ATTINY84-20MU

Overview

The ATTINY84-20MU is an 8-bit AVR microcontroller featuring 8 KB of in-system programmable Flash memory, 512 bytes of EEPROM, and 512 bytes of SRAM. It operates with a maximum clock frequency of 20 MHz and supports a supply voltage range of 1.8 V to 5.5 V. The device includes an 8-channel 10-bit ADC, multiple timer/counters, and communication interfaces such as SPI and USI. Packaged in a 20-pin MLF (Micro Lead Frame) format, it is designed for low-power applications requiring efficient code execution.

Feature Summary

• Advanced RISC architecture enabling near 1 MIPS per MHz throughput
• Non-volatile memory with high endurance specifications
• Integrated analog-to-digital converter with differential channels
• On-chip debug system and programmable watchdog timer

Applications

• Battery-powered sensor nodes
• Simple human-machine interface controllers
• Infrared communication devices
• Low-cost embedded control systems

Procurement Notes

Verify the specific suffix 'MU' corresponds to the MLF package variant when sourcing. Confirm RoHS compliance status through official Microchip documentation. Ensure programming tools support the AVR architecture and SPI-based ISP protocols. Check for end-of-life notices or recommended new design alternatives if applicable.

Selection Notes

Select this component for projects requiring moderate program storage with limited pin count. Consider the 1.8 V minimum operating voltage for battery efficiency. Evaluate peripheral needs against the available timers and ADC channels. Compare against ATtiny84A for potential updated manufacturing revisions.

Part Context

This part belongs to the ATtiny family of 8-bit microcontrollers based on the AVR enhanced RISC architecture. It shares core features with variants like ATtiny24 and ATtiny44 but offers increased memory capacity. The MLF package provides a compact footprint suitable for space-constrained PCB designs.

Replacement Considerations

ATtiny84A-MU serves as a direct functional replacement with potential manufacturing updates.