ATTINY416-MFR

Overview

The ATTINY416-MFR is an 8-bit AVR microcontroller from the tinyAVR 1 series, featuring a 20MHz CPU speed and 4KB of self-programming flash memory. It includes 256 bytes of SRAM and 128 bytes of EEPROM. The device operates within a voltage range of 1.8V to 5.5V and supports an industrial temperature range of -40°C to 105°C. It utilizes a 20-VQFN (3x3) package with 18 I/O lines. Key peripherals include a 12-channel 10-bit ADC, an 8-bit DAC, USART, SPI, TWI, and a Peripheral Touch Controller.

Feature Summary

• Integrates a Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, and wheels with drive shield capabilities for improved noise immunity.
• Features a high-performance 8-bit AVR RISC core operating at up to 20MHz with single-cycle I/O access and a two-cycle hardware multiplier.
• Includes advanced analog peripherals such as a 10-bit ADC with up to 115ksps sampling rate, an 8-bit DAC, and an analog comparator with low propagation delay.
• Supports functional safety applications through integrated features like automatic CRC memory scanning and a windowed watchdog timer.

Applications

• Capacitive touch interface implementations in consumer electronics
• Industrial control systems requiring functional safety compliance
• Battery-powered devices utilizing low-power sleep modes and event systems
• Sensor data acquisition using integrated ADC and analog comparators

Procurement Notes

Verify the specific suffix 'MFR' corresponds to the required tape and reel packaging configuration, as this differs from tray or cut-tape variants. Confirm that the 20-VQFN package dimensions align with your PCB footprint design rules. Ensure the industrial temperature rating (-40°C to 105°C) meets your operational environment requirements before finalizing procurement.

Selection Notes

Select this component when a balance of touch sensing capability and functional safety features is required in a compact 20-pin form factor. It is suitable for applications needing multiple analog inputs and serial communication interfaces without external components. Consider alternative pin counts if more general-purpose I/O lines are necessary beyond the available 18 pins.

Part Context

This part belongs to the Microchip tinyAVR 1 series, which emphasizes low power consumption and functional safety. The series integrates modern peripherals like the event system and SleepWalking capabilities into the classic AVR architecture. It targets cost-sensitive embedded applications requiring reliable operation in industrial and consumer environments.

Replacement Considerations

Direct substitutes within the same package and pinout include other ATTINY416 variants with different packaging suffixes, such as ATTINY416-MN for tray packaging. Cross-series migration to ATTINY816 provides increased memory while maintaining pin compatibility.