ATTINY426-MU

Overview

The ATtiny426-MU is an 8-bit microcontroller from the Microchip tinyAVR 2 family, utilizing the AVR CPU with a hardware multiplier. It features 8 KB of Flash memory, 1 KB of SRAM, and 128 B of EEPROM. The device operates at a maximum clock frequency of 20 MHz within a supply voltage range of 1.8 V to 5.5 V. It includes a 12-bit differential ADC with a Programmable Gain Amplifier (PGA) and up to 15 input channels. The component is housed in a 20-pin VQFN package and supports industrial temperature ranges.

Feature Summary

• Features a high-performance low-power AVR CPU running at up to 20 MHz with single-cycle I/O access and a two-cycle hardware multiplier.
• Includes advanced analog peripherals such as a 12-bit differential ADC with PGA and multiple internal voltage references for accurate signal acquisition.
• Supports flexible inter-peripheral signaling through an Event System and Configurable Custom Logic (CCL) with programmable Look-Up Tables.
• Provides versatile communication interfaces including USART, SPI, and TWI, alongside a single-pin Unified Program and Debug Interface (UPDI).

Applications

• Battery-powered sensor nodes requiring low power consumption
• Industrial control systems with analog signal processing needs
• Smart home automation devices
• Portable consumer electronics

Procurement Notes

Verify the specific ordering suffix 'MU' corresponds to the 20-pin VQFN package and -40°C to +85°C temperature range. Confirm that the datasheet revision matches the required specifications. Ensure compatibility with the UPDI programming interface for development and production. Check for any automotive variant requirements if operating in harsh environments.

Selection Notes

Select this model when 8 KB of program memory and 1 KB of SRAM are sufficient for the application logic. The 20-pin form factor offers a balance between pin count and package size. Consider the integrated 12-bit ADC and CCL for applications requiring custom logic or precise analog measurements without external components.

Part Context

This component belongs to the tinyAVR 2 family, which emphasizes vertical migration compatibility within the series. It shares architectural similarities with the ATtiny424 and ATtiny427 but provides a specific combination of memory size and pin count suitable for mid-range embedded applications.

Replacement Considerations

ATtiny424-MU

FAQ

What is the maximum operating frequency of the ATtiny426-MU?

The ATtiny426-MU can operate at a maximum frequency of 20 MHz.

Does the ATtiny426-MU support differential ADC inputs?

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