ATTINY861-15XZ

Overview

The ATTINY861-15XZ is an automotive-grade 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 16 MHz within the 4.5V to 5.5V supply range and supports a wide operating temperature from -40°C to +125°C. The device includes 16 I/O lines, a 10-bit ADC with multiple channels, timers, and a universal serial interface.

Feature Summary

• Automotive qualified per AEC-Q100 Grade 1 standards
• High-performance single-cycle RISC architecture
• Integrated analog comparator and programmable watchdog timer
• Supports debugWIRE on-chip debugging system

Applications

• Automotive sensor interfaces
• Body control modules
• Low-power embedded systems requiring extended temperature ranges

Procurement Notes

Verify the specific suffix 'XZ' against official Microchip documentation to confirm package type and temperature grade. Ensure the source document explicitly lists this exact part number variant, as ordering suffixes define physical characteristics. Confirm availability status directly with the manufacturer or authorized distributors.

Selection Notes

Select this component for applications requiring AEC-Q100 compliance and operation up to 125°C. The 16MHz speed grade is suitable for processing tasks within the 4.5V to 5.5V voltage window. Consider the 16 I/O count and ADC resolution when designing peripheral interfaces.

Part Context

This model belongs to the ATtiny261/461/861 family of automotive microcontrollers. These devices share the same core architecture and feature set, differentiated primarily by memory sizes (2K, 4K, or 8K Flash) and specific ordering suffixes that determine package and temperature specifications.

Replacement Considerations

Consult official substitution guides for equivalent automotive-grade parts. Verify pin compatibility and memory size requirements before replacing.