{"id":2621,"date":"2023-04-01T01:43:55","date_gmt":"2023-04-01T01:43:55","guid":{"rendered":"https:\/\/embedwiz.com\/?p=2621"},"modified":"2023-04-07T00:01:07","modified_gmt":"2023-04-07T00:01:07","slug":"arduino-clock-speed","status":"publish","type":"post","link":"https:\/\/embedwiz.com\/arduino-clock-speed\/","title":{"rendered":"Arduino Clock Speed: A Guide To Different Board Speeds"},"content":{"rendered":"\n
Arduino clock speed<\/strong> is one of the critical factors to consider when buying this microcontroller board because it determines how fast the chip can handle instructions. <\/p>\n\n\n\n Typical Arduino boards run at 16MHz, but some have an 80MHz clock rate or higher. <\/p>\n\n\n\n We’ll look at the clock speed in Arduino and how to increase it\/make it more precise for time-sensitive applications. Read on to learn more!<\/p>\n\n\n Clock speed refers to the number of instruction cycles a CPU can process each second. So it indicates how fast a processor can run.<\/p>\n\n\n\n Measured in GHz (gigahertz) or MHz (megahertz), typical Arduino boards have crystal oscillator or ceramic resonator clock sources that provide 16MHz clock rates. <\/p>\n\n\n\n 16MHz is the equivalent of 16 million hertz, which means the microcontroller can run 16 million clock cycles each second.<\/p>\n\n\n\n An Arduino UNO board<\/em><\/p>\n\n\n In Arduino<\/a>, clock speed shows how fast the board runs instructions in the microcontroller, which also helps synchronize the operations of all the connected peripheral devices. <\/p>\n\n\n\n So generally, the higher the clock speed, the shorter the time required to run instructions\/commands.<\/p>\n\n\n\n But let’s consider the most popular Arduino board, the Arduino UNO. <\/p>\n\n\n\n The board comes with ATmega328p and ATmega16U2 microcontrollers, each with an internal clock that runs at 8MHz. <\/p>\n\n\n\n But the microcontrollers don’t use these clocks by default. Instead, they run on the faster external clock.<\/p>\n\n\n\n The ATmega328p handles logic processing and has a ceramic resonator<\/a> as its clock source. <\/p>\n\n\n\n On the other hand, ATmega16U2 handles serial UART communication between the board and PCs, and it uses a crystal oscillator<\/a> for clock control.<\/p>\n\n\n\n Crystal oscillators<\/em><\/p>\n\n\n\n According to the microcontroller datasheets, both can run at speeds of up to 20 MHz, provided they get a constant 4.5V input voltage. <\/p>\n\n\n\n So the boards have an external ceramic resonator and crystal oscillator to offer faster clock speeds than the 8MHz internal oscillator. <\/p>\n\n\n\n And it is possible to replace the external clocks with ones that run at higher clock rates or use another external 20MHz clock.<\/p>\n\n\n The primary Arduino boards include the following.<\/p>\n\n\n\nTable of Contents<\/h2>\n
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What Is Clock Speed?<\/h2>\n\n\n
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Clock Speed in Arduino<\/h3>\n\n\n
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Comparison Between Arduino Speeds<\/h2>\n\n\n