Introduction to Atmega328p Microcontroller

Hi readers I hope you all are enjoying your life. In today’s post, we will look at Introduction to Atmega328p Microcontroller. This category of the microcontroller is a high-speed and less power-consuming module. This MCU is eight bits based on AVR (Audio/Video Receiver) and RISC (Reduced-instruction-set Computing).

Due to usage in boards, it is a commonly used ACR microcontroller. In today’s post, we will have a detailed look at its working, application, operation, and some related factors. So let’s get started with an Introduction to the Atmega328p Microcontroller.

Introduction to Atmega328p Microcontroller

• The Atmega328P is a highly reliable microchip eight-bit AVR controller. It comprises of thirty-two-kilo bytes flash memory with read and write features.

• These modules also comprise one thousand twenty-four byte EEPROM  (electrically erasable programmable read-only memory), two-kilobyte static random access memory, and twenty-three inputs, and outputs lines.
• It also has thirty-two registers, 3 flexible timers, inner and exterior interrupts, series of programmable USART.
• With all these, it has Two-wire series interfacing through which data is transmitted in bytes, SPI port, six-channel ten-bit analog to digital converters, and has 5 power-saving modes.
• Its operating voltage is 1.8 volts to 5.5 volts.
• With the use of a single clock cycle, this module gets throughputs reaching one MIPS in one megahertz.

Features of Atmega328p

• The most common features of Atmega328p are described here in detail.
• This module has an eight-bit AVR central processing unit.
• There are twenty-eight pinout exits in this module.
• The voltage over which this module operates is plus 1.8 Volts to +5.5 volts.
• There are twenty-three programmable inputs outputs pinouts are exits in this module
• The main communication interfacing in this module is master-slave SPI series interfacing which performs through the 17, 18 19 pinouts. To program MCU programmable USART is exited at 2, and 3 pinouts. For connection of external devices, 2 wire interfacing through pinouts 27 and 28 is done.
• The analog-to-digital converter of six-channel and ten-bit resolution is used,
• it has an analog comparator at pinouts 12 and 13.
• There is a six-pulse width modulation channel it has.
• There are three external oscillators it has first had frequency value from zero to four megahertz and an operating voltage of 1.8 volts to 5.5 volts second has zero to ten-hertz frequency and 2.7 volts to 5.5 volts operating voltage and the third has a frequency of zero to twenty megahertz and operating voltage of 4.5 volts to 5.5 volts.
  • 0-4MHz  1.8V to 5.5V
  • 0-10MHz 2.7V to 5.5V
  • 0-20MHz  4.5V to 5.5V
• It has an inner oscillator of eight mage hertz.

• It has programmable flash memory which is 32 kilobytes.
• Its central processing unit speed is one Million Instructions Per Second for one megahertz.
• It has two kilobytes of inner static RAM.
• It has one kilobyte  EEPROM
• Its operating temperature is minus forty to plus one zero five centigrade.

PINOUT of Atmega328p

• There are twenty-eight pinout exits in Atmega328p which are discussed here in detail.

PC6

• It is six pinouts of port C. It is reset pinout and can be used as input and output when RSTDISBL gets programming,

PD0

• It is zero pinouts of port D. It is the input data transmission pinout for USART and the series communication interface.

PD1

• It is the first pinout of port D. it used as output for SART.

PD2

• it is two pinouts of port D.And used as exterior interrupt zero.

PD3

• It is the third pinout of port D.

PD4

• it is the fourth pinout of Port D.

VCC

• This pinout is linked with the positive voltage.

GND

• It is linked to the ground terminal.

PB6

• it is six pinouts of port B and used to get exterior clock input.

PB7

• It is seven pinouts of port B and operates as a chip clock oscillator pin.

PD5

• It is the fifth pinout of port D and here the external clock counter is connected.

PD6

• It is six pinouts of port D.

PD7

• it is the seventh pinout of port D.

PB0

• It is zero pinouts of port B.

PB1

• it is the first pinout of port B,

PB2

• It is the second pinout of port B and is low when MCU operating as a slave.

PB3

• It is third pinout of port B when MCU is operating as slave data can be received through this pinout.

PB4

• This pin is used to send data from the controller when it operating as a slave.

PB5

• This pinout is used to transfer of data between the MCU and external devices linked with the controller.

AVCC

• it is a power pinout for an external analog-to-digital converter.

AREF

• It is an analog reference pinout for analog to digital converter.

GND

• It is ground pinout.

PC0

• It is zero pinouts of port c.

PC1

• First pinout of port C.

PC2

• Second pinout of port C.

PC3

• The third pinout of port C.

PC4

• Further pinout of port c.

PC5

• It is the fifth pinout of port C.

Where to Use ATMEGA328P

• 32 Kbytes ATMEGA328P projects use this module
• It is used for power-saving modes and operates on MOBILE EMBEDDED SYSTEMS.
• Its watchdog timer to reset features helps to use for systems where human help is less needed
• The RISC-based architecture helps to implement programs fastly
• It is also used where high temperature involved base don chip temperature sensors

Applications of Atmega328p

• These are some applications of Atmega328p which are mentioned here.
• Atmega328p is used in different types of Arduino such as Arduino Uno, Arduino Nano, and Arduino Micro.
• It uses different types of control systems used in industries.
• It is also employed in the power regulation system.
• It is used in the digital processing of data.
• It is used in the control of motor speed.

 ATMega328P with Arduino

ATmega328P is used in Arduino uno and Arduino nano boards and we can replace Arduino with an ATmega328 chip. First time installing the Arduino bootloader on the chip. IC with bootloader replaced with Arduino UNO board and feed program in it. When the Arduino program is added IC can removed and used as a replacement of the Arduino board.

Here you can see the pin configuration between Arduino Uno and the ATmega328P chip.

 

Atmega368P vs STM32 vs MSP430

Features	ATmega328P	STM32	MSP430
Type	MicroChip	Cortex	Texas Instruments
Prices	Low	High	Low
Architecture	RISC architecture	Power Architecture designed for embedded Systems	von-Neumann architecture
Power Use	Low,	Medium	Low
Performance	Medium	High, fast processing speed,	Low, used for simple projects
Usage	Easy to use, 8-bit, and highly supported Arduino boards	32-bit microcontroller makes it complicated	Complex then to Arduino boards

AtMega328P vs AtMega328

• They come with the same design
• ATmega328P uses lower power than other module
• ATmega328P is costly
• TQFP package comes in 328P

ATMEGA328P  Alternatives

• ATMEGA16
• ATMEGA32
• ATMEGA8535

ATmega328P vsd Arduino Uno

• ATmega328P  is a low-cost module easy to get and best to use for low-cost projects. The Arduino UNO is known as the economic development board.
• ATmega328P is user user-friendly module and is best to use for DIY projects.
• ATmega328P chip can work distinctly also with microcontroller boards such as Arduino Uno.

Faqs

So friends that are detailed post about Atmega328p if you have any further query ask in comments. Thanks for reading. Have a good day,