ATTINY45-15SZ

Overview

The ATTINY45-15SZ is an 8-bit AVR microcontroller manufactured by Microchip Technology, featuring a 15 MHz maximum clock frequency. It integrates 4 KB of in-system programmable Flash memory, 256 bytes of SRAM, and 512 bytes of EEPROM. The device operates within a supply voltage range of 2.7 V to 5.5 V and includes a 10-bit analog-to-digital converter with up to six channels. It provides five general-purpose I/O lines and supports multiple communication interfaces including SPI, TWI (I2C compatible), and USI.

Feature Summary

• Integrates 4 KB of non-volatile Flash program memory with in-system programming capability.
• Includes 256 bytes of static RAM and 512 bytes of electrically erasable programmable read-only memory for data storage.
• Features a 10-bit analog-to-digital converter supporting multiple input channels for signal acquisition.
• Supports serial communication protocols such as SPI, TWI, and Universal Serial Interface.

Applications

• Battery-powered consumer electronics requiring low power consumption
• Industrial control systems utilizing sensor inputs via ADC
• Communication modules implementing SPI or I2C protocols

Procurement Notes

Verify the specific suffix 'SZ' against official Microchip documentation to confirm package type and temperature grade specifications. Ensure compatibility with existing PCB footprints and reflow profiles. Confirm RoHS compliance status through current datasheets. Validate that the 15 MHz speed grade meets system timing requirements. Check for any obsolescence notices or lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a balance of moderate code capacity and peripheral richness is required for compact designs. The 4 KB Flash allows for complex firmware while maintaining a small footprint. Consider the 5 V operating range if interfacing directly with standard logic levels without level shifters. Evaluate power consumption characteristics against battery life requirements for portable applications.

Part Context

This part belongs to the ATtiny family of 8-bit AVR microcontrollers, known for picoPower technology and high code efficiency. It shares architectural similarities with other ATtiny devices but offers specific memory and pin configurations tailored for cost-sensitive embedded applications. The series emphasizes low power operation across various voltage ranges.

Replacement Considerations

Cross-reference with ATTINY45-20SU or ATTINY45V-10SU for alternative speed grades or voltage variants. Verify pinout compatibility with ATTINY25 or ATTINY85 models if memory scaling is needed. Consult Microchip's official substitution guide for qualified replacements ensuring identical electrical and mechanical parameters.