ATTINY826-SUR

Overview

The ATtiny826-SUR is an 8-bit microcontroller from the Microchip tinyAVR® 2 family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 8 KB of in-system programmable Flash memory, 1 KB of SRAM, and 128 bytes of EEPROM. The device operates within a supply voltage range of 1.8V to 5.5V and supports industrial temperature ranges (-40°C to +85°C). Key peripherals include a 12-bit differential ADC with PGA, Event System, CCL, USART, SPI, TWI, and UPDI programming interface.

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 features such as a 12-bit differential ADC with Programmable Gain Amplifier (PGA) and multiple internal voltage references.
• Supports flexible inter-peripheral signaling through an integrated Event System and Configurable Custom Logic (CCL) with four Look-Up Tables.
• Provides versatile communication options including dual USARTs, Host/Client SPI, and TWI interfaces with dual address match capabilities.

Applications

• Industrial control systems requiring robust peripheral integration
• Battery-powered devices utilizing low-power sleep modes
• Sensor interfaces leveraging the high-resolution differential ADC
• Embedded applications needing secure data storage via lockbit protection

Procurement Notes

Verify the specific ordering suffix 'SUR' corresponds to the Tape & Reel packaging format as indicated by the 'R' designation in the part numbering system. Confirm that the component meets the required industrial temperature specifications (-40°C to +85°C) for your intended environment. Ensure compatibility with the UPDI programming interface for development and production flashing.

Selection Notes

Select this model when vertical migration within the tinyAVR® 2 family is desired without code modification. Choose this variant if 8 KB of Flash and 1 KB of SRAM are sufficient for application logic. Consider this part for designs requiring a 20-pin package with extensive I/O availability and advanced analog conversion capabilities compared to smaller pin-count variants.

Part Context

This component belongs to the tinyAVR® 2 family, which offers horizontal and vertical migration paths across different pin counts and memory sizes. The ATtiny826 specifically provides a balance of processing power and peripheral richness suitable for complex embedded tasks. It shares architectural similarities with other members like the ATtiny824 and ATtiny827, facilitating scalable design strategies.

Replacement Considerations

Direct substitutes within the same family include ATtiny824 and ATtiny827, provided pin count and feature requirements align. Verify package compatibility (SOIC-20 or VQFN-20) when selecting alternatives. Ensure that any replacement maintains support for the UPDI interface and similar memory capacities to preserve software compatibility.