ATTINY426-SUR

Overview

The ATTINY426-SUR 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 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 PGA, two USARTs, SPI, TWI, and multiple timers. The component is housed in a 20-pin SOIC package (suffix SS) and is supplied in Tape & Reel format (suffix R), rated for industrial temperatures from -40°C to +85°C.

Feature Summary

• Features a high-performance low-power AVR CPU running 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 Programmable Gain Amplifier (PGA) and up to 15 input channels.
• Supports flexible inter-peripheral signaling via an Event System and Configurable Custom Logic (CCL) with four programmable Look-Up Tables.
• Provides versatile communication interfaces including two USARTs with auto-baud, host/client SPI, and TWI with dual address match.

Applications

• Industrial control systems requiring robust peripheral connectivity
• Battery-powered devices benefiting from low-power architecture and sleep modes
• Sensor interface applications utilizing the differential ADC and PGA capabilities
• Automotive electronics compliant with AEC-Q100 qualification standards

Procurement Notes

Verify that the ordering suffix corresponds to the required package type and temperature rating. Confirm the presence of the 'R' suffix indicates Tape & Reel packaging rather than Tube or Tray formats. Ensure compatibility with existing design constraints regarding pin count and memory size before finalizing procurement orders.

Selection Notes

Select this model when 8 KB of Flash and 1 KB of SRAM are sufficient for application requirements. Choose this variant over the ATtiny424 or ATtiny427 based on specific pin count needs and available I/O configurations. Consider the tinyAVR 2 family benefits if vertical migration without code modification is desired.

Part Context

This component belongs to the tinyAVR® 2 family, which offers vertical migration capabilities without code modification across different pin counts and memory sizes. The family integrates the latest Microchip technologies, including an Event System and accurate analog features, designed for flexible and low-power embedded applications.

Replacement Considerations

ATtiny426-SSU

FAQ

What does the 'SUR' suffix indicate for this part?

The suffix indicates a 20-pin SOIC package (SS), Tape & Reel carrier type (R), and an industrial temperature range (-40°C to +85°C) (U).

Is this device qualified for automotive applications?

Standard versions are not explicitly designated as automotive qualified; however, VAO variants within the same family are designed and tested according to AEC-Q100 requirements.