ATTINY861-20MU

Overview

The ATTINY861-20MU 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 clock frequency of 20 MHz when powered between 4.5V and 5.5V. The device includes 16 programmable I/O lines, an 11-channel 10-bit ADC, and a Universal Serial Interface. It utilizes a 32-pad MLF package and supports industrial temperature ranges.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle
• Non-volatile memory with high endurance for Flash and EEPROM
• Integrated analog peripherals including a 10-bit ADC and comparator
• Multiple power-saving modes to optimize energy consumption

Applications

• Battery-powered sensor nodes
• Industrial control systems
• Consumer electronics requiring low power operation

Procurement Notes

Verify the specific speed grade suffix '20' corresponds to the required 20 MHz operational frequency at the target supply voltage. Confirm the MLF package availability and lead times through authorized Microchip distributors. Ensure compliance with RoHS directives and check for any obsolescence notices regarding this specific variant.

Selection Notes

Select this model when 8K Flash capacity and 20 MHz performance are required within the ATtiny861 family. The MLF package suits space-constrained surface-mount designs. Compare against the V-series variants if lower voltage operation (1.8V) is necessary, as the non-V version typically requires higher minimum voltages for full speed.

Part Context

This component belongs to the ATtinyx61 series of 8-bit AVR microcontrollers manufactured by Microchip Technology. It shares architectural similarities with the ATtiny261 and ATtiny461 but offers increased memory resources. The series is designed for applications balancing processing power with low power consumption.

Replacement Considerations

Direct substitutes include other ATtiny861 variants with different package options or speed grades, such as ATTINY861V-20MU for lower voltage support. Cross-referencing pin compatibility and memory specifications is essential when selecting alternative components.