ATTINY84A-MFR

Overview

The ATTINY84A-MFR is an 8-bit AVR microcontroller featuring 8 KB of in-system programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates at a maximum clock frequency of 20 MHz with a supply voltage range of 1.8 V to 5.5 V. The device includes twelve general-purpose I/O lines, a 10-bit ADC with eight single-ended channels, and two timer/counters supporting PWM. It utilizes a 20-pin QFN/MLF package (20M1) and supports industrial temperature ranges up to +125°C.

Feature Summary

• High-performance 8-bit AVR architecture with advanced RISC instruction set for efficient processing
• Non-volatile memory segments including self-programmable Flash and EEPROM with high endurance ratings
• Integrated analog peripherals such as a 10-bit ADC with programmable gain and an on-chip analog comparator
• Comprehensive power management with multiple software-selectable sleep modes and low active current consumption

Applications

• Industrial control systems requiring robust operation across extended temperature ranges
• Battery-powered devices utilizing low-power consumption modes and wide voltage input capabilities
• Sensor interface applications leveraging the integrated 10-bit ADC and analog comparator
• General-purpose embedded logic replacement using in-system programmable Flash via SPI

Procurement Notes

Verify the specific ordering suffix 'MFR' corresponds to the required 20-pin QFN/MLF package and industrial temperature grade. Confirm that the matte tin lead finish meets your assembly process requirements. Ensure compatibility with the specified speed grade relative to the operating voltage. Cross-reference the datasheet revision to validate electrical characteristics against your design specifications.

Selection Notes

Select this component when 8 KB of program memory and 512 bytes of data storage are sufficient for the application. Choose this part over lower-density variants if additional I/O or memory capacity is needed. Consider the 20-pin QFN package for space-constrained designs requiring surface-mount technology. Verify that the 20 MHz speed grade aligns with the system's timing requirements and available clock sources.

Part Context

This device belongs to the ATtiny24A/44A/84A family of 8-bit AVR microcontrollers manufactured by Microchip Technology. The family shares a common core architecture and peripheral set, differentiated primarily by memory sizes and package options. The ATTINY84A variant provides the highest memory capacity within this specific series, offering 8 KB of Flash and 512 bytes each of EEPROM and SRAM.

Replacement Considerations

ATtiny84A-MMHR