ATTINY25V-10SSUR

Overview

The ATTINY25V-10SSUR is an 8-bit AVR microcontroller featuring 2 KB of in-system programmable Flash memory, 128 bytes of EEPROM, and 128 bytes of SRAM. It operates within a supply voltage range of 1.8 V to 5.5 V and supports clock frequencies up to 10 MHz at this voltage range. The device utilizes an 8-pin SOIC (JEDEC) package with six programmable I/O lines. Key peripherals include a 4-channel 10-bit ADC, two PWM channels, a Universal Serial Interface (USI), and an on-chip analog comparator.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle for high throughput efficiency.
• Non-volatile memory system with 10,000 write/erase cycles for Flash and 100,000 cycles for EEPROM.
• Integrated Universal Serial Interface (USI) supporting standard SPI and 2-wire compatible protocols.
• Programmable Watchdog Timer with a separate internal oscillator for reliable system monitoring.

Applications

• Battery-powered consumer devices requiring low power consumption and extended data retention.
• Industrial control systems utilizing the USI for serial communication interfaces.
• Sensor interface applications leveraging the 10-bit ADC and analog comparator capabilities.

Procurement Notes

Verify that the ordering suffix 'R' corresponds to tape and reel packaging as specified in the manufacturer's documentation. Confirm the specific speed grade and temperature range requirements match the industrial specifications defined for the -10 variant. Ensure compatibility with the 8-pin JEDEC SOIC footprint during PCB layout validation.

Selection Notes

Select this component when a compact 8-bit solution with integrated non-volatile memory and serial interface capabilities is required. The 'V' suffix indicates operation down to 1.8 V, suitable for low-voltage battery applications. Consider the 10 MHz speed grade relative to the 1.8 V to 5.5 V operating range to ensure timing constraints are met under all expected supply conditions.

Part Context

This part belongs to the ATtiny25/45/85 family of 8-bit AVR microcontrollers manufactured by Microchip Technology. The family shares a common core architecture and peripheral set, differentiated primarily by memory sizes and pin counts. The ATTINY25V-10SSUR represents the entry-level configuration with 2 KB Flash in a narrow SOIC package.

Replacement Considerations

ATtiny25V-10SU

FAQ

What does the 'V' suffix indicate in the part number?

The 'V' suffix denotes that the device is rated for operation at a minimum supply voltage of 1.8 V, compared to the standard version which typically requires a higher minimum voltage.

How is the USI peripheral configured?

The Universal Serial Interface (USI) can be configured via software to operate in standard SPI mode or a 2-wire compatible mode, allowing flexibility for various serial communication protocols.