ATTINY404-SSFR

Overview

The ATTINY404-SSFR is an 8-bit AVR microcontroller featuring 4 KB of Flash memory, 256 bytes of SRAM, and 128 bytes of EEPROM. It operates at a maximum clock frequency of 20 MHz within a 14-pin SOIC package. The device supports a supply voltage range from 1.8 V to 5.5 V and includes a 10-bit ADC with 115 ksps sampling rate. It provides 12 programmable I/O lines and integrates peripherals such as USART, SPI, TWI, TCA, TCB, RTC, CCL, and UPDI.

Feature Summary

• Integrates Core Independent Peripherals (CIP) including Event System and SleepWalking for low-power operation
• Features a single-pin Unified Program Debug Interface (UPDI) for programming and debugging
• Includes Configurable Custom Logic (CCL) with two Look-Up Tables for hardware logic implementation
• Supports automated CRC memory scan for data integrity verification

Applications

• Low-power sensor nodes utilizing Event System and SleepWalking
• Industrial control systems requiring configurable custom logic
• Battery-operated devices leveraging picoPower Technology
• Applications needing automated CRC memory scan for reliability

Procurement Notes

Verify the specific suffix 'SSFR' corresponds to the 14-SOIC package and tape-and-reel packaging format. Confirm the temperature grade matches the required operational range, as options exist for -40°C to 105°C and -40°C to 125°C. Ensure the speed grade aligns with the target operating voltage and frequency requirements.

Selection Notes

Select this component when 4 KB of program memory and 256 bytes of RAM are sufficient for the application. Consider the 14-pin SOIC package constraints and the availability of 12 I/O lines. Evaluate the need for specific peripherals like the 10-bit ADC or CCL before choosing over smaller variants in the ATtiny204/404 series.

Part Context

This part belongs to the ATtiny204/404 family within the tinyAVR 0-Series. It shares architectural similarities with the ATtiny204 but offers double the Flash and SRAM capacity. The series emphasizes low power consumption through picoPower Technology and core-independent peripherals.

Replacement Considerations

ATtiny204-SSFR: Offers identical pinout and features but with reduced memory (2 KB Flash, 128 B SRAM). Verify if the reduced memory meets application requirements.

FAQ

What is the function of the SleepWalking feature?

SleepWalking allows selected peripherals to operate independently while the CPU is in sleep mode, enabling wake-up functionality without consuming significant power.

How does the CCL enhance peripheral functionality?

The Configurable Custom Logic (CCL) uses two programmable Look-Up Tables to implement complex combinational logic functions in hardware, reducing CPU load.

What is the purpose of the automated CRC memory scan?

It performs cyclic redundancy checks on the Flash memory to detect corruption, ensuring data integrity during operation.