ATTINY25-20SHR

Overview

The ATTINY25-20SHR is an 8-bit AVR microcontroller manufactured by Microchip Technology. It features a high-performance, low-power architecture with 2 KB of In-System Programmable Flash memory, 128 bytes of EEPROM, and 128 bytes of SRAM. The device supports a maximum clock frequency of 20 MHz at supply voltages between 4.5 V and 5.5 V, and operates within a voltage range of 2.7 V to 5.5 V. It includes six programmable I/O lines, a 4-channel 10-bit ADC, and a Universal Serial Interface (USI). The component is housed in an 8-lead SOIC package and is designed for industrial temperature ranges.

Feature Summary

• AVR enhanced RISC architecture executing powerful instructions in a single clock cycle
• In-system programmable non-volatile memory including Flash, EEPROM, and SRAM
• Integrated peripheral set featuring timers, counters, PWM channels, and analog-to-digital conversion
• Supports multiple power-saving modes such as Idle, Power-down, and ADC Noise Reduction

Applications

• Embedded control systems requiring low power consumption
• Battery-powered devices utilizing efficient sleep modes
• Industrial applications operating within specified temperature ranges
• Systems interfacing via SPI or I2C compatible serial protocols

Procurement Notes

Verify the specific ordering code suffix against manufacturer documentation to confirm package type and lead finish specifications. Ensure that the selected variant matches the required speed grade and supply voltage constraints for the target application environment. Cross-reference the datasheet revision history to identify any known errata relevant to the manufacturing lot.

Selection Notes

Select this component when a compact 8-bit solution with sufficient program memory and analog capabilities is required. Consider the 20 MHz speed grade if operation above 10 MHz is necessary at standard supply voltages. Evaluate the available package options to determine compatibility with existing board layouts and assembly processes.

Part Context

This device belongs to the ATtiny series of 8-bit microcontrollers based on the AVR core. It shares architectural similarities with the ATtiny45 and ATtiny85, differing primarily in memory capacities. The series is characterized by its picoPower technology and extensive peripheral integration suitable for cost-sensitive embedded designs.

Replacement Considerations

ATtiny25V-20SHR

FAQ

What is the function of the 'R' suffix in the part number?

The 'R' suffix indicates that the device is supplied in tape and reel packaging format.

Does this microcontroller support debugWIRE?

Yes, the ATtiny25 series includes an on-chip debugWIRE system for in-circuit debugging.