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EEPROM

EPROM (also written E2PROM and pronounced "e-e-prom", "double-e prom", "e-squared", or simply "e-prom") stands for Electrically Erasable Programmable Read-Only Memory and is a type of non-volatile memory used in computers and other electronic devices to store small amounts of data that must be saved when power is removed, e.g., calibration tables or device configuration. Unlike bytes in most other kinds of non-volatile memory, individual bytes in a traditional EEPROM can be independently read, erased, and re-written. When larger amounts of static data are to be stored (such as in USB flash drives) a specific type of EEPROM such as flash memory is more economical than traditional EEPROM devices. EEPROMs are organized as arrays of floating-gate transistors. An EPROM usually must be removed from the device for erasing and programming, whereas EEPROMs can be programmed and erased in-circuit, by applying special programming signals. Originally, EEPROMs were limited to single byte operations which made them slower, but modern EEPROMs allow multi-byte page operations. It also has a limited life - that is, the number of times it could be reprogrammed was limited to tens or hundreds of thousands of times. That limitation has been extended to a million write operations in modern EEPROMs. In an EEPROM that is frequently reprogrammed while the computer is in use, the life of the EEPROM can be an important design consideration. It is for this reason that EEPROMs were used for configuration information, rather than random access memory.

Memory > ROM > EEPROM

型号	DS	厂牌	批号	数量	地区	采购
AT25256AN-10SU-2.7		Atmel	-	1689	中国	要求报价
AT25256AN-10SU-2.7		Atmel	-	3000	香港	要求报价
AT25256AN-10SU-2.7		Atmel	-	3000	中国	要求报价
AT25256AN-10SU-2.7		Atmel	-	7600	中国	要求报价
AT25256AN-10SU-2.7		Atmel	2009+	7841	中国	要求报价
AT25256AN-10SU-2.7		Atmel	-	6635	中国	要求报价
AT25256AN-10SU-2.7		Atmel	2022+	20022	中国	要求报价
AT25256AN-10SU-2.7		Atmel	-	17041	香港	要求报价
AT25256AN-10SU-2.7		Atmel	-	5	美国	要求报价
AT25256AN-10SU-2.7		Atmel	2010+	150	加拿大	要求报价
AT25256AN-10SU-2.7		Atmel	200806	4	美国	要求报价
AT25256AN-10SU-2.7		Atmel	-	5	台湾	要求报价
AT25256AN-10SU-2.7		Atmel	200834	18	美国	要求报价
AT25256AN-10SU-2.7		Atmel	2010+	1381	中国	要求报价
AT25256AN10SU27		Atmel	-	204	中国	要求报价
AT25256AN-10SU-2.7		Atmel	-	35524	香港	要求报价
AT25256AN-10SU2.7		Atmel	2009+	8	中国	要求报价

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