I2 c bus communication

MICROCONTROLLER BASED SYSTEM DESIGN
“I2C BUS COMMUNICATION”
V. KALAIRAJAN M.E;
ASSISTANT PROFESSOR,
ELECTRICAL AND ELECTRONICS ENGINEERING,
KONGUNADU COLLEGE OF ENGINERING AND TECHNOLOGY, TRICHY.
1KONGUNADU COLLEGE OF ENGINERING AND TECHNOLOGY, TRICHY I2C BUS COMMUNICATION

VIEWS:
 I2C BUS:(INTER-INTEGRATED CIRCUIT BUS.
 FEATURES OF I2C BUS.
 BLOCK DIAGRAM OF I2C BUS.
 COMMUNICATION OF I2C BUS.
 OPERATING MODES.
 TRANSMITTER.
 RECEIVER.
 MASTER.
 SLAVE.
 MULTI-MASTER.
 ARBITRATION.
 SYNCHRONIZATION.
 ADDRESSING OF I2C DEVICES.
 CONCLUSION.
 REFERENCES.

I2C BUS:(INTER-INTEGRATED CIRCUIT BUS)
 An Inter-IC bus is used to communicate the Master and slave
 devices. For this a primer on the protocol is used.
FEATURES OF I2C BUS:
 It is a simple, low-bandwidth, short-distance protocol.
 Most available I2C devices operate at speeds up to 400Kbps.
 The standard mode for data transfer is up to 100 Kbps.
 Here master is microcontroller like PIC16CXX.
 Slave is any interfacing devices like ADC,DAC, and LCD display.
 In the I2C interface protocol each master and slave device has an
address, when multi-master and multi-slave is used.

BLOCK DIAGRAM OF I2C BUS:
COMMUNICATION OF I2C BUS:

OPERATING MODES :
 Master-transmitter and Slave-receiver.
 Slave-transmitter and Master-receiver.
TRANSMITTER:
 It is the device which transfer the data to the bus.
RECEIVER:
 It is the device which receives the data from the bus.
MASTER:
 It is the CPU or computer which start the data transmission.
 Generates the clock signal.
 Stop the data transfer.

SLAVE:
 it is the device addressed by master to transfer the data.
MULTI-MASTER:
 Here more than one master devices are used to control the
complex process. Only one master can transfer the data at a
time.
ARBITRATION:
 it is the procedure which maintain only one mater in active at
a time.
SYNCHRONIZATION:
 it is used to synchronize two are more clock signals.

ADDRESSING OF I2C DEVICES:
Two address formats are used.
 7-bit address format with a R/W bit.
 10-bit address with a R/W bit.
7-bit address format with a R/W bit:
 It is used for simple process.

10-bit address with a R/W bit:
 It is used for simple process.

CONCLUSION:
 In this above presentation we can learn about basic concept of I2C
bus , block diagram, addressing the slave devices, and purpose of
I2C bus clearly.
REFERENCES:
 Mazidi, M.A.,“PIC Microcontroller” Rollin Mckinlay, Danny
causey Printice Hall of India, 2007.
 Ravichandran,C., and Arulaalan,M., “Microcontroller Based
System Design”, Suchitra Publications, Ist edition,2016.
 Dr.Balamurugan.C.R., Periyaazhagar., “Microcontroller Based
System Design”, Megnus Publications, Ist edition,2016.
 Online wikipedia search.
 https://goo.gl/images/Zvtq1K.

I2 c bus communication

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