{"id":25448,"date":"2019-10-22T15:52:31","date_gmt":"2019-10-22T07:52:31","guid":{"rendered":"\/blog\/?p=25448"},"modified":"2019-11-13T15:19:22","modified_gmt":"2019-11-13T07:19:22","slug":"atmega328p-the-one-microcontroller-you-should-start-with","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2019\/10\/22\/atmega328p-the-one-microcontroller-you-should-start-with\/","title":{"rendered":"ATmega328P, the one microcontroller you should start with"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img fetchpriority=\"high\" decoding=\"async\" width=\"774\" height=\"272\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/cover-page-1.png\" alt=\"\" class=\"wp-image-25470\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/cover-page-1.png 774w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/cover-page-1-300x105.png 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/cover-page-1-768x270.png 768w\" sizes=\"(max-width: 774px) 100vw, 774px\" \/><\/figure>\n\n\n\n<p>Nowadays, with Microcontrollers being relatively cheap and readily available in the market, making a purchase decision on a suitable one to pick might a hard task to handle. However, there\u2019s one particular model that\u2019s good to start with for users. That model is the ATmega328p, an 8-bit AVR microcontroller. <\/p>\n\n\n\n<p>This article will provide insights as to why the ATmega328p is the one for you.<\/p>\n\n\n\n<p><strong>It\u2019ll cover the following components:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>What is ATmega328P?<\/li><li>Product Features and Parametrics<\/li><li>Comparisons between fellow competitors: STM32 and MSP430<\/li><li>Product Recommendations<\/li><li>Summary<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is ATmega328P?<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/atmega328p-1.png\" alt=\"\" class=\"wp-image-25450\" width=\"204\" height=\"181\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/atmega328p-1.png 343w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/atmega328p-1-300x267.png 300w\" sizes=\"(max-width: 204px) 100vw, 204px\" \/><figcaption>Ref: <a href=\"https:\/\/www.microchip.com\/_images\/ics\/medium-ATmega328P-TQFP-32.png\">ATmega328P<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<p>ATmega328P is a high performance yet low power consumption 8-bit AVR microcontroller that\u2019s able to achieve the most single clock cycle execution of 131 powerful instructions thanks to its advanced RISC architecture. It can commonly be found as a processor in Arduino boards such as Arduino Fio and Arduino Uno.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Features and Parametrics<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Features:<\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">High endurance non-volatile memory segments<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>In system self-programmable flash program memory<\/li><li>Programming Lock for software security<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Peripheral features<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Two 8-bit Timer\/Counter with separate prescaler, compare mode.<\/li><li>One 16-bit Timer\/Counter with separate prescaler, compare mode, and capture mode<\/li><li>Temperature measurement <\/li><li>Programmable serial USART and watchdog timer with separate on-chip oscillator<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Unique features compared to other microcontrollers (ARM, 8051, PIC):<\/strong><strong><\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Power-on reset and programmable brown-out detection<\/li><li>Internal calibrated oscillator<\/li><li>External and Internal interrupt sources<\/li><li>Six sleep modes: Idle, ADC noise reduction, power-save, power-down, standby, and extended standby<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\" style=\"text-align:center\"><strong>Parametrics<\/strong><\/h4>\n\n\n\n<table class=\"wp-block-table aligncenter\"><tbody><tr><td><strong>Program Memory Type<\/strong><strong><\/strong><\/td><td>Flash<\/td><\/tr><tr><td><strong>Program Memory Size<\/strong><strong><\/strong><\/td><td>32<\/td><\/tr><tr><td><strong>CPU Speed (MIPS\/DMIPS)<\/strong><strong><\/strong><\/td><td>20<\/td><\/tr><tr><td><strong>SRAM (KB)<\/strong><strong><\/strong><\/td><td>2,048<\/td><\/tr><tr><td><strong>Data EEPROM\/HEF (bytes)<\/strong><strong><\/strong><\/td><td>1,024<\/td><\/tr><tr><td><strong>Digital Communication Peripheral <\/strong><strong><\/strong><\/td><td>1-UART, 2-SPI, 1-I2C<\/td><\/tr><tr><td><strong>Capture\/Compare\/PWM Peripheral <\/strong><strong><\/strong><\/td><td>1 Input Capture, 1 CCP, 6PWM<\/td><\/tr><tr><td><strong>Timers\/Counters<\/strong><strong><\/strong><\/td><td>2 x 8-bit, 1x 16 bit<\/td><\/tr><tr><td><strong>Number of Comparators<\/strong><strong><\/strong><\/td><td>1<\/td><\/tr><tr><td><strong>Temperature Range <\/strong><strong><\/strong><\/td><td>-40 to 85deg<\/td><\/tr><tr><td><strong>Operating Voltage Range (V)<\/strong><strong><\/strong><\/td><td>1.8 to 5.5V<\/td><\/tr><tr><td><strong>Pin Count<\/strong><strong><\/strong><\/td><td>32<\/td><\/tr><tr><td><strong>Low Power<\/strong><strong><\/strong><\/td><td>Yes<\/td><\/tr><\/tbody><\/table>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Advantages and Disadvantages:<\/strong><strong><\/strong><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Advantages:<\/strong><strong><\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Processors are simpler to use, with the usage of 8bit and 16bit instead of 32\/64bit which are more complex<\/li><li>Readily usable without additional computing components with 32k bytes of onboard self-programmable flash program memory as well as 23 programmable I\/O lines<\/li><li>Code Efficient, all 31 registers are directly connected to the arithmetic logic unit (ALU), making it 10 times faster than conventional CISC microcontrollers<\/li><li>Optimized for AVR enhanced RISC instruction set<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>Disadvantages:<\/strong><strong><\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Lacks performance compared to higher bit microcontrollers <\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Product Applications <\/h2>\n\n\n\n<p>The ATmega328P is supported with a full suite of program and system development tools which includes: C compilers, macro assemblers, program debugger\/simulators, in-circuit emulators, and evaluation kits. <\/p>\n\n\n\n<p>The fast PWM mode that provides a high-frequency PWM waveform generation allows for it to be suited for power regulation, rectification, and DAC applications. <\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Product Comparisons<\/strong><strong><\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Which is better? Atmega368P vs STM32 vs MSP430<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/combined-3.png\" alt=\"\" class=\"wp-image-25467\" width=\"321\" height=\"89\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/combined-3.png 428w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/combined-3-300x83.png 300w\" sizes=\"(max-width: 321px) 100vw, 321px\" \/><figcaption>Ref: <a href=\"https:\/\/www.microchip.com\/_images\/ics\/medium-ATmega328P-TQFP-32.png\">ATmega328P<\/a> <a href=\"https:\/\/cn.element14.com\/productimages\/standard\/zh_CN\/GE64LQFP_STM32-40.jpg\">STM32&nbsp;<\/a><a href=\"https:\/\/cfnewsads.thomasnet.com\/images\/medium\/40000\/40000178.jpg\">MSP430<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<table>\n  <tr>\n    <th><\/th>\n    <th>ATmega328P<\/th>\n    <th>STM32<\/th>\n    <th>MSP430<\/th>\n  <\/tr>\n  <tr>\n    <td>Brand<\/td>\n    <td>MicroChip<\/td>\n    <td>Cortex<\/td>\n    <td>Texas Instruments<\/td>\n  <\/tr>\n  <tr>\n    <td>Cost <\/td>\n    <td>Low<\/td>\n    <td>High<\/td>\n    <td>Low<\/td>\n  <\/tr>\n  <tr>\n    <td>Architecture<\/td>\n    <td>Advanced RISC architecture<\/td>\n    <td>Power Architecture technology designed for embedded applciations<\/td>\n    <td>Older, von-Neumann architecture<\/td>\n  <\/tr>\n  <tr>\n    <td>Power Consumption<\/td>\n    <td>Low, more efficient power consumption<\/td>\n    <td>Medium, higher clock speed may result in higher consumption power<\/td>\n    <td>Low<\/td>\n  <\/tr>\n  <tr>\n    <td>Performance<\/td>\n    <td>Medium, lower bit but suitable for complex projects<\/td>\n    <td>High, fast processing speed, packs more power. <br>Running 32 bit ARM processor core with sufficient RAM<\/td>\n    <td>Low, more suitable for only simple projects<\/td>\n  <\/tr>\n  <tr>\n    <td>Ease of Usage<\/td>\n    <td>Easy to use, 8 bit and high compatibility with Arduino boards<\/td>\n    <td>Complicated due to its nature of being a 32 bit microcontroller<\/td>\n    <td>Complex relative to Arduino boards<\/td>\n  <\/tr>\n<\/table>\n\n\n\n<p style=\"color:#000000\" class=\"has-text-color\"><strong>Verdict: Atmega368P. Though it lacks performance as compared to the STM32, its lower relative low cost and features packed makes it a value for money option that one should consider.<\/strong><strong><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">AtMega328P vs AtMega328<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/combined-2.png\" alt=\"\" class=\"wp-image-25471\" width=\"275\" height=\"109\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/combined-2.png 366w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/combined-2-300x119.png 300w\" sizes=\"(max-width: 275px) 100vw, 275px\" \/><figcaption>Ref: <a href=\"https:\/\/www.microchip.com\/_images\/ics\/medium-ATmega328-TQFP-32.png\">Atmega328<\/a><a href=\"https:\/\/www.microchip.com\/_images\/ics\/medium-ATmega328P-TQFP-32.png\">Atmega328P<\/a><\/figcaption><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Both share similar architectural design <\/li><li>ATmega328P consumes lesser power <\/li><li>ATmega328P slightly pricier<\/li><li>TQFP package is only available in the 328P version<\/li><\/ul>\n\n\n\n<p style=\"color:#000000\" class=\"has-text-color\"><strong>Verdict: Though 328P is slightly pricier than its previous successor, it\u2019s able to save you couple microamps of power. In addition, the TQFP package variant of the chip is only available in the 328P. <\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Product Recommendations<\/strong><\/h2>\n\n\n\n<p><strong><a href=\"https:\/\/www.seeedstudio.com\/Seeeduino-V4-2-p-2517.html?utm_source=blog&amp;utm_medium=blog\">Seeeduino V4.2: Value for Money Option<\/a><\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/seeeduino.png\" alt=\"\" class=\"wp-image-25457\" width=\"248\" height=\"199\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/seeeduino.png 331w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/seeeduino-300x240.png 300w\" sizes=\"(max-width: 248px) 100vw, 248px\" \/><figcaption> <br><\/figcaption><\/figure><\/div>\n\n\n\n<p>For only the price of $6.90, you\u2019ll be able to get an Arduino UNO-R3 shield fully compatible board that uses ATmega328P microcontroller.<\/p>\n\n\n\n<p style=\"color:#080808\" class=\"has-text-color\"><strong>Product Features include:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li> 14 Digital I\/O Pins (6 PWM outputs)<\/li><li> 6 Analog Inputs<\/li><li> Micro USB programming and power supply <\/li><li> ISP Header<\/li><li> 3 on-board Grove connectors for better prototyping<\/li><li> 3.3\/5V system operation power switch<\/li><\/ul>\n\n\n\n<p><strong>Pros:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Relatively cheap and suitable for beginners <\/li><li>Usage of micro USB to power and program the board for ease of usage<\/li><li><\/li><\/ul>\n\n\n\n<p><strong><a href=\"https:\/\/www.seeedstudio.com\/Seeeduino-Lotus-V1-1-ATMega328-Board-with-Grove-Interface.html?utm_source=blog&amp;utm_medium=blog\">Seeeduino Lotus V1.1: Cost-effective\u00a0board\u00a0that&#8217;s\u00a0compatible\u00a0with\u00a0your\u00a0Mac\u00a0Os<\/a><\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/lotus.png\" alt=\"\" class=\"wp-image-25481\" width=\"269\" height=\"227\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/lotus.png 358w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2019\/10\/lotus-300x253.png 300w\" sizes=\"(max-width: 269px) 100vw, 269px\" \/><\/figure><\/div>\n\n\n\n<p><strong>Features<\/strong><br><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Combination of Seeeduino and base shield.<\/li><li>Arduino UNO Compatible, uses the same chip (ATmega328P)<\/li><li>On-board Grove connector<\/li><li>Mac OS compatible.<\/li><li>Cost-effective<\/li><\/ul>\n\n\n\n<p><strong><a href=\"https:\/\/www.seeedstudio.com\/Seeeduino-Nano-p-4111.html?utm_source=blog&amp;utm_medium=blog\">Seeeduino Nano: The\u00a0cheaper and better\u00a0alternative\u00a0of\u00a0the\u00a0Adruino\u00a0Nano<\/a><\/strong><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.seeedstudio.com\/wp-content\/uploads\/2019\/10\/seeeduino-nano.png\" alt=\"\" class=\"wp-image-25483\" width=\"269\" height=\"227\"\/><\/figure><\/div>\n\n\n\n<p>The Seeeduino Nano packs USB Type-C instead of the typical mini USB that Adruino Nano uses. Furthermore, the added grove connectors allow for hundreds of sensors and actuators being played through simply plugging. <\/p>\n\n\n\n<p><strong>Features&nbsp;<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>43mm*18mm Tiny board<\/li><li>16M&nbsp;ATmega328P<\/li><li>Fully compatible with Arduino Nano<\/li><li>USB Type C for Programming and power<\/li><li>On-board Grove I2C connector<\/li><li>Breadboard-friendly<\/li><\/ul>\n\n\n\n<p><strong>Main differences between Seeeduino Nano and Arduino Nano: <\/strong><\/p>\n\n\n\n<table>\n  <tr>\n    <th><\/th>\n    <th>Seeeduino Nano<\/th>\n    <th>Arduino Nano<\/th>\n  <\/tr>\n  <tr>\n    <td>Processor<\/td>\n    <td>ATmega328P<\/td>\n    <td>ATmega328P<\/td>\n  <\/tr>\n  <tr>\n    <td>Input Voltage<\/td>\n    <td>5V \/ 7-12V<\/td>\n    <td>5V \/ 7-12V<\/td>\n  <\/tr>\n  <tr>\n    <td>IO Voltage<\/td>\n    <td>5V<\/td>\n    <td>5V<\/td>\n  <\/tr>\n  <tr>\n    <td>Analog In\/Out<\/td>\n    <td>8\/0<\/td>\n    <td>8\/0<\/td>\n  <\/tr>\n  <tr>\n    <td>Digital IO\/PWM<\/td>\n    <td>14\/6<\/td>\n    <td>14\/6<\/td>\n  <\/tr>\n  <tr>\n    <td>USB<\/td>\n    <td>Type-C<\/td>\n    <td>Mini-USB<\/td>\n  <\/tr>\n  <tr>\n    <td>Grove Connectors<\/td>\n    <td>1xI2C<\/td>\n    <td>No Grove Connectors<\/td>\n  <\/tr>\n<\/table>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Summary<\/strong><\/h2>\n\n\n\n<p style=\"color:#000000\" class=\"has-text-color\">With the seemingly popularity of Arduino boards and its compatibility with ATmega368p, it stands out among the pack as the one to start with for your project. The relative features and low cost makes the ATmega368P a value for money option. However, if performance is placed high among your list, the STM32 model would be the one for you. <\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nowadays, with Microcontrollers being relatively cheap and readily available in the market, making a 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