ATTINY84-20PU

Overview

The ATtiny84-20PU 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 one 8-bit and one 16-bit Timer/Counter with two PWM channels each, a 10-bit ADC with eight single-ended channels, and twelve programmable I/O lines.

Feature Summary

• Advanced RISC architecture executing most instructions in a single clock cycle
• In-system programmable non-volatile memory for Flash and EEPROM
• Integrated analog-to-digital converter with differential channel support
• On-chip debug system and universal serial interface

Applications

• Low-power embedded control systems
• Sensor data acquisition interfaces
• Simple communication protocol implementations
• Battery-operated devices requiring extended standby modes

Procurement Notes

Verify the specific ordering code matches the required speed grade and package type. Confirm that the industrial temperature range aligns with operational requirements. Ensure compatibility with existing programming tools for ISP functionality. Check for any specific lock bit configurations needed for application security.

Selection Notes

Select this component when 8K program memory and multiple timer channels are necessary. Consider the PDIP-14 package for through-hole mounting needs. Evaluate power consumption specifications against battery life requirements. Verify that the available I/O count meets the peripheral connection demands.

Part Context

This device belongs to the ATtiny24/44/84 family of low-power CMOS 8-bit microcontrollers. It shares the same core architecture and peripheral set as its smaller variants, differing primarily in memory capacity. The family utilizes Atmel's high-density non-volatile memory technology.

Replacement Considerations

ATtiny44-20PU offers identical performance with reduced memory capacity. ATtiny84-20SSU provides the same specifications in a surface-mount SSOP-14 package.