ATTINY424-XFR

Overview

The ATTINY424-XFR is an 8-bit microcontroller from the Microchip tinyAVR 2 family, utilizing the AVR CPU with a hardware multiplier. It features 4 KB of Flash memory, 512 B 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 PGA, two USARTs, SPI, TWI, and an Event System. The component is housed in a TSSOP package and supports industrial (-40°C to +85°C) and extended (-40°C to +125°C) temperature ranges.

Feature Summary

• Features a high-performance low-power AVR CPU 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).
• Supports flexible inter-peripheral signaling through a dedicated Event System and Configurable Custom Logic (CCL).
• Provides versatile communication interfaces including dual USARTs, SPI, and TWI with multiple speed modes.

Applications

• Industrial control systems requiring robust peripheral integration.
• Battery-powered devices benefiting from low-power architecture and sleep modes.
• Sensor interface applications utilizing the differential ADC and programmable gain amplifier.
• Automotive electronics meeting AEC-Q100 qualification standards.

Procurement Notes

Verify that the ordering suffix 'XFR' corresponds to the Tape & Reel carrier type and the specific temperature grade indicated in the datasheet. Confirm package availability for the TSSOP form factor directly with Microchip Sales Offices if tape and reel options are required. Ensure compatibility with existing design specifications regarding pin count and memory size before finalizing procurement orders.

Selection Notes

Select this model when vertical migration within the tinyAVR 2 family is desired without code modification. Choose this variant for designs requiring a balance of 4 KB Flash and 14-pin footprint. Consider the extended temperature grade if operation beyond standard industrial limits is necessary. Evaluate the 12-bit ADC resolution against simpler 10-bit alternatives if higher precision is critical for signal acquisition.

Part Context

This component belongs to the tinyAVR 2 family, which offers full pin and feature compatibility across different memory sizes. The ATtiny424 serves as the entry-level device in the 14-pin category, providing essential peripherals like TCA, TCB, and RTC. It shares architectural similarities with larger variants such as the ATtiny824 and ATtiny1624, facilitating scalable product development.

Replacement Considerations

Direct substitutes include other members of the tinyAVR 2 family with identical pinouts, such as the ATtiny824 or ATtiny1624, provided memory requirements are met. Verify that any replacement maintains the same package type and temperature rating to ensure physical and environmental compatibility.