DESCRIPTION
The X28HC256 is a second generation high performance CMOS 32K x 8 E2PROM. It is fabricated with Xicor’s proprietary, textured poly floating gate technology, providing a highly reliable 5 Volt only nonvolatile memory.

FEATURES
• Access Time: 70ns
• Simple Byte and Page Write
   —Single 5V Supply
   —No External High Voltages or VPP 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: 100,000 Write Cycles
   —Data Retention: 100 Years
• Early End of Write Detection
   —DATA Polling
   —Toggle Bit Polling