ATTINY25-20SSU

Overview

The ATTINY25-20SSU is an 8-bit AVR microcontroller from Microchip Technology, utilizing the enhanced RISC architecture. It features a 2 KB In-System Programmable Flash memory with 10,000 write/erase cycles, 128 bytes of EEPROM with 100,000 endurance, and 128 bytes of internal SRAM. The device operates at frequencies up to 20 MHz within a 2.7V to 5.5V supply voltage range. It includes six programmable I/O lines, a 4-channel 10-bit ADC, USI interface, two PWM channels, and a programmable Watchdog Timer. Packaged in an 8-pin SOIC (S8S1), it supports industrial temperature ranges.

Feature Summary

• High-performance 8-bit AVR core executing most instructions in a single clock cycle for efficient processing.
• Non-volatile memory system comprising ISP Flash, EEPROM, and SRAM with programming lock security.
• Integrated peripheral set including a 10-bit ADC, Universal Serial Interface (USI), and dual PWM outputs.
• Low-power operation with selectable Idle, ADC Noise Reduction, and Power-down modes.

Applications

• Embedded control systems requiring low power consumption
• Battery-powered devices utilizing picoPower technology
• Industrial applications operating within extended temperature ranges
• Systems requiring in-system programming via SPI

Procurement Notes

Verify the specific ordering code suffix against the manufacturer's official documentation to confirm package type, lead finish, and speed grade. Ensure the selected variant matches the required operating voltage and temperature range specifications for the intended application environment.

Selection Notes

Select this component when a compact 8-bit solution with sufficient flash memory and analog capabilities is needed. Consider the 20 MHz speed grade for performance requirements within the 2.7V to 5.5V operational window. Evaluate the 8-pin SOIC footprint constraints against available PCB space and thermal management needs.

Part Context

This device belongs to the ATtiny series of 8-bit AVR microcontrollers manufactured by Microchip Technology. It shares architectural similarities with the ATtiny45 and ATtiny85 models, differing primarily in memory capacities. The series is designed for cost-sensitive embedded applications requiring reliable performance and low power consumption.

Replacement Considerations

ATtiny45-20SSU, ATtiny85-20SSU

FAQ

What is the maximum operating frequency for the ATTINY25-20SSU?

The device supports a maximum clock frequency of 20 MHz when operating within the 2.7V to 5.5V supply voltage range.

Does the ATTINY25-20SSU support in-system programming?

Yes, the program memory can be re-programmed In-System through an SPI serial interface using conventional programmers or on-chip boot code.