X24325 Datasheet (data sheet) PDF





X24325 Datasheet, Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protection

X24325   X24325  

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Preliminary Information 32K X24325 409 6 x 8 Bit Advanced 2-Wire Serial E2PRO M with Block LockTM Protection FEATURES DESCRIPTION The X24325 is a CMOS 32,76 8 bit serial E2PROM, internally organiz ed 4096 x 8. The X24325 features a seri al interface and software protocol allo wing operation on a simple two wire bus . Three device select inputs (S0, S1, S 2) allow up to eight devices to share a common two wire bus. A Write Protect R egister at the highest address location , FFFh, provides three new write protec tion features: Software Write Protect, Block Write Protect, and Hardware Write Protect. The Software Write Protect fe ature prevents any nonvol

X24325 Datasheet, Advanced 2-Wire Serial E 2 PROM with Block Lock TM Protection

X24325   X24325  
atile writes to the X24325 until the WEL bit in the write protect register is s et. The Block Write Protection feature allows the user to individually write p rotect four blocks of the array by prog ramming two bits in the write protect r egister. The Programmable Hardware Writ e Protect feature allows the user to in stall the X24325 with WP tied to VCC, p rogram the entire memory array in place , and then enable the hardware write pr otection by programming a WPEN bit in t he write protect register. After this, selected blocks of the array, including the write protect register itself, are permanently write protected. Xicor E2P ROMs are designed and tested for applic ations requiring extended endurance. In herent data retention is greater than 1 00 years. H.V. GENERATION TIMING & CONT ROL • • • • • • • • • • 2.7V to 5.5V Power Supply L ow Power CMOS —Active Read Current Le ss Than 1mA —Active Write Current Les s Than 3mA —Standby Current Less Than 1µA Internally Organized 4096 x 8 New Programmable Block Lock Protection — Software Write Protection —Programmab le hardware Write Protect Block Lock (0 , 1/4, 1/2, or all of the E2PROM array) 2 Wire Serial Interface Bidirectional Data Transfer Protocol 32 Byte Page Wri te Mode —Minimizes Total Write Time Per Byte Self Timed Write Cycle —Typical Write C








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