ATTINY84-20SSUR

Overview

The ATtiny84-20SSUR 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 at a maximum clock frequency of 20 MHz with a supply voltage range of 2.7 V to 5.5 V. The device includes twelve programmable I/O lines, an 8-channel 10-bit ADC with differential inputs, two timer/counters, and an analog comparator. It is housed in a 14-lead SOIC package.

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 channel pairs
• Multiple software-selectable low-power sleep modes

Applications

• Low power consumer electronics
• Battery operated devices
• Simple sensor interfaces
• Basic control systems

Procurement Notes

Verify the ordering suffix 'R' indicates tape and reel packaging as per official documentation. Confirm the speed grade '20' corresponds to the 2.7V to 5.5V operating range. Ensure the package type matches the required 14-lead SOIC form factor for your design.

Selection Notes

Select this component when 8 KB of program memory and 512 bytes of data storage are sufficient. Choose the 20 MHz speed grade if operation within the 2.7V to 5.5V voltage range is required. Verify that the 14-pin SOIC package fits the available PCB space.

Part Context

This part 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 capacity. The family is designed for cost-sensitive applications requiring moderate processing power.

Replacement Considerations

ATtiny84-20SSU is the tube version of the same device. ATtiny84V-20SSUR offers the same functionality but supports a lower voltage range of 1.8V to 5.5V.