ATTINY25-20PI

Overview

The ATTINY25-20PI is an 8-bit AVR microcontroller manufactured by Microchip Technology, housed in an 8-pin PDIP package. It features a high-performance RISC architecture with 2 KB of In-System Programmable Flash, 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, two PWM channels, and a Universal Serial Interface.

Feature Summary

• AVR enhanced RISC architecture executing most instructions in a single clock cycle for efficient processing.
• Non-volatile memory including ISP Flash, EEPROM, and internal SRAM with programming lock security.
• Integrated peripheral set featuring a 10-bit ADC, analog comparator, and multiple timer/counters.
• Low power consumption with selectable idle, ADC noise reduction, and power-down modes.

Applications

• Embedded control systems requiring low power operation
• Sensor interface applications utilizing the 10-bit ADC
• Motor control implementations using PWM outputs
• Communication interfaces via SPI or USI protocols

Procurement Notes

Verify the specific ordering code matches the required speed grade and voltage range. Confirm the package type corresponds to the design requirements. Check for RoHS compliance status if environmental regulations apply. Ensure the industrial temperature range meets operational needs. Validate that the component revision aligns with any known errata considerations.

Selection Notes

Select this model when 2 KB of program memory is sufficient for the application logic. Choose the PDIP package for through-hole mounting requirements. Opt for the 20 MHz speed grade if operating voltages are maintained above 4.5 V. Consider the ATtiny25V variant if operation below 2.7 V is necessary. Evaluate pin compatibility if migrating from legacy ATtiny15 designs.

Part Context

This component 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 capacity. The series utilizes a common instruction set and peripheral configuration, facilitating software portability across the family while offering varying storage options.

Replacement Considerations

ATtiny25V-20PI serves as a lower voltage alternative supporting 1.8 V operation. ATtiny45-20PI and ATtiny85-20PI offer increased memory capacities within the same package and speed grade. Verify pinout compatibility and memory size requirements before substituting.