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APPLICATION NOTE A V A I LA B L E
AN19 • AN38 • AN41 • AN61
64K
X25642
8K x 8 Bit
Advanced SPI Serial E2PROM with Block LockTM Protection
FEATURES DESCRIPTION The X25642 is a CMOS 65,536-bit serial E2PROM, internally organized as 8K x 8. The X25642 features a Serial Peripheral Interface (SPI) and software protocol allowing operation on a simple three-wire bus. The bus signals are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a chip select (CS) input, allowing any number of devices to share the same bus. The X25642 also features two additional inputs that provide the end user with added flexibility.