ATTINY424-XF

Overview

The ATtiny424-XF is an 8-bit microcontroller from the tinyAVR 2 family, featuring a 14-pin TSSOP package. It includes 4 KB of Flash memory, 512 bytes of SRAM, and 128 bytes of EEPROM. The device operates at a maximum clock frequency of 20 MHz with a supply voltage range of 1.8 V to 5.5 V. It provides 12 general-purpose I/O pins and supports industrial temperature ranges (-40°C to +85°C). Key peripherals include a 12-bit ADC with PGA, two USARTs, SPI, TWI, and a Real-Time Counter.

Feature Summary

• Features a high-performance AVR CPU with hardware multiplier running up to 20 MHz.
• Includes a 12-bit differential ADC with Programmable Gain Amplifier for accurate analog sensing.
• Supports flexible inter-peripheral signaling via an integrated Event System.
• Offers low-power operation with multiple sleep modes and configurable Brown-out Detection.

Applications

• Industrial control systems requiring robust peripheral interfaces
• Battery-powered devices utilizing low-power architecture
• Sensor nodes using differential ADC inputs
• Communication modules employing USART or TWI protocols

Procurement Notes

Verify the specific ordering suffix 'XF' corresponds to the TSSOP-14 package and -40°C to +85°C temperature grade as defined in the official datasheet. Confirm that the 'X' indicates TSSOP/SSOP packaging and 'F' denotes the extended temperature range. Ensure compatibility with UPDI programming tools for development.

Selection Notes

Select this component when a compact 14-pin form factor is required alongside 4 KB of program memory. It is suitable for applications needing a 12-bit ADC with PGA and multiple communication interfaces within a small footprint. Consider vertical migration options within the tinyAVR 2 family if future pin count expansion is anticipated without code modification.

Part Context

This part belongs to the tinyAVR 2 family, which emphasizes low power and high performance. The ATtiny424 variant specifically targets cost-sensitive applications requiring moderate I/O counts and analog capabilities. It shares architectural similarities with larger variants like the ATtiny824 and ATtiny1624, allowing for potential design scalability.

Replacement Considerations

For direct pin-compatible upgrades within the same family, consider the ATtiny824-XF or ATtiny1624-XF for increased memory. For legacy AVR replacements, verify register-level compatibility with older tinyAVR 1-Series devices, though software adaptation may be necessary due to architectural differences.

FAQ

What is the maximum operating frequency for the ATtiny424-XF?

The device supports a maximum clock frequency of 20 MHz.

Does the ATtiny424-XF support differential analog input?

Yes, it features a 12-bit differential Analog-to-Digital Converter (ADC) with a Programmable Gain Amplifier (PGA).

How many General Purpose I/O pins are available on the 14-pin package?

The 14-pin version provides 12 general-purpose I/O pins.