X24C45P Xicor, X24C45P Datasheet
X24C45P
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X24C45P Summary of contents
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... COPS is a trademark of National Semiconductor Corp. © Xicor, Inc. 1991, 1995, 1996 Patents Pending 3833-1.5 6/10/96 T3/C3/D0 NS X24C45 DESCRIPTION The Xicor X24C45 is a serial 256 bit NOVRAM featuring a static RAM configured 16 x 16, overlaid bit-by-bit with 2 a nonvolatile E PROM array. The X24C45 is fabricated with Xicor’ ...
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X24C45 PIN DESCRIPTIONS Chip Enable (CE) The Chip Enable input must be HIGH to enable all read/ write operations. CE must remain HIGH following a Read or Write command until the data transfer is com- plete. CE LOW places the ...
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X24C45 DEVICE OPERATION The X24C45 contains an 8-bit instruction register accessed via the DI input, with data being clocked in on the rising edge of SK. CE must be HIGH during the entire data transfer operation. Table 1. ...
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X24C45 WRITE The WRITE instruction contains the 4-bit address of the word to be written. The write instruction is immediately followed by the 16-bit word to be written. CE must remain HIGH during the entire operation. CE must go LOW ...
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X24C45 Figure 1. RAM Read HIGH Z DO *Bit 8 of Read Instructions is Don’t Care Figure 2. RAM Write Figure 3. ...
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X24C45 Figure 4. X24C45 State Diagram POWER AUTOSTORE POWER DOWN READ & WRITE RAM READ ENABLED OR WRITE STORE ENABLED AUTOSTORE ENABLED WREN COMMAND OFF STO OR WRDS CMD STO OR WRDS CMD RAM ENAS COMMAND 6 POWER ON POWER-UP ...
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X24C45 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias .................. – +135 C Storage Temperature ....................... – +150 C Voltage on any Pin with Respect ....................................... D.C. Output Current ............................................. 5mA Lead Temperature (Soldering, 10 ...
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X24C45 EQUIVALENT A.C. LOAD CIRCUIT 5V 919 OUTPUT 497 A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) Read and Write Cycle Limits Symbol SK ( Frequency t SK Positive Pulse Width SKH t SK Negative Pulse ...
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X24C45 Write Cycle SK CYCLE # t SKH CES Read Cycle SK CYCLE # HIGH SKL ...
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X24C45 NONVOLATILE OPERATIONS Operation Hardware Recall Software Recall Software Store ARRAY RECALL LIMITS Symbol t Recall Cycle Time RCC t Recall Pulse Width RCP t Recall to Output in High Z RCZ Recall Timing RECALL DO SOFTWARE STORE CYCLE LIMITS ...
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X24C45 AUTOSTORE Cycle Limits Symbol t AUTOSTORE Cycle Time ASTO V AUTOSTORE Threshold Voltage ASTH V AUTOSTORE Cycle End Voltage ASEND AUTOSTORE Cycle Timing Diagrams Parameter V CC AUTOSTORE CYCLE IN PROGRESS t ASTO STORE ...
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X24C45 PACKAGING INFORMATION 8-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P HALF SHOULDER WIDTH ON ALL END PINS OPTIONAL 0.015 (0.38) MAX. TYP. 0.010 (0.25) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 0.430 (10.92) 0.360 (9.14) 0.092 (2.34) DIA. ...
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X24C45 PACKAGING INFORMATION 8-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S PIN 1 INDEX 0.010 (0.25) 0.020 (0.50) 0 – 8 0.016 (0.410) 0.037 (0.937) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 0.150 (3.80) 0.158 (4.00) PIN ...
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... Device LIMITED WARRANTY Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Xicor, Inc. makes no warranty of merchantability or fitness tor any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice ...