ATTINY85-15ST

Overview

The ATTINY85-15ST is an 8-bit AVR microcontroller manufactured by Microchip Technology. It features 8 KB of in-system programmable Flash memory, 512 bytes of EEPROM, and 512 bytes of SRAM. The device operates with a maximum clock frequency of 15 MHz and includes a 10-bit Analog-to-Digital Converter (ADC). It supports up to 6 I/O pins and functions within a supply voltage range of 2.7 V to 5.5 V. The component is housed in a PDIP-8 package and is rated for operation across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates 8 KB of non-volatile Flash program memory with 512 bytes of EEPROM and 512 bytes of static RAM for data storage.
• Includes a 10-bit ADC module capable of converting analog signals into digital values for sensor interfacing.
• Supports system-in-programming via SPI interface and on-chip debugging using the debugWIRE protocol.

Applications

• Battery-powered embedded systems requiring low power consumption
• Simple sensor interface nodes utilizing the internal ADC
• Basic logic control applications in consumer electronics

Procurement Notes

Verify the specific suffix 'ST' against the official Microchip datasheet to confirm the PDIP-8 package type and commercial temperature rating. Ensure compatibility with standard AVR programming tools such as AVRDude or Atmel Studio. Confirm that the selected development environment supports the ATtiny85 architecture and appropriate fuse bit configurations for the 15 MHz speed grade.

Selection Notes

Select this component when a compact 8-bit AVR solution with moderate program memory is required. The 15 MHz speed grade offers a balance between processing capability and power efficiency compared to higher-speed variants. Consider the PDIP-8 package if through-hole mounting is necessary for prototyping or specific mechanical constraints. Verify that the 6 available I/O pins meet the interface requirements of the target application.

Part Context

This part belongs to the ATtiny85 family of 8-bit AVR microcontrollers from Microchip Technology. The series is characterized by its small footprint, low power consumption, and rich peripheral set relative to its size. The ATtiny85 variant specifically provides 8 KB of Flash, distinguishing it from lower-memory models like the ATtiny45. It is widely used in space-constrained designs where cost and power efficiency are critical factors.

Replacement Considerations

Compatible substitutes include the ATTINY85V-10SU for lower-speed applications and other ATtiny85 variants with different package suffixes such as 'PU' for PDIP or 'MU' for MLF. Ensure replacement parts match the required operating voltage and temperature range specifications.