APPLICATION NOTES A V A I L A B L E X25020 2K AN9 • AN18 • AN31 • AN37 • AN40 X25020 SPI Serial E2PROM with Block LockTM Protection DESCRIPTION 256 x 8 Bit FEATURES • • • • • • • • • • • 1MHz Clock Rate SPI Modes (0,0 & 1,1) 256 X 8 Bits —4 Byte Page Mode Low Power CMOS —10µA Standby Current —3mA Active Write Current 2.
7V To 5.
5V Power Supply Block Lock Protection —Protect 1/4, 1/2 or all of E2PROM Array Built-in Inadvertent Write Protection —Power-Up/Power-Down protection circuitry —Write Latch —Write Protect Pin Self-Timed Write Cycle —5ms Write Cycle Time (Typical) High Reliability —Endurance: 100,000 cycles per byte —Data Retention: 100 Years —ESD protection: 2000V on all pins 8...

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