ATTINY861V-10SU

Overview

The Atmel ATTINY861V-10SU is an 8-bit AVR microcontroller featuring a high-performance RISC core operating at a maximum frequency of 10 MHz. It integrates 8 Kbytes of in-system programmable Flash memory, 512 bytes of EEPROM, and 512 bytes of SRAM. The device utilizes a 20-pin SOIC package and supports a supply voltage range of 1.8 V to 5.5 V. Key peripherals include one 10-bit ADC with 11 channels, one I2C interface, one SPI interface, and three PWM channels. It operates within a temperature range of -40 °C to +85 °C.

Feature Summary

• AVR high-performance RISC architecture with most instructions executing in a single clock cycle
• Non-volatile program and data memories with endurance ratings for write/erase cycles
• Integrated analog-to-digital converter supporting multiple input channels
• Standard communication interfaces including SPI and I2C for system connectivity

Applications

• Solar PV power systems for LED lighting control
• Battery charging and discharging algorithm management
• Current control for power LED arrays
• MPPT algorithm implementation in energy balance systems

Procurement Notes

Verify the specific suffix '10SU' corresponds to the 10 MHz speed grade and SOIC-20 package configuration. Confirm that the 'V' designation indicates the extended voltage or temperature variant as defined in the official datasheet. Ensure the component source provides traceability to Atmel or Microchip Semiconductor documentation to validate authenticity and technical specifications.

Selection Notes

Select this component when an 8-bit AVR MCU with 8 Kbytes of Flash is required for applications needing precise current control or solar energy management. The 10 MHz speed and integrated ADC make it suitable for sensor-based feedback loops. Consider the 20-pin SOIC package constraints and the 1.8 V to 5.5 V operating range during circuit design.

Part Context

The ATTINY861V belongs to the ATtiny family of 8-bit AVR microcontrollers, which share a common instruction set and peripheral structure. This series includes variants with different memory sizes, such as the ATTINY261 and ATTINY461. The ATTINY861V specifically offers the largest Flash capacity within its pin-compatible group, providing more program storage for complex algorithms like MPPT.

Replacement Considerations

Compatible substitutes within the same family include ATTINY461V and ATTINY261V, provided the reduced memory capacities are acceptable. Cross-family replacements from other manufacturers require verification of pin compatibility and register-level code adaptation.