How is USB so fast?

A more technical answer would be – The ability for the controller to clock at comparable speed to system clock, the usage of large buffers, a more efficient data encoding technique( read NRZI ), optimized ack and data flush features make it achieve faster rates.

Is USB the same as I2C?

I2C is a bicycle; USB-2 a pickup, USB-3 a truck. The different standards effectively mean a faster data transfer rate. The standards are all backwards compatible. There are power output differences, but that only comes into bearing should you daisy-chain usb devices.

Why is USB-C so fast?

The reason USB-C can help your devices charge faster is that the cables are simply designed to carry more power than previous versions of USB, which maxed out at 7.5W. Beyond the physical design of the cables, USB-C also supports USB Power Delivery which drastically enhances charge rates.

What is the theoretical speed of USB 3 2 Gen2?

USB 3.2, also named USB 3.2 Gen2x2, was released in 2017. It can be regarded as a USB 3.1 with dual channel mode. USB 3.2 use USB Type-C interface to enable dual-channel mode and each channel has a transmission speed of 10Gbps. Therefore, the theoretic speed of the USB 3.2 is 20Gbps.

What is the difference between I2C and USB?

I2C is commonly used for sensors like accelerometers that don’t need high data rates. LED drivers, temperature sensors, that sort of thing. USB : For programming you can use USB only because there’s a bootloader program already on the chip that sets the system up, receives the binary, and does the actual programming.

How do I put multiple devices on the I2C bus?

Putting multiple devices on the I2C bus is just a matter of wiring them together. USB is designed for a much higher data rate and requires hardware to send blocks of data of 512 bytes (USB2) or 1024 bytes (USB3). It will certainly need transmit and receive buffers of at least one packet.

What is the I2C interface used for?

I2C is designed for ad-hoc wiring together of extremely low cost devices. An I2C interface can be “bit bashed”, and therefore the required hardware is a few tens of gates at most. Even a more sophisticated I2C interace cna be implemented in the low hundreds of gates.