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ATMEGA1284P-PU

MCHPATMEGA1284P-PU

Microchip Technology
AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 128KB (64K x 16) FLASH 40-PDIP
Active7,117 in stock
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Overview

The ATMEGA1284P-PU is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 128KB of flash memory and an unusually large 16KB of SRAM for an 8-bit device. It is packaged in a user-friendly 40-pin PDIP, making it one of the most powerful AVR microcontrollers available for through-hole applications and prototyping.

Why Choose This Part

The primary advantage is the 16KB of internal SRAM, which is four to eight times larger than most standard 8-bit microcontrollers, enabling more complex software buffers and data processing. Its 40-PDIP form factor provides a high I/O count of 32 pins while remaining accessible for hand-soldering and educational use.

Applications

Home Automation Gateways
Leverages the 128KB flash and 16KB SRAM to manage complex communication stacks and local data logging without external memory.
Industrial Control Systems
Utilizes 32 I/O lines and integrated peripherals like PWM and USART for monitoring sensors and controlling actuators in rugged environments.
Rapid Prototyping
The 40-pin DIP package allows for direct insertion into breadboards or sockets, ideal for developing proof-of-concept hardware without custom PCBs.
Legacy System Upgrades
Provides a significant memory boost for existing 8-bit designs that have outgrown the resources of smaller chips like the ATmega328P.

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

Developers can use the Microchip Studio IDE (formerly Atmel Studio) or the MPLAB X platform with an AVR-ISP mkII or MPLAB PICkit 4 programmer. The part is also compatible with the Arduino IDE via the 'MightyCore' hardware package, allowing engineers to leverage standard libraries on a high-resource 8-bit platform.

Part of ATmega family » ATMEGA1284P

ATMEGA1284P Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Stock
ATMEGA1284P-PU (this part) DIP-40 7,117
ATMEGA1284P-AU TQFP-44 20,816
Also available as: ATMEGA1284P-MU

Also Consider

ATMEGA328P-PU MCHPMicrochip Technology - The industry-standard 28-pin DIP AVR for smaller projects that do not require the high I/O or SRAM of the 1284P.

Categories

Microcontrollers > AVR Microcontrollers > Microchip