검색 결과: AT45DB642DCNU in Flash Memory
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Flash Memory

Flash memory is an electronic non-volatile computer storage medium that can be electrically erased and reprogrammed. Introduced by Toshiba in 1984, flash memory was developed from EEPROM (electrically erasable programmable read-only memory). There are two main types of flash memory, which are named after the NAND and NOR logic gates. The internal characteristics of the individual flash memory cells exhibit characteristics similar to those of the corresponding gates. Whereas EPROMs had to be completely erased before being rewritten, NAND type flash memory may be written and read in blocks (or pages) which are generally much smaller than the entire device. NOR type flash allows a single machine word (byte) to be written??to an erased location??or read independently. The NAND type is primarily used in main memory, memory cards, USB flash drives, solid-state drives, and similar products, for general storage and transfer of data. NAND or NOR flash memory is also often used to store configuration data in numerous digital products, a task previously made possible by EEPROM or battery-powered static RAM. One significant disadvantage of flash memory is the finite amount of read/write cycles in a specific block. Example applications of both types of flash memory include personal computers, PDAs, digital audio players, digital cameras, mobile phones, synthesizers, video games, scientific instrumentation, industrial robotics, medical electronics, and so on. In addition to being non-volatile, flash memory offers fast read access times, as fast as dynamic RAM, although not as fast as static RAM or ROM. Its mechanical shock resistance helps explain its popularity over hard disks in portable devices, as does its high durability, being able to withstand high pressure, temperature, immersion in water, etc.

Memory > ROM > Flash Memory

부품 번호	DS	제조 업체	D/C	수량	지역	액션
AT45DB642D-CNU		Adesto	201409+	1	China	견적 요청서
AT45DB642D-CNU		Adesto	-	2700	China	견적 요청서
AT45DB642D-CNU		Adesto	201412+	40	China	견적 요청서
AT45DB642D-CNU		Adesto	201409+	295	China	견적 요청서
AT45DB642D-CNU		Adesto	-	44	China	견적 요청서
AT45DB642D-CNU		Adesto	2021	8000	Hong Kong	견적 요청서

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