ATTINY861-20PU

Overview

The ATTINY861-20PU is an 8-bit AVR microcontroller featuring 8K bytes of In-System Programmable Flash, 512 bytes of EEPROM, and 512 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, a Universal Serial Interface, and three high-frequency PWM outputs.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput.
• Non-volatile memory with high endurance for Flash and EEPROM data retention.
• Integrated analog peripherals including a 10-bit ADC and on-chip analog comparator.
• Supports low-power operation through multiple software-selectable 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 capabilities

Procurement Notes

Verify the specific speed grade suffix matches the required operating frequency. Confirm package type corresponds to the intended PCB layout. Check current availability status as this component may be subject to lifecycle changes. Ensure programming tools support the SPI interface for in-system programming.

Selection Notes

Select this model when 8K Flash and 16 I/O pins are required. Choose the V variant if operation below 2.7V is necessary. Consider the 20MHz speed grade for higher processing requirements within the standard voltage range. Verify thermal management needs for the PDIP package.

Part Context

This part belongs to the ATtiny261/461/861 family of 8-bit AVR microcontrollers. It shares architectural similarities with the ATtiny461 and ATtiny261 but offers larger memory capacities. The family is designed for cost-sensitive applications needing efficient code execution and peripheral integration.

Replacement Considerations

ATtiny861V-20PU

FAQ

What is the difference between the ATTINY861 and ATTINY861V?

The ATTINY861V supports a lower operating voltage range of 1.8V to 5.5V, whereas the ATTINY861 requires a minimum of 2.7V.

How many channels does the ADC have?

The device features an 11-channel 10-bit Analog-to-Digital Converter.

Is the Flash memory reprogrammable?

Yes, the Flash memory is In-System Programmable via the SPI serial interface.