DESCRIPTION
The X28C64 is an 8K x 8 E2PROM, fabricated with Xicorâs 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 byte wide 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 Xicorâs hard ware write protect capability.
Xicor E2PROMs are designed and tested for applications requiring extended endurance. Inherent data retention is greater than 100 years.
FEATURES
⢠150ns Access Time
⢠Simple Byte and Page Write
âSingle 5V Supply
âNo External High Voltages or VPP Control Circuits
âSelf-Timed
âNo Erase Before Write
âNo Complex Programming Algorithms
âNo Overerase Problem
⢠Low Power CMOS
â60mA Active Current Max.
â200µA Standby Current Max.
⢠Fast Write Cycle Times
â64 Byte Page Write Operation
âByte or Page Write Cycle: 5ms Typical
âComplete Memory Rewrite: 0.625 sec. Typical
âEffective Byte Write Cycle Time: 78µs Typical
⢠Software Data Protection
⢠End of Write Detection
âDATA Polling
âToggle Bit
⢠High Reliability
âEndurance: 100,000 Cycles
âData Retention: 100 Years
⢠JEDEC Approved Byte-Wide Pinout
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