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ATMEGA1284-PU

MCHPATMEGA1284-PU

Microchip Technology
AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 128KB (64K x 16) FLASH 40-PDIP
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Overview

The ATMEGA1284-PU is a high-performance 8-bit AVR RISC-based microcontroller featuring 128KB of ISP flash memory and 16KB of SRAM. This specific variant is housed in a 40-pin PDIP package, making it one of the most powerful AVR microcontrollers available for through-hole applications and prototyping. It operates at speeds up to 20MHz and includes an on-chip 2-cycle multiplier and a 4KB EEPROM.

Why Choose This Part

This MCU offers a rare combination of 16KB SRAM in a through-hole PDIP package, which is significantly higher than the standard ATmega328P. It provides 131 powerful instructions, most of which execute in a single clock cycle, enabling efficient processing at its 20MHz maximum frequency.

Applications

Rapid Breadboard Prototyping
The 40-pin DIP package allows engineers to test complex firmware requiring large RAM and Flash footprints directly on a solderless breadboard without surface-mount adapters.
Industrial Control Systems
Utilizes 32 I/O lines and integrated peripherals like PWM and a Watchdog Timer for managing machinery and monitoring sensors.
Legacy Equipment Maintenance
Serves as a high-memory drop-in upgrade or replacement for older through-hole 8-bit systems requiring larger data buffers.

Key Specifications

Speed 20MHz
RAM Size 16K x 8
Core Size 8-Bit
EEPROM Size 4K x 8
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity I2C, SPI, UART/USART
Mounting Type Through Hole
Number of I/O 32
Core Processor AVR
Package / Case 40-DIP (0.600", 15.24mm)
Data Converters A/D 8x10b
Oscillator Type Internal
Program Memory Size 128KB (64K x 16)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 40-PDIP
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

Develop for the ATMEGA1284-PU using the Microchip Studio IDE (formerly Atmel Studio) or the AVR-GCC toolchain. Hardware programming and debugging can be performed via the SPI or JTAG interfaces using tools like the MPLAB PICkit 4 or Atmel-ICE. For Arduino enthusiasts, the 'MightyCore' third-party hardware package provides full support for this chip within the Arduino IDE.

Also Consider

ATMEGA1284P-AU MCHPMicrochip Technology - The TQFP surface-mount version of the same silicon for production PCB designs.
ATMEGA2560-16AU MCHPMicrochip Technology - Offers double the flash memory and more I/O pins, though it is only available in surface-mount packages.

Categories

Microcontrollers
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