‎PROTOCOL‏ 122 لا
‎is the short form of Inter-Integrated Circuit Serial Protocol. It is also referred‏ 120

‎as IIC or 120 or I2C. 120 bus uses 2 wires for connecting devices. The bus is Bidirectional
and synchronous 10 a common clock. Microcontroller with built या I2C are available. Data
rates of 1001൯5 ( The bus consists of two 11165 ~serial clock (I2C Protocol consists of
following fields:
* Start condition-jt 15 signaled by falling edge of SDA line while SCL line is kept high.
It is initiated by a master. Clock is controlled by master.

‎* Address packet consisting of read/write indication and slave acknowledge (SLA
The 1 20 protocol is a two_wire serial bus:

‎ee‏ سا

‎ടത്തി

‎Data transfer sequence

‎A basic Master to slave read or write sequence for I2C follows the following order: 1.
Send the START bit

‎2. Send the slave address (ADDR)

‎3. Send the Read

‎4. Wait for/Send an acknowledge bit (A)

‎5. Send/Receive the data byte (8 bits) (DATA)
6. Expect/Send acknowledge bit (A)

‎7. Send the STOP bit

‎DATA TRANSFER FROM MASTER TO SLAVE

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