ATTINY84-20MUR

Overview

The ATTINY84-20MUR is an 8-bit AVR microcontroller featuring 8K bytes of in-system programmable Flash, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates at speeds up to 20 MHz with a supply voltage range of 2.7V to 5.5V. The device includes a 10-bit ADC with 8 single-ended channels, two timer/counters with PWM capabilities, and an analog comparator. It utilizes a 20-pad QFN/MLF package (20M1) and supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle
• In-system programmable non-volatile memory for Flash, EEPROM, and SRAM
• Integrated 10-bit analog-to-digital converter with differential channel support
• Multiple power-saving modes including idle, ADC noise reduction, and power-down

Applications

• Battery-powered embedded systems requiring low power consumption
• Industrial control applications operating within extended temperature ranges
• Sensor interface circuits utilizing the on-chip ADC and analog comparator
• General-purpose I/O expansion using pin change interrupts

Procurement Notes

Verify the specific ordering code matches the required speed grade and voltage range. Confirm the package type corresponds to the 20-pad QFN/MLF designation. Ensure the component meets RoHS compliance requirements for the intended application environment. Check for any relevant errata regarding EEPROM access at lower clock frequencies.

Selection Notes

Select this model when 8K Flash capacity is necessary for complex firmware logic. Choose the 20-pin variant if additional I/O lines or differential ADC inputs are required compared to smaller packages. Consider the 20MUR suffix for automated surface-mount assembly processes. Evaluate power consumption specifications against system battery life requirements.

Part Context

This component belongs to the ATtiny24/44/84 family of 8-bit AVR microcontrollers. It shares the same core architecture and peripheral set as the ATtiny24 and ATtiny44, differing primarily in memory sizes. The family is designed for cost-sensitive applications requiring high performance per watt.

Replacement Considerations

ATtiny84-20MU serves as a direct pin-compatible alternative in the same package without tape and reel packaging.