描述：The X28HC256 is a second generation high performance CMOS 32k x 8 EEPROM. It is fabricated with Intersil’s proprietary, textured poly floating gate technology, providing a highly reliable 5V only nonvolatile memory Features • Access time: 70ns • Simple byte and page write    - Single 5V supply    - No external high voltages or VP-P control circuits    - Self-timed    - No erase before write    - No complex programming algorithms    - No overerase problem • Low power CMOS    - Active: 60mA    - Standby: 500µA • Software data protection    - Protects data against system level inadvertent writes • High speed page write capability • Highly reliable Direct Write™ cell    - Endurance: 1,000,000 cycles    - Data retention: 100 years • Early end of write detection    - DATA polling    - Toggle bit polling • Pb-free plus anneal available (RoHS compliant)