ATTINY402-SSFR

Overview

The ATtiny402-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 voltage range of 1.8 V to 5.5 V. The device includes a 10-bit ADC with six channels, three timers/counters, and multiple communication interfaces including USART, SPI, and TWI. It utilizes a single-pin UPDI for programming and debugging, housed in a 14-pin SOIC package.

Feature Summary

• Integrates picoPower technology with configurable sleep modes and SleepWalking peripherals for optimized energy efficiency.
• Features a high-performance 8-bit AVR RISC CPU capable of executing instructions in a single cycle at up to 20 MHz.
• Includes core-independent peripherals such as a Real-Time Counter (RTC) and Configurable Custom Logic (CCL) to offload the CPU.

Applications

• Battery-powered sensor nodes requiring low standby current
• Industrial control systems utilizing the Event System for peripheral coordination
• Smart home devices leveraging the CCL for custom logic implementation

Procurement Notes

Verify that the ordering suffix 'SSFR' corresponds to the 14-pin SOIC package and tape-and-reel packaging format. Confirm the temperature grade matches the specific application requirements, as industrial options are available. Ensure compatibility with the single-pin UPDI interface for development tools.

Selection Notes

Select this component when 4 KB of program memory and 256 bytes of RAM are sufficient for the application logic. It is suitable for designs requiring analog input via the 10-bit ADC or precise timing using the RTC. Consider the 14-pin package availability if more I/O lines are needed compared to the 8-pin variant.

Part Context

This part belongs to the ATtiny202/402 series, which shares the same architecture but differs in memory size. The ATtiny402 provides double the Flash and SRAM capacity of the ATtiny202 while maintaining identical peripheral sets and pinout configurations within the tinyAVR 0-Series family.

Replacement Considerations

ATtiny402-MU

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 events without consuming significant power.

How does the Event System benefit system design?

The Event System enables direct hardware connections between peripherals, reducing CPU intervention and latency for time-critical tasks.