ATTINY25-20SI

Overview

The ATTINY25-20SI is an 8-bit AVR microcontroller manufactured by Microchip Technology, operating at a maximum frequency of 20 MHz with a supply voltage range of 2.7V to 5.5V. It features 2KB of In-System Programmable Flash memory, 128 bytes of EEPROM, and 128 bytes of SRAM. The device includes a 4-channel 10-bit ADC, Universal Serial Interface (USI), two PWM channels, and six programmable I/O lines. It utilizes the Advanced RISC architecture for efficient processing and is housed in an 8-lead SOIC package.

Feature Summary

• Advanced RISC architecture enabling single-clock-cycle execution for high throughput efficiency
• In-system programmable non-volatile memory including Flash, EEPROM, and SRAM
• Integrated analog-to-digital converter with multiple channel support
• Universal Serial Interface supporting standard communication protocols

Applications

• Industrial embedded control systems
• Battery-powered devices requiring low power consumption
• General-purpose digital logic replacement
• Sensor interface modules

Procurement Notes

Verify that the ordering code matches the specific speed grade and package requirements for the target application. Confirm compliance with RoHS directives if environmental standards are mandatory. Ensure the industrial temperature range aligns with operational conditions. Cross-reference datasheet revision history for any errata or functional updates relevant to the production batch.

Selection Notes

Select this component when a balance of processing speed and power efficiency is required within a compact surface-mount footprint. Consider the 20 MHz speed grade only if the system operates within the specified 2.7V to 5.5V voltage range. Evaluate the available I/O lines and peripheral counts against application needs before choosing higher capacity variants in the ATtiny series.

Part Context

This device belongs to the ATtiny family of 8-bit AVR microcontrollers, designed for cost-sensitive and space-constrained applications. It shares architectural similarities with other members like the ATtiny45 and ATtiny85, differing primarily in memory capacities. The series is known for its picoPower technology and compatibility with standard development tools.

Replacement Considerations

ATtiny25-20SU serves as a direct pin-compatible alternative with identical electrical specifications but may differ in packaging supplier details. Verify that any substitute maintains the same 20 MHz speed grade and industrial temperature rating.