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Product Descriptions

The X28C64 is an 8K x 8 E2PROM, fabricated with Xicor’s proprietary, high performance, floating gate CMOS technology. Like all Xicor programmable nonvolatile memories the X28C64 is a 5V only device. The X28C64 features the JEDEC approved pinout for bytewide memories, compatible with industry standard RAMs.

The X28C64 supports a 64-byte page write operation, effectively providing a 78μs/byte write cycle and enabling the entire memory to be typically written in 0.625 seconds. The X28C64 also features DATA and Toggle Bit Polling, a system software support scheme used to indicate the early completion of a write cycle. In addition, the X28C64 includes a user-optional software data protection mode that further enhances Xicor’s hardware write protect capability.

Xicor E2PROMs are designed and tested for applications requiring extended endurance. Inherent data retention is greater than 100 years.

Product Features

? 150ns Access Time

? 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

—60mA Active Current Max.

—200μA Standby Current Max.

? Fast Write Cycle Times

—64 Byte Page Write Operation

—Byte or Page Write Cycle: 5ms Typical

—Complete Memory Rewrite: 0.625 sec. Typical

—Effective Byte Write Cycle Time: 78μs Typical

? Software Data Protection

? End of Write Detection

—DATA Polling

—Toggle Bit

? High Reliability

—Endurance: 100,000 Cycles

—Data Retention: 100 Years

? JEDEC Approved Byte-Wide Pinout

Specifications

Actual product photos

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Official Certificate&Certificate

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