X28HC64D

Features:

* 55ns 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
   -40 mA Active Current Max.
   -200 A Standby Current Max.
* Fast Write Cycle Times
   -64 Byte Page Write Operation
   -Byte or Page Write Cycle: 2ms Typical
   -Complete Memory Rewrite: 0.25 sec. Typical
   -Effective Byte Write Cycle Time: 32s Typical
* Software Data Protection
* End of Write Detection
   -DATA Polling
   -Toggle Bit


Pinout




Specifications

Temperature under Bias
X28HC64.....................................10°C to +85°C
X28HC64I, X28HC64M ..............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 X28HC64D 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 X28HC64D is a 5V only device. The X28HC64D features the JEDEC approved pinout for bytewide memories, compatible with industry standard RAMs.

The X28HC64D supports a 64-byte page write operation, effectively providing a 32 s/byte write cycle and enabling the entire memory to be typically written in 0.25 seconds. The X28HC64D also features DATA Polling and

Toggle Bit Polling, two methods providing early end of write detection. In addition, the X28HC64D 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.