ATTINY427-MUR

Overview

The ATtiny427-MUR is an 8-bit AVR microcontroller from the tinyAVR 2 family, featuring a 20-pin VQFN package. It includes 16 KB of Flash memory, 1 KB of SRAM, and 256 B 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
• Includes a 12-bit differential ADC with Programmable Gain Amplifier (PGA)
• Supports single-pin Unified Program and Debug Interface (UPDI)
• Provides flexible clock options including internal oscillators and external crystal support

Applications

• Industrial control systems
• Battery-powered devices
• Sensor interfaces
• Smart home appliances

Procurement Notes

Verify the MUR suffix indicates Tape & Reel packaging and U temperature grade (-40°C to +85°C). Confirm the specific datasheet revision matches your design requirements. Ensure ESD handling procedures are followed for the VQFN package during assembly.

Selection Notes

Select this model for applications requiring 16 KB of program memory and 22 I/O pins in a compact 20-pin footprint. Consider the 12-bit ADC resolution and Event System capabilities for precise analog signal processing without CPU intervention.

Part Context

This component belongs to the tinyAVR 2 family, designed for vertical migration within the series. It shares pinouts and features with other variants like the ATtiny424 and ATtiny426, allowing for scalable design transitions based on memory and peripheral needs.

Replacement Considerations

Compatible replacements within the same family include ATtiny424 and ATtiny426, provided pin count and memory requirements align. Verify that the alternative part number supports the required package type and operating temperature range.