ATTINY1626-SF

Overview

The ATtiny1626-SF is an 8-bit microcontroller from the tinyAVR® 2 family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 16 KB of Flash memory, 2 KB of SRAM, and 256 B of EEPROM. The device operates within a supply voltage range of 1.8 V to 5.5 V and supports industrial temperature ranges (-40°C to +125°C). It provides 18 general-purpose I/O pins in a 20-pin package (SOIC or SSOP) and integrates peripherals such as a 12-bit ADC with PGA, USART, SPI, TWI, and Event System.

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 like 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).
• Offers versatile communication interfaces including dual USARTs, SPI, and TWI with fast mode plus support.

Applications

• Low-power sensor nodes requiring precise analog signal acquisition.
• Industrial control systems needing robust communication protocols.
• Battery-operated devices utilizing extended temperature range capabilities.
• General-purpose embedded applications requiring non-volatile data storage.

Procurement Notes

Verify the specific ordering suffix 'SF' against Microchip's official documentation to confirm the exact package type (SOIC or SSOP) and temperature grade. Ensure compatibility with your design's pinout requirements, as the 20-pin variant offers 18 I/O lines. Confirm that the selected variant meets the required operating voltage and frequency specifications for your application environment.

Selection Notes

Select this component when vertical migration from other tinyAVR 2 devices is needed without code modification. Choose the ATtiny1626 over the 14-pin variant if more I/O pins are required, or over the 24-pin variant if space constraints exist. Consider the -40°C to +125°C temperature range if operating in harsh environments. Verify that the 16 KB Flash and 2 KB SRAM meet the memory demands of the intended firmware.

Part Context

The ATtiny1626 belongs to the tinyAVR® 2 family, which shares architectural similarities with the tinyAVR® 1 series but adds enhanced analog and digital peripherals. It is part of a scalable portfolio ranging from 4 KB to 32 KB of Flash memory. The family emphasizes low power consumption and high performance, making it suitable for cost-sensitive applications requiring efficient processing and rich peripheral sets.

Replacement Considerations

The ATtiny1626 is fully pin and feature compatible with the ATtiny1624 and ATtiny1627 within the same family, allowing for vertical migration without code changes. Check datasheet DS40002234A for specific electrical characteristic differences between variants. No direct cross-family replacements are documented; consider the ATtiny1616 only if package and peripheral differences are acceptable.