X28C64D

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.
   -200A 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: 78s 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


Pinout




Specifications

Temperature under Bias
X28C64........................................10°C to +85°C
X28C64I, X28C64M....................65°C to +135°C
Storage Temperature.................65°C to +150°C
Voltage on any Pin with
Respect to VSS .......................................1V to +7V
D.C. Output Current ...........................................5mA
Lead Temperature
(Soldering, 10 seconds)................................. 300°C


Description

The X28C64D is an 8K x 8 E PROM, fabricated with Xicor's proprietary, high performance, floating gate CMOS technology. Like all Xicor programmable non-volatile memories the X28C64 is a 5V only device. The X28C64D features the JEDEC approved pinout for byte- wide memories, compatible with industry standard RAMs.

The X28C64D supports a 64-byte page write operation, effectively providing a 78s/byte write cycle and en- abling the entire memory to be typically written in 0.625 seconds. The X28C64D 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 X28C64D includes a user-optional software data protection mode that further enhances Xicor's hardware write protect capability.

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