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ATTINY84-20MU

MCHPATTINY84-20MU

Microchip Technology
AVR AVR® ATtiny Microcontroller IC 8-Bit 20MHz 8KB (4K x 16) FLASH 20-QFN-EP (4x4)
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Overview

The ATTINY84-20MU is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 8KB of Flash memory and 512 bytes of EEPROM. It operates at speeds up to 20MHz and provides 12 general-purpose I/O lines in a compact 20-QFN package. The device is designed for space-constrained applications that require efficient processing and flexible peripheral support, such as a Universal Serial Interface (USI) and a 10-bit ADC.

Why Choose This Part

The ATTINY84 offers a significant memory upgrade over the ATtiny44 while maintaining the same physical footprint. It features an on-chip debugWIRE system for simplified programming and debugging, and its internal calibrated oscillator reduces the need for external timing components.

Applications

Handheld Battery-Powered Devices
Utilizes the low-power sleep modes and wide operating voltage to extend battery life in portable electronics.
Sensor Interface Nodes
Leverages the 10-bit ADC, internal temperature sensor, and pin-change interrupts to monitor and process analog signals.
Simple Motor Control
Uses the internal PWM channels and 20MHz clock speed to manage small DC motor drivers or servo signals.
I/O Expansion
Acts as a peripheral controller to offload simple timing or I/O tasks from a primary application processor via USI.

Key Specifications

Speed 20MHz
RAM Size 512 x 8
Core Size 8-Bit
EEPROM Size 512 x 8
Peripherals Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Connectivity USI
Mounting Type Surface Mount
Number of I/O 12
Core Processor AVR
Package / Case 20-WFQFN Exposed Pad
Data Converters A/D 8x10b
Oscillator Type Internal
Program Memory Size 8KB (4K x 16)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 20-QFN-EP (4x4)
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.5V

Getting Started

Developers can program the ATTINY84-20MU using the Microchip Studio IDE or the AVR-GCC toolchain. Hardware debugging is supported via the debugWIRE interface using tools like the MPLAB PICkit 4 or Atmel-ICE. For rapid prototyping, the part can be integrated into the Arduino ecosystem using the ATTinyCore board manager package.

Also Consider

ATTINY85-20MU MCHPMicrochip Technology - Select this for an even smaller 8-pin package if fewer I/O pins are required for the design.
ATMEGA328P-MU MCHPMicrochip Technology - Offers significantly more Flash (32KB) and RAM (2KB) if the application outgrows the 8KB limit of the ATtiny.

Categories

Microcontrollers > AVR Microcontrollers > Microchip