ATTINY261A-MF

Overview

The ATTINY261A-MF is an 8-bit microcontroller based on the AVR enhanced RISC architecture, manufactured by Microchip Technology. It features 2 Kbytes of In-System Programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. The device operates with a maximum clock frequency of 20 MHz and supports an operating voltage range of 1.8 V to 5.5 V. It includes 16 programmable I/O lines, an 11-channel 10-bit ADC, and various peripheral features such as timers, counters, and a Universal Serial Interface.

Feature Summary

• High-performance 8-bit AVR core executing most instructions in a single clock cycle for up to 20 MIPS throughput at 20 MHz.
• Non-volatile memory segments including 2 KB Flash with 10,000 write/erase cycles, 128 B EEPROM with 100,000 write/erase cycles, and 128 B SRAM.
• Integrated analog peripherals featuring an 11-channel 10-bit ADC with differential inputs and programmable gain, plus an on-chip analog comparator.
• Comprehensive timer and counter subsystems including an 8/16-bit Timer/Counter, an 8/10-bit high-speed Timer/Counter, and three PWM outputs.

Applications

• Battery-powered embedded systems requiring low power consumption and extended data retention.
• Industrial control applications utilizing the robust non-volatile memory endurance and wide operating temperature range.
• Sensor interface designs leveraging the high-resolution ADC and analog comparator capabilities.
• Communication nodes employing the Universal Serial Interface (USI) for SPI or I2C protocols.

Procurement Notes

Verify the specific suffix 'MF' against official Microchip documentation to confirm package type and temperature grade, as ordering suffixes define physical attributes. Ensure compatibility with existing PCB footprints for the designated package variant. Cross-reference the manufacturer part number with current datasheets to validate pinout configurations and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component when a balance of processing speed and power efficiency is required for resource-constrained applications. The 2 KB Flash capacity suits moderate firmware complexity, while the extensive I/O and ADC channels support diverse sensor integration. Consider the available sleep modes for optimizing energy usage in portable devices. Evaluate the need for in-system programming capabilities via SPI for manufacturing flexibility.

Part Context

The ATTINY261A belongs to the ATtinyx61A family of 8-bit microcontrollers, which share a common architectural foundation but differ in memory sizes. This family utilizes the AVR enhanced RISC core and offers similar peripheral sets across variants like the ATtiny461A and ATtiny861A. The 'A' designation typically indicates updated versions with improved features or reliability characteristics compared to earlier iterations.

Replacement Considerations

Direct replacements within the same family include the ATtiny461A and ATtiny861A, which offer increased Flash and SRAM capacities while maintaining pin compatibility. Verify that the substitute part's memory size meets application requirements and that the package type matches the existing design constraints.