How fast is I2C communication?
Data on the I2C-bus can be transferred at rates of up to 100 kbit/s in the Standard-mode, up to 400 kbit/s in the Fast-mode, up to 1 Mbit/s in Fast-mode Plus, or up to 3.4 Mbit/s in the High-speed mode.
What is the maximum speed of information moving with I2C?
I2C data transfers occur over a physical two wire interface which consists of a unidirectional serial clock (SCL) and bidirectional data (SDA) line. These transfers can occur over speeds of 100kbits/s in Standard Mode, 400kbits/s in the Fast Mode, 1Mbits/s in Fast Mode Plus, and up to 3.4Mbits/s in High Speed Mode.
What kind of interface is programming AVR I2C?
Programming AVR I2C interface. I2C interface (also referred to as IIC or TWI) is a widely used interface in embedded applications. Two wire bus initially was used by Philips and become a standard among chip vendors. I2C bus consists of two lines called Serial Data Line (SDA) and Serial Clock Line (SCL).
Why does the I2C bus have a lower speed?
As a consequence a master set to clock at 100 kHz will most likely produce a lower speed on the bus. As the impact of electrical latency increases with higher clock rates this effect shows more with higher speeds. The I2C bus is intended for inter-IC communication and this usually means small data packets.
What kind of signal does an I2C interface use?
Communication between devices is master and slave-based. Master generates a clock signal, initiates, and terminates data transfer. From an electrical point of view, I2C devices use open drain (open collector) pins. For correct operation, SDA and SCL lines require pull-up resistors.
Can a slave receiver use the I2C interface?
Slave Receiver – expects for master transmission and accepts data. It is worth mention that the I2C interface supports multi-master transmission. It doesn’t mean that all masters can transmit data at the same time. Each master must wait for the current transmission to be finished and then can initiate the transfer.