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X24C45

Xicor
Part Number X24C45
Manufacturer Xicor
Description Serial AUTOSTORE NOVRAM
Published Apr 16, 2005
Detailed Description APPLICATION NOTES A V A I L A B L E AN3 • AN7 • AN8 • AN15 • AN16 • AN25 • AN29 • AN30 • AN35 • AN36 • AN39 • AN56 • AN6...
Datasheet PDF File X24C45 PDF File

X24C45
X24C45

Overview
APPLICATION NOTES A V A I L A B L E AN3 • AN7 • AN8 • AN15 • AN16 • AN25 • AN29 • AN30 • AN35 • AN36 • AN39 • AN56 • AN69 X24C45 256 Bit X24C45 Serial AUTOSTORE™ NOVRAM 16 x 16 Bit FEATURES DESCRIPTION The Xicor X24C45 is a serial 256 bit NOVRAM featuring a static RAM configured 16 x 16, overlaid bit-by-bit with a nonvolatile E2PROM array.
The X24C45 is fabricated with Xicor’s Advanced CMOS Floating Gate technology.
The Xicor NOVRAM design allows data to be transferred between the two memory arrays by means of software commands or external hardware inputs.
A store operation (RAM data to E2PROM) is completed in 5ms or less and a recall operation (E2PROM data to RAM) is completed in 2µs or less.
The X24C45 also includes the AUTOSTORE feature, a user selectable feature that automatically performs a store operation when VCC falls below a preset threshold.
Xicor NOVRAMs are designed for unlimited write operations to RAM, either from the host or recalls from E2PROM and a minimum 1,000,000 store operations.
Inherent data retention is specified to be greater than 100 years.
• • • • • • • • • AUTOSTORE™ NOVRAM —Automatically Performs a Store Operation Upon Loss of VCC Single 5 Volt Supply Ideal for use with Single Chip Microcomputers —Minimum I/O Interface —Serial Port Compatible (COPS™, 8051) —Easily Interfaced to Microcontroller Ports Software and Hardware Control of Nonvolatile Functions Auto Recall on Power-Up TTL and CMOS Compatible Low Power Dissipation —Active Current: 10mA —Standby Current: 50µA 8-Lead PDIP and 8-Lead SOIC Packages High Reliability —Store Cycles: 1,000,000 —Data Retention: 100 Years FUNCTIONAL DIAGRAM NONVOLATILE 2 E PROM ST O STATIC RAM 256-BIT EC AL L R E ROW DECODE CONTROL LOGIC R RECALL (6) AS (7) CE (1) DI (3) SK (2) INSTRUCTION REGISTER COLUMN DECODE DO (4) INSTRUCTION DECODE 4-BIT COUNTER 3833 FHD F01 AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc.
COPS is a trademark of National Semiconductor Corp.
© Xicor, Inc.
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