02/01/2025 6:34 am
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I understand that both SPI (Serial Peripheral Interface) and I2C (Inter-Integrated Circuit) are commonly used communication protocols in microcontrollers, but I've read that SPI is generally faster than I2C.
Could someone explain the key reasons behind SPI's speed advantage? Does it have to do with the way data is transmitted, the absence of certain control mechanisms, or other factors?
Also, are there specific scenarios where the speed difference between SPI and I2C might not matter as much?
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06/01/2025 7:22 am
SPI is faster than I2C due to its full-duplex communication, higher clock rates, simpler protocol without addressing or acknowledgment, and actively driven lines that avoid pull-up resistor delays. It excels in high-speed applications but requires more pins and is less suited for multi-device setups. The speed difference may not matter in low-data-rate, low-power, or noise-sensitive applications where I2C's simplicity and robustness are advantageous.
I hope it help.
