AT17C128 etc

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EEPROM stands for Electrical Erasable Programmable Read Only Memory and also referred to as E???’?￠a??????a�????2PROM. As the label suggest, an EEPROM can be either erased and programmed with electrical pulses. Since it can be both electrically written into and electrically erased, the EEPROM can be quickly programmed and erased in perimeter for reprogramming without removing them from the circuit board.
EEPROM is also phoned a non-volatile memories for when power is turned off the stored data in the EEPROM will not be erased or intact. New EEPROM have no data in it and usually have to procedure with a programmer before it can be use. Information stored in this type of memories can be maintained for many annuals without a steady power afford.
What is the function of EEPROM? EEPROMs are used to store user programmable information such as: -
? VCR programming information
? CD programming information
? Digital satellite receiver control data
? User information on assorted client products
EEPROM in monitor performs two functions:
? When a monitor is alternate on it will copies all data or information from the EEPROM to the microprocessor. For instance, the EEPROM will let the microprocessor know the frequencies at which the monitor is going to manipulate.
? The EEPROM namely secondhand apt store the new settings of the monitor. The settings of the monitor will not be deleted even when the monitor is turned off. Anytime a change is made in the monitor settings Herve Leger Black Round neck Sleeveless Sophisticated Bandage Dress, the computer updates the setting in the EEPROM. When the monitor is corner ashore anew, the stored settings are used to set up the monitor for operation.
What are the symptoms if the MONITOR or TV's EEPROM data is corrupted or broke?
? No high voltage (not display).
? Horizontal or vertical frequencies flee.
? Cannot retention (store) current setting.
? Certain control functions like sound Herve Leger Red Black Sleeveless Fairytale Strapless Dress, brightness and contrast control does not functioning.
? On Screen Display (OSD) does not feature alternatively the OSD have a corrupted display.
? High voltage shut down (EEPROM set the horizontal frequency course too low or twice the line frequency perhaps leading to failure of the horizontal output transistor (HOT)).
What is an EEPROM programmer or copier?
EEPROM seldom fail Herve Leger PeachPuff V neck Straps Breathtaking Bandage Dress, they equitable lose or have their memories (file) corrupted may be deserving to high voltage and static expel from a monitor. Once reprogrammed they are as nice for current. As said earlier, new EEPROMs are empty and need information or data to be loaded in array for it to functions. The job of copying the data into an EEPROM is done along a programmer or a copier. Programmers comes in entire shapes and sizes. You tin copy these devices for repair replacement merely. You cannot copy them for resale without a letter of approved from the vendor who produced them. There is quite a number of companies selling EEPROM programmer:
Typical EEPROM chapter no:
24C02, 24C04 Herve Leger Black Sweetheart Straps Graceful Bandage Dress, 24C08 etc
24C325 Herve Leger Store, 24C645AT17C65 Herve Leger SlateGray Asymmetric neck Cap Sleeve Graceful Bandage Dress, AT17C128 etc
93C06, 93C46, 93C56, 93C66 etc
25010, 25020, 25040 etc
Jestine Yong is a electronic repairer and writer. For more message almost electronic mend please visit his website at
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