply voltage range of 2.7V to 5.5V. The device includes 16 programmable I/O lines, an 11-channel 10-bit ADC, 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 analog-to-digital converter with multiple channel options.
• Supports low-power operation modes including Idle and Power-Down.

Applications

• Battery-powered embedded systems requiring low power consumption.
• Industrial control applications utilizing the industrial temperature range.
• Sensor interface circuits leveraging the on-chip ADC and analog comparator.

Procurement Notes

Verify the specific speed grade suffix matches the required operating frequency. Confirm the package type corresponds to the 20-pin SOIC variant. Ensure the component meets the necessary environmental standards for the intended deployment environment.

Selection Notes

Select this model when 2KB of Flash memory is sufficient for the application logic. Choose this part over higher-density variants if cost or pin count optimization is prioritized. Verify that the 20MHz performance meets the system timing requirements.

Part Context

This component belongs to the ATtiny261/461/861 family of 8-bit AVR microcontrollers. It shares architectural similarities with the ATtiny461 and ATtiny861, differing primarily in memory capacity. The series is designed for high-performance, low-power applications using CMOS technology.

Replacement Considerations

ATtiny461-20SU offers increased memory capacity within the same package. ATtiny861-20SU provides further memory expansion while maintaining identical pinouts and peripheral sets.