ATMEGA328P

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ATMEGA328P

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Specifications

Brand Microchip Technology
Product Type 8-bit Microcontrollers - MCU
Subcategory Microcontrollers - MCU
Minimum Operating Temperature - 40 C
Core AVR
Program Memory Size 32 kB
Data RAM Size 2 kB
Maximum Clock Frequency 20 MHz
ADC Resolution 10 bit
Number of I/Os 23 I/O
Supply Voltage - Min 1.8 V
Supply Voltage - Max 5.5 V
Data Bus Width 8 bit
Series ATmega328P
Interface Type I2C, SPI, USART
Number of Timers/Counters 3 Timer
Program Memory Type Flash
Data RAM Type SRAM
Product MCUs
Data ROM Size 1 kB
Data ROM Type EEPROM
Processor Series megaAVR
Tradename AVR

Overview

Description

The ATmega328P is an 8-bit microcontroller from Microchip Technology, widely used in embedded systems, notably in Arduino boards like the Arduino Uno. It features 32KB of flash memory for program storage, 2KB of SRAM, and 1KB of EEPROM for non-volatile data storage. The microcontroller operates at a clock speed of up to 20 MHz and includes 23 general-purpose I/O pins, 6 PWM channels, and 6 ADC channels for analog input.
Key features include a built-in USART for serial communication, SPI and I2C interfaces, and various timers for precise timing tasks. It supports low-power modes, making it suitable for battery-powered applications. The ATmega328P is programmed using the Arduino IDE, which simplifies the coding process through a user-friendly environment and a vast library ecosystem. Its versatility and ease of use make it popular among hobbyists and professionals for projects ranging from simple sensors to complex robotics.

Features

The ATmega328P is a popular 8-bit microcontroller from Atmel (now part of Microchip Technology) widely used in Arduino boards. Key features include:
- Architecture: AVR 8-bit RISC architecture with a 32 general-purpose registers.
- Clock Speed: Operates up to 20 MHz.
- Memory: 32 KB flash memory (with 0.5 KB used for the bootloader), 2 KB SRAM, and 1 KB EEPROM.
- I/O Ports: 23 programmable I/O lines.
- Timers: Three timers (two 8-bit and one 16-bit) for various timing applications.
- ADC: 10-bit Analog-to-Digital Converter with 6 input channels.
- Communication: Supports USART, SPI, and I2C interfaces for serial communication.
- Low Power: Multiple power-saving modes for energy-efficient applications.
- Interrupts: external and internal interrupts for responsive operation.
- Operating Voltage: Typically operates at 1.8V to 5.5V.
These features make the ATmega328P versatile for various embedded systems and hobbyist projects.

Package

The ATmega328P microcontroller is commonly available in various package types, including 28-pin DIP (Dual In-line Package), 32-pin TQFP (Thin Quad Flat Package), and 32-pin QFN (Quad Flat No-lead). The DIP package is popular for prototyping, while TQFP and QFN are suited for compact designs in surface-mount applications.

Pinout

The ATmega328P microcontroller has a total of 28 pins in its 28-pin DIP (Dual In-line Package) configuration. Here’s a brief overview of its pin functions:
1. Power Supply:
- VCC (Pin 7): Supply voltage.
- GND (Pin 8, 22): Ground.
2. Analog Inputs:
- ADC0 to ADC5 (Pins 23-28): Used for analog-to-digital conversion.
3. Digital I/O:
- PORTD (Pins 2-7): Digital I/O pins (PD0 to PD5).
- PORTB (Pins 1-5): Digital I/O pins (PB0 to PB4).
- PORTC (Pin 23-27): Digital I/O (PC0 to PC5), also serves as ADC inputs.
4. Communication Interfaces:
- RXD (Pin 0): USART Receive.
- TXD (Pin 1): USART Transmit.
- SCL (Pin 5): I2C Clock.
- SDA (Pin 4): I2C Data.
5. Reset:
- RESET (Pin 1): Reset pin.
6. Other Functions:
- XTAL1 and XTAL2 (Pins 9, 10): Oscillator connections.
This versatile configuration allows the ATmega328P to be used in a variety of applications.

Manufacturer

The ATmega328P is manufactured by Microchip Technology Inc., a semiconductor company headquartered in Chandler, Arizona, USA. Microchip specializes in producing microcontrollers, microprocessors, and a wide range of analog and interface products. The ATmega328P is particularly well-known as the microcontroller used in Arduino boards, making it popular in the maker and DIY electronics communities. Microchip Technology's products are utilized in various applications, including industrial, automotive, consumer, and IoT (Internet of Things) solutions. The company is recognized for its commitment to innovation and providing comprehensive development tools and support for its products.

Application

The ATmega328P is widely used in various applications, including:
1. Embedded Systems: Microcontrollers in robotics and automation.
2. Consumer Electronics: Toys, appliances, and gadgets.
3. IoT Devices: Wireless sensors and smart home systems.
4. Wearable Technology: Fitness trackers and health monitors.
5. Prototyping: Arduino boards for rapid development.
6. Educational Projects: Teaching programming and electronics.
7. Data Acquisition: Collecting and processing sensor data.
8. Control Systems: Motor control and process automation.

Equivalent

Equivalent products to the ATmega328P include the ATmega168, ATmega8, and ATmega328PB. These microcontrollers share similar architectures and functionalities, with variations in memory size and peripheral features. Additionally, the PIC16F877A and STM32F030 series can be considered alternatives, though they use different architectures (PIC and ARM respectively).

Shipping

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Shipping Fee Reference (DHL/FedEx):

DHL: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 2-5 business days.

FedEx: Shipping cost ranges from $25-$40 (0.5kg), with an estimated delivery time of 3-7 business days.

UPS: Shipping cost ranges from $25-$45 (0.5kg), with an estimated delivery time of 3-7 business days.

TNT: Shipping cost ranges from $25-$65 (0.5kg), with an estimated delivery time of 3-7 business days.

EMS: Shipping cost ranges from $30-$50 (0.5kg), with an estimated delivery time of 7-15 business days.

Registered Air Mail: Shipping cost is $2-$4 (0.1kg), with an estimated delivery time of 5-20 business days.

Payments

Payment Methods

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3. Wire Transfer

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