It is a micro controller used in various applications of embedded systems
The instructions used by Atmel 89CXX and 89CXXXX are the same or subset of 8051 microcontrollers.Fully static operation,flash program memory,less pin count andprecision analog comparator ( in case of 89C20510)are some of the attractions in going for these microcontrollers. Due to many similar features in the architecture and instruction and instruction set as that of 8051, it becomes possible for the 8051 designer to directly start using 89CXX and 89C20XX microcontrollers without any more efforts in learning these microcontrollers.
atmel is more cheaper and easy to use.. the programmer is also easy to built and try...
MAJOR COMPONENTS OF AN INVERTER An inverter design and components vary with requirements but following components are most commonly used in designing an inverter. 1. MICROCONTROLLER Microcontroller is the main and integral part of an inverter. The main working of microcontroller is to control the switching of signals according to the requirements. A single microcontroller can perform multiple functions (e.g.) generating PWM for switching, controlling the protection systems etc. There are various types and families of microcontrollers available in the market, for example : PIC family AVRs (ATMEGA series) Atmel Arduino FPga (etc) Depending on the design specifications, any microcontroller can be used. 2. BIPOLAR JUNCTION TRANSISTORS (BJTS) BJT or a bipolar junction transistor is a three layered device which is capable of controlling the current flow. In a BJT, a small current at the input of the device can control larger currents at the output. Thus, BJTs can amplify currents. They can be used as a relay driver, as a switch, as a constant current source, as an amplifier (etc.). 3. H-BRIDGE H -bridge is a topology in which four switching devices BJTs, MOSFETs or IGBTs are integrated together in a single circuit. The name H-Bridge is given to it because of the typical arrangement of this circuit. Mainly used switching devices in the H-bridge circuits are BJTs, MOSFETs or IGBTs. 4. MOSFETS The Metal-Oxide-Semiconductor-Field-Effect-Transistor (MOSFET) is a voltage controlled device and requires a very small input current. It is mainly used for switching of electronic signals as its switching speed is very high. It is the most commonly used FET in low-power high-frequency circuits. The MOSFET is composed of a channel of n-type or p-type semiconductor material, and is accordingly called an N-MOSFET or a P-MOSFET. 5. FILTERS At times it is desirable to have circuits capable of selectively filtering one frequency or range of frequencies out of a mix of different frequencies in a circuit. A circuit designed to perform this frequency selection is called a filter circuit.
List of Embedded System companies in Chennai 1. ACME Technology Pvt Ltd 2. Agnie Consulting(I) Pvt.Ltd 3. Alcatel-Lucent Chennai 4. American Mega Trends Pvt.Ltd 5. Ansaldo STS India Pvt. Ltd, Chennai 6. Apna Technologies 7. Appasamy Associate 8. Aricent Technologies 9. Arista Automation Pvt Ltd 10. Ashva Technologies Pvt Ltd 11. Atheros Communications 12. Atmel
because in atmel .............it is easy to program and troubleshooting
Atmel's population is 6,000.
Atmel was created in 1984.
89S52 has ISP so S stands for : Serial in System programmable.
89s51 and 89s52 both are same version of 8051 microcontroller
The symbol for Atmel Corporation in NASDAQ is: ATML.
Atmel Corporation (ATML) had its IPO in 1991.
As of July 2014, the market cap for Atmel Corporation (ATML) is $3,626,552,480.80.
8051 family
The 89S52 has four different ports. Each one of the ports has eight input/output lines. The ports are used to output data.
basically we can't differenciate b/w pic and atmel ..pic is being manufactured by microchio ..
a family