ATTINY427-MU

Overview

The ATtiny427-MU is an 8-bit microcontroller from the Microchip tinyAVR 2 family, featuring a 20-pin VQFN package. It integrates 16 KB of Flash memory, 1 KB of SRAM, and 256 B of EEPROM. The device operates at a maximum clock frequency of 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, four CCL LUTs, and one RTC.

Feature Summary

• Features a high-performance AVR CPU with hardware multiplier running up to 20 MHz.
• Includes a 12-bit differential ADC with Programmable Gain Amplifier for accurate analog conversion.
• Supports flexible inter-peripheral signaling via an integrated Event System.
• Provides Configurable Custom Logic (CCL) with programmable Look-Up Tables.

Applications

• Industrial control systems requiring low-power operation
• Battery-powered devices utilizing efficient sleep modes
• Sensor interfaces leveraging the differential ADC capabilities

Procurement Notes

Verify the specific ordering suffix 'MU' corresponds to the VQFN package and industrial temperature range (-40°C to +85°C). Confirm that the component is sourced from authorized distributors to ensure authenticity. Check for any recent revisions in the datasheet DS40002311A regarding electrical characteristics or pinout compatibility before finalizing procurement.

Selection Notes

Select this model when vertical migration within the tinyAVR 2 family is required without code modification. It is suitable for applications needing 20 pins with extensive peripheral support, including multiple communication interfaces and advanced analog features. Consider the 16 KB Flash capacity for complex firmware requirements compared to smaller variants like the ATtiny424.

Part Context

This component belongs to the tinyAVR 2 family, which offers horizontal and vertical migration paths. The ATtiny427 provides 16 KB of Flash and 22 general-purpose I/O pins, positioning it between the 8 KB/18 I/O ATtiny426 and the 32 KB/24-pin ATtiny827 in terms of resource availability within the same architectural framework.

Replacement Considerations

ATtiny827-MU

FAQ

What is the maximum operating frequency of the ATtiny427?

The ATtiny427 can operate at a maximum frequency of 20 MHz.

Does the ATtiny427 support differential analog input?

Yes, it includes a 12-bit differential Analog-to-Digital Converter (ADC) with a Programmable Gain Amplifier (PGA).