ATTINY84-20SSU

Overview

The ATtiny84-20SSU 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 two PWM-capable timers, a 10-bit ADC with differential channels, an analog comparator, and a universal serial interface. It utilizes a 14-pin SOIC package and supports industrial temperature ranges.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle
• In-system programmable non-volatile memory for Flash and EEPROM
• Integrated 10-bit ADC with programmable gain and differential inputs
• On-chip debug system and multiple low-power sleep modes

Applications

• Battery-powered sensor nodes
• Industrial control systems
• Smart metering applications
• General-purpose I/O expansion

Procurement Notes

Verify the specific ordering code against the manufacturer's current documentation to ensure compatibility with required speed grades and voltage ranges. Confirm that the 14-lead SOIC package dimensions align with the target PCB footprint. Check for any applicable RoHS compliance certifications and lead-free status requirements before finalizing procurement.

Selection Notes

Select this component when 8K program memory and 12 general-purpose I/O lines are required within a compact 14-pin form factor. Ensure the application environment stays within the specified 2.7V to 5.5V operating voltage and -40°C to +85°C temperature range. Consider the 20 MHz maximum speed grade if higher processing throughput is necessary compared to lower-speed variants.

Part Context

This part belongs to the ATtiny24/44/84 family of high-performance, low-power 8-bit AVR microcontrollers. It shares the same core architecture and peripheral set as the ATtiny24 and ATtiny44, differing primarily in memory capacity. The family is designed for cost-sensitive embedded applications requiring efficient code execution and flexible I/O configurations.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the ATtiny44-20SSU and ATtiny24-20SSU, provided memory size adjustments are acceptable. Verify electrical characteristics and memory endurance specifications when cross-referencing with other manufacturers' similar 8-bit AVR devices.