AT34C02B

Features Permanent and Reversible Software Write Protection for the First-half of the Array – Software Procedure to Verify Write Protect Status Hardware Write Protection for the Entire Array Low-voltage and Standard-voltage Operation – 1.7 (VCC = 1.7V to 3.6V) Internally Organized 256 x 8 Two-wire Serial Interface Schmitt Trigger, Filtered Inputs for Noise Suppression Bidirectional Data Transfer Protocol 100 kHz (1.7V) and 400 kHz (2.7V and 3.6V) Compatibility 16-byte Page Write Modes Partial Page Writes Are Allowed Self-timed Write Cycle (5 ms max) High-reliability – Endurance: 1 Million Write Cycles – Data Retention: 100 Years 8-lead JEDEC SOIC, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-lead TSSOP, and 8-ball dBGA2 Packages Description The AT34C02B provides 2048 bits of serial electrically-erasable and programmable read only memory (EEPROM) organized as 256 words of 8 bits each. The first-half of the device incorporates a permanent and a reversible software write protection feature while hardware write protection for the entire array is available via an external pin. Once the permanent software write protection is enabled, by sending a special command to the device, it cannot be reversed. However, the reversible software write www.DataSheet4U.com protection is enabled and can be reversed by sending a special command. The hardware write protection is controlled with the WP pin and can be used to protect the entire array, whether or not the software...