ATTINY261-15SZ

Overview

The ATTINY261-15SZ is an automotive-grade 8-bit AVR microcontroller featuring 2K bytes of in-system programmable Flash, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates within a voltage range of 2.7V to 5.5V and supports clock frequencies up to 16MHz at 4.5V–5.5V or 8MHz at 2.7V–5.5V. The device includes 16 programmable I/O lines, a 10-bit ADC with 11 single-ended channels, two timers/counters, and a Universal Serial Interface. It is housed in a 32-pad MLF package and certified for operation across the full automotive temperature range of –40°C to +125°C.

Feature Summary

• Automotive quality grade verified per AEC-Q100 standards
• High-performance RISC architecture with single-cycle execution
• Integrated analog comparator and programmable watchdog timer
• Supports debugWIRE on-chip debugging system

Applications

• Automotive electronic control units
• Sensor interface modules
• Low-power embedded systems requiring extended temperature tolerance

Procurement Notes

Verify that the ordering suffix 'Z' corresponds to the specified –40°C to +125°C automotive temperature grade. Confirm package type matches the 32-pad MLF configuration. Ensure supply chain sources provide documentation confirming AEC-Q100 Grade 1 qualification status prior to integration.

Selection Notes

Select this component when designing for automotive environments necessitating wide operating temperatures. Compare memory sizes against ATtiny461 and ATtiny861 variants if larger storage is required. Verify voltage requirements align with the 2.7V minimum threshold for lower power applications.

Part Context

This part belongs to the ATtiny261/461/861 family of automotive microcontrollers manufactured by Microchip Technology (formerly Atmel). These devices are optimized for low-power consumption while delivering high processing throughput. The family shares core architectural features but differs in memory capacity and specific speed grades.

Replacement Considerations

ATtiny461-15SZ

FAQ

What is the maximum operating frequency at 2.7V?

At a supply voltage of 2.7V to 5.5V, the maximum operating frequency is 8MHz.

Does this device support in-system programming?

Yes, the Flash program memory can be reprogrammed in-system via the SPI serial interface.