ATTINY861A-PU

Overview

The ATTINY861A-PU 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 speeds up to 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 supports debugWIRE on-chip debugging and offers four software-selectable power-saving modes.

Feature Summary

• Advanced RISC architecture achieving up to 20 MIPS throughput at 20 MHz
• High endurance non-volatile memory segments with 10,000 Flash write/erase cycles
• Integrated analog features including a 10-bit ADC and programmable analog comparator
• Comprehensive peripheral set including timers, PWM outputs, and USI

Applications

• Stand-alone photovoltaic lighting systems with MPPT battery charging
• Configurable three-phase BLDC fan applications using sensorless control
• Low-power embedded control requiring in-system programming

Procurement Notes

Verify the specific speed grade suffix matches the required operating frequency for the target voltage range. Confirm the package type corresponds to the intended PCB layout. Check current production status as availability may vary by region. Ensure compliance with RoHS directives if required for the application environment.

Selection Notes

Select this component when 8K Flash capacity and high-speed processing are needed within the ATtinyx61A family. Consider the PDIP-20 package for through-hole assembly requirements. Evaluate power consumption specifications against active and sleep mode needs. Verify that the available I/O lines and peripheral interfaces meet the system design constraints.

Part Context

This part belongs to the ATtinyx61A series, which shares core architectural features but varies in memory size. The ATTINY861A specifically provides the largest memory configuration in this group. It utilizes the same pinout options as other variants in the series, facilitating potential design upgrades or downgrades based on storage requirements.

Replacement Considerations

ATtiny861V-10PU

FAQ

What is the maximum clock frequency supported by the ATTINY861A?

The device supports a maximum clock frequency of 20 MHz.

Does the ATTINY861A support in-system programming?

Yes, it supports In-System Programming (ISP) via the SPI port.

How many general purpose I/O lines are available?

The device provides 16 programmable I/O lines organized into Port A and Port B.