ATTINY1626-XFR

Overview

The ATtiny1626-XFR is an 8-bit microcontroller from the Microchip tinyAVR® 2 family, featuring a 20 MHz AVR CPU with hardware multiplier. It includes 16 KB of self-programmable Flash memory, 2 KB of SRAM, and 256 B of EEPROM. The device provides 18 general-purpose I/O pins and supports a supply voltage range of 1.8 V to 5.5 V. Key peripherals include a 12-bit differential ADC with PGA, two USARTs, SPI, TWI, and an Event System for inter-peripheral signaling.

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 communication through dual USARTs with auto-baud, Master/Slave SPI, and TWI with dual address match capabilities.
• Integrates an Event System for CPU-independent peripheral signaling and Configurable Custom Logic (CCL) with programmable Look-Up Tables.

Applications

• Industrial control systems requiring robust peripheral connectivity
• Battery-powered devices utilizing low-power sleep modes
• Sensor interfaces leveraging the differential ADC and PGA
• Communication nodes using USART or TWI protocols

Procurement Notes

Verify that the ordering suffix 'XFR' corresponds to the TSSOP package and Tape & Reel carrier type as defined in the datasheet naming convention. Confirm the temperature grade matches the required operational environment, as standard variants typically cover -40°C to +85°C while extended grades reach +125°C. Ensure compatibility with the UPDI programming interface for development and production flashing.

Selection Notes

Select this component when vertical migration within the tinyAVR® 2 family is desired without code modification. Choose this model over the ATtiny1624 if additional I/O pins are needed, or over the ATtiny1627 if a smaller footprint is preferred. Consider the specific speed grades relative to the operating voltage; higher frequencies require higher supply voltages within the specified range.

Part Context

This part belongs to the tinyAVR® 2 family, which shares pin and feature compatibility for easy vertical migration. The ATtiny1626 specifically offers a balance of memory and I/O count in a 20-pin package. It utilizes the latest Microchip technologies including the Event System and accurate analog peripherals, distinguishing it from previous generations like the tinyAVR® 1 series.

Replacement Considerations

Direct substitutes within the same family include the ATtiny1624 (14-pin) and ATtiny1627 (24-pin), provided pin counts align with the design. Cross-family replacements require careful review of instruction set compatibility and peripheral mapping differences between AVR architectures.