X25057

4K X25057 DESCRIPTION 512 x 8 Bit 5MHz Low Power SPI Serial E2PROM with IDLock™ Memory FEATURES 5MHz Clock Rate IDLock™ Memory —IDLock First or Last Page, Any 1/4 or Lower 1/2 of E2PROM Array Low Power CMOS —<1µA Standby Current —<3mA Active Current during Write —<400µA Active Current during Read 1.8V to 3.6V, 2.7V-5.5V or 4.5V to 5.5V Operation Built-in Inadvertent Write Protection —Power-Up/Power-Down Protection Circuitry —Write Enable Latch —Write Protect Pin SPI Modes (0,0 & 1,1) 512 x 8 Bits —16 Byte Page Mode Self-Timed Write Cycle —5ms Write Cycle Time (Typical) High Reliability —Endurance: 100,000 Cycles/Byte —Data Retention: 100 Years —ESD: 2000V on all pins 8-Lead MSOP Package 8-Lead TSSOP Package 8-Lead SOIC Package 8-Lead PDIP Package FUNCTIONAL DIAGRAM SI SO COMMAND DECODE AND CONTROL LOGIC DATA REGISTER Y DECODE LOGIC 16 SCK X DECODE LOGIC 32 8 The X25057 is a CMOS 4K-bit serial E2PROM, internally organized as 512 x 8. The X25057 features a Serial Peripheral Interface (SPI) and software protocol allowing operation on a simple four-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. IDLock is a programmable locking mechanism which allows the user to lock system ID and parametric data in different portions of the E 2 PROM memory space, ranging from as little as one...