ATTINY426-XUR

Overview

The ATtiny426-XUR is an 8-bit AVR microcontroller from the tinyAVR 2 family, featuring a 20-pin TSSOP package. It includes 4 KB of Flash memory, 512 bytes of SRAM, and 128 bytes of EEPROM. The device operates at up to 20 MHz with a supply voltage range of 1.8V to 5.5V. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, and an Event System.

Feature Summary

• Features a high-performance low-power AVR CPU with hardware multiplier and single-cycle I/O access.
• Includes a 12-bit differential Analog-to-Digital Converter (ADC) with Programmable Gain Amplifier (PGA).
• Supports flexible inter-peripheral signaling through a dedicated Event System.
• Provides versatile communication interfaces including dual USARTs, SPI, and TWI.

Applications

• Industrial control systems requiring robust peripheral integration.
• Battery-powered devices utilizing low-power architecture and sleep modes.
• Sensor interface applications leveraging the differential ADC capabilities.

Procurement Notes

Verify the specific ordering suffix 'XUR' corresponds to the TSSOP-20 package and industrial temperature range (-40°C to +85°C). Confirm that the component meets RoHS compliance requirements for your assembly process. Check for any end-of-life or not-recommended-for-new-designations in current Microchip catalogs before finalizing procurement plans.

Selection Notes

Select this model when vertical migration within the tinyAVR 2 family is required without code modification. Choose this part if the design necessitates 20 pins with 18 general-purpose I/Os and multiple communication channels. Ensure the application benefits from the integrated Event System to reduce CPU load during peripheral interactions.

Part Context

This component belongs to the tinyAVR 2 family, which shares pin and feature compatibility across different memory sizes. The ATtiny426 variant sits between the 14-pin ATtiny424 and the 24-pin ATtiny427 in terms of physical footprint and available I/O resources. It offers a balance of processing power and peripheral density suitable for compact embedded designs.

Replacement Considerations

ATtiny424-XUR: Fewer pins and I/Os. ATtiny427-XUR: More pins and I/Os. ATtiny826-XUR: Double Flash and SRAM capacity. All variants maintain pin and feature compatibility within the tinyAVR 2 family.