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Abstract—In this paper we present efficient way to conserve energy and save the world from destruction. Technology which earlier used to be artificially embedded is going greener by  reducing its power consumption. Various advancements ( MCUs and MPUs) have been made in electronics leading to more sustainable and eco friendly appliances. Various methods to meet regulations on emission are-lighter bodies gasoline direct injections start stop HCCL, homogeneous charge compression ignition, lean burn (lean mixture combustion),New developments include higher real time performance using pipeline CPUs multi course higher frequency operation with high speed access to flash memory functional safety and latest technology in engine control.Recently there have been breakthroughs in HEVs and EVs as a consequence they are spreading rapidly around the world and are giving their part in controlling the emission of CO2.HEVs are system powered where system combines conventional internal combustion engine and electrical motor.EVs in contrast have no internal combustion engine.Both of these system abundantly consume energy therefore they carry a large capacity battery.Motor acts as generator thus converting mechanical into  electrical energy.MCUs are used in HEVs/EVs to integrate both function of motion control and regeneration control. Further elaborations on the above mentioned technologies has been presented in this paper.
Keywords—green drive, MONOS, Flash-based,CAN, ECU, HVAC

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Introduction 

People are turning green!. Eventually everyone is supporting go green drive and there is more awareness than before. People now use equipment that consume less energy. Tracing back it has been observed that the awareness to go green became more noticeable in the 1973 during the oil crisis.  Moreover , the Lehman Brothers crisis (2008) inspired green initiatives in various industry sectors: surges in solar-power generation, eco-friendly white-goods products, consumer electronics, and green cars.
A drive to conserve energy has surfaced in all industries including energy infrastructure, computer, communication, consumer products, automotive, commercial, medical, and so on. Lifestyle in 2010 is way different from that in 1980s since the advent of green technologies.

There have been breakthroughs to curb   
the consumption of CO2 emission and many countries have actively participated in this movement. Personal computing environment has evolved since the 1980s to mobile computing which has now permeated into varied aspects of our lives. Also, the automotive industry has changed drastically, going greener with fuel-efficient cars employing lower body weight construction to meet emission limitations in several regions of the world, as well as rapid introduction of electric vehicles (EVs) and Hybrid Electric Vehicles (HEVs).
One of the recent examples of awareness is  the Paris Agreement.
Paris agreement is  an agreement amongst various countries working in a framework to conserve environment. 
 
PROTOTYPE
GREEN CONTROL MCU IS CRITICAL FOR GREEN APPLICATION
Motors are used in many application air conditioners, refrigerator washing machines heat pumps and so on. MCUs can control such motor to minimize power consumption. They are charge of all aspects of signal processing vector control and inverter control for three phase motor. Supply of current is given by power devices under the direction of MCUs. In the automotive industry CO2 emission regulation continue to get tougher around the world. As a result of this Europe and many other countries are facing regulation on emission. Various methods to meet regulations on emission are-lighter bodies, gasoline direct injections ,start stop HCCL, homogeneous charge compression ignition, lean burn (lean mixture combustion).New developments include higher real time performance using pipeline CPUs multi course higher frequency operation with high speed access to flash memory ,functional safety and latest technology in engine control. Recently there have been breakthroughs in HEVs and EVs and as a consequence they are spreading rapidly around the world and are giving their part in controlling the emission of CO2.HEVs are system powered where system combines conventional internal combustion engine and electrical motor.
EVs in contrast have no internal combustion engine. Both of these system abundantly consume energy therefore they carry a large capacity battery. Motor acts as generator thus converting mechanical into electrical energy. MCUs are used in HEVs/EVs to integrate both function of motion control and regeneration control. 
NETWORK OF CONTROL
MCUs are used in various devices on a network for cooperative control on whole system .For each of the given level a particular protocol is applicable. Controller Area Network connect various control units such as motors in chassis control. Car instrumentation, break control HVAC .Local interconnect network is a low speed single master multi slave , it came up as subnetwork of CAN so as to connect sensors actuators and small motors. The Flex Ray communication is other stage of network with data rates upto 10MB per second and was designed for electro mechanical systems. Recently, Ethernet protocols have begun to be used in protocol network as an example they are used for the purpose of diagnosis. A significant application is collision detection system in which various crucial elements are networked. In this network of control millimeter wave radar is used to measure vehicle distance data. In September 2011 IEEE standard coordinating group presented interoperability reference model. Smart grid consists of many layers each with multiple network. Dominant networks in the customer domain are as follows-HAN,BAN and IAN.In distribution layer NAN, EAN, FAN along with AMI are used. Thus an entire network of control works for the development of an environment that supports green by reducing power consumption.
SMART CONTROL
Because of the need to correlate data from different types of data sources more sophisticated methods of control are required. High speed network control is there  to hold network traffic which indicates an increase in the number of control objects. Such sophisticated control through network is called smart control whose development has already begun in some cases. However these sophisticated network are so built that they take minimum power consumption. 
ULTRA LOW POWER TECHNOLOGY FOR SMART APPLICATIONS
In 2010 intermittent operation began key approach for reducing power consumption enabling the use of radio sensor nodes together with energy storing. Even with the use of intermittent operation its often impossible for power harvesting to supply all of the power needs of the radio sensor nodes. 
EMBEDED NON VOLATILE MEMORY FOR GREEN GROWTH
 Integration of embedded non volatile memory has become significant in MCU products enhancing its performance power and data security advantages. MONOS Technology has undergone long development process. By the use of a unique split-gate MONOS technology, Flash memory macros have been designed with only CMOS logic-compatible devices in the read path, achieving a 120MHz random-access read cycle and low-power read operation by low-voltage peripheral circuits with a non-boosted word-line scheme. A recent MCU incorporating the MONOS Flash using 40nm CMOS technology is currently the most advanced MCU. Such products are also available commercially .Further advances in MCU technology will see challenges in utilizing scaled down SoC-compatible CMOS, while matching requirements for lower-power and higher reliability under higher-temperature operations. Nevertheless, frequent power-ON and OFF schemes with frequent data up-/down-load of the chip, utilizing the embedded non-volatile memory, can provide an effective solution. Future system-power strategies are expected to be able to better employ the strengths of embedded non-volatile memory. However, the development and maturity of new improved non-volatile memory technologies must be awaited.
A. Block Diagram
 

IMPORTANCE OF GOING GREEN
There was a shortage of electric power when Japan  was hit by an earthquake.
The vulnerability of the distribution in electric power system has made everyone keenly aware of how essential its  attain a more secure, more safe, more reliable energy supply, one which is more green.

 
Above given figure depicts MCU shipment trends. 
Semiconductor technology has been a backbone to power consumption by facilitating energy consumption.
Microcontrollers surfaced in the market in the early 1970s.They were firstly used as electronic calculators,white goods and consumer electronics
The development of Microcomputers diverged along two paths-
Microprocessor(MPU) for personal computer and server 
Microcontrollers for embedded controls.

 
This is the collision detection system. MCUs are used in various devices on a network for cooperative control on whole system
For each of the given level a particular protocol is applicable
Controller Area Network to connect various control units such as motors in chassis control.
Car instrumentation, break control HVAC and so on.
Local interconnect network is a low speed single master multi slave , it came up as subnetwork of CAN so as to connect sensors actuators and small motors
The Flex Ray communication is other stage of network with data rates upto 10MB per second , was designed for electro mechanical systems.
Recently, Ethernet protocols have begun to be used in protocol network as an example they are used for the purpose of diagnosis.
A significant application is collision detection system in which various crucial elements are networked. Each ECU(electronic control unit),of the millimeter wave radar system, the vehicle
instrumentation system. The brake control system and the seat belt control system. Each connect to the safety CAN to the body system CAN chassis system
CAN.
4 . CONCLUSION. 
In future MCUs by their low power consumption will be used as an ever lasting applications and would be used in every aspect of our lives.They will mainly emerge in the feild of finely meshed networks.Such networked MCUs implmenting cooperative control are stated as , “Smart Microcontrollers”. 
Thus  a wide range of MCU products will be required
– ranging from very tiny powered MCUs which operate even without a battery, using only power from energy harvesters, to high-performance MCUs having the capability of providing predictable control in cooperative control environments. 
Flash-based MCUs fabricated which lead in edge processes will be the key for enabling the emerging broad range of MCU products, for example smart controllers. 

5.ACKNOWLEDGEMENT

We have given much efforts in this project. However, it would not have been possible without the kind support and help of many individuals. We would like to extend our sincere thanks to all of them. Firstly, thanking the ALMIGHTY without whose grace we would have never been able to complete this report successfully. We are thankful to Prof. Ramesh Vaddi for his guidance and constant supervision as well as for providing necessary information regarding the project & also for his support in completing it. We specially thank all the lab assistants for their timely support. We would like to express our gratitude towards our parents & members of IIIT-NR for their kind co-operation and encouragement which helped us in completion of this project. Our thanks and appreciations also go to the people who have willingly helped us out with their abilities. 
REFERENCES
1 EU Commission Directive 98/11/EC, Implementing Council Directive 92/75/EEC with regard to energy labeling of household lamps, January 27, 1998. 
2 EU Commission Directive 2010/30/EU of the European Parliament on the indication by labeling and standard product information of the consumption of energy and other resources by energy-related product, May 19, 2010. 
3 Energy Star® Overview of 2010 Achievement, the U.S. Environmental Protection Agency and the U.S. Department of Energy, March 1, 2011.
4 P. Stekl, Z. Peroutka, P. Grasblum,  “Sensorless Control of Permanent Magnet Motor with a Simple Position Controller Targeted for LowPerformance MCUs”,  14th International  Power Electronics and Motion Control Conference (EPE/PEMC),  2010. 
5 N.J. Killingsworth, S.M. Aceves, D.L. Flowers, M. Krstic, “Extremum Seeking Tuning of an Experimental HCCI Engine Combustion Timing Controller”, American Control Conference (ACC), 2007.
6IEEE  Take an expressway to go green
7Wikipedia-https://en.wikipedia.org/wiki/Paris_Agreement

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