X20C16 Xicor, X20C16 Datasheet

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... AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc. ©Xicor, Inc. 1991, 1995, 1996 Patents Pending 3826-2.9 7/31/97 T4/C0/D0 SH X20C16 DESCRIPTION The Xicor X20C16 NOVRAM featuring a high- speed static RAM overlaid bit-for-bit with a nonvolatile electrically erasable PROM (E AUTOSTORE feature which automatically saves the RAM contents to E ...

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... Data In/Data Out (I/O –I Data is written to or read from the X20C16 through the I/O pins. The I/O pins are placed in the high impedance state when either HIGH or when NE is LOW. Write Enable (WE) The Write Enable input controls the writing of data to the static RAM ...

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... X20C16 DEVICE OPERATION The CE, OE, WE, and NE inputs control the X20C16 operation. The X20C16 byte-wide NOVRAM uses a 2-line control architecture to eliminate bus contention in a system environment. The I/O bus will high impedance state when either HIGH, or when NE is LOW. RAM Operations RAM read and write operations are performed as they would be with any static RAM ...

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... 0 0.4 V 0.4 V 2.4 V Parameter = 5V. CC Test Max Limits X20C16 5V 10% Test Conditions Address Inputs = 0.4V/2.4V Levels @ f = 20MHz All I/Os = Open All Inputs = V IH All I/Os = Open All Other Inputs = V IH, IH All I/Os = Open All Inputs = V – 0.3V CC All I/Os = Open ...

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... X20C16 ENDURANCE AND DATA RETENTION Parameter Endurance Store Cycles Data Retention MODE SELECTION EQUIVALENT A.C. LOAD CIRCUIT 5V 735 OUTPUT 318 Min. 100,000 ...

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... C Min. Max OLZ DATA VALID are periodically sampled and not 100% tested. t OHZ 6 X20C16-45 X20C16-55 Min. Max. Min. Max ...

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... Min. Max. Min DATA VALID 7 X20C16-55 Max. Min. Max. Units 3826 PGM T11 ...

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... X20C16 CE Controlled Write Cycle ADDRESS DATA OUT DATA DATA VALID 3826 FHD F07.2 ...

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... The Recall Pulse Width (t RCP NE and CE. X20C16-35 Min. Max. Min. 10 0.6 1000 RCC t RCP ) is a minimum time that NE, OE and CE must be LOW simultaneously to insure data integrity, 9 X20C16-45 X20C16-55 Max. Min. Max 1000 50 1000 0 Units 3826 PGM T13 3826 FHD F10 ...

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... SOE OEST NHZ X20C16-35 Min. Max 555 2AA SPH NEH t NHZ X20C16-45 X20C16-55 Min. Max. Min. Max 3826 PGM T12.2 ...

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... X20C16 WE Controlled Software Command Sequence ADDRESS NES NE t SOE DATA OUT t DS DATA 555 2AA SPH NEH t NHZ STO 555 t OEST CMD 3826 FHD F09.2 ...

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... X20C16 AUTOSTORE Feature The AUTOSTORE feature automatically saves the con- tents of the X20C16’s static RAM to the on-board bit-for- 2 bit shadow E PROM at power-down. This circuitry in- sures that no data is lost during accidental power-downs or general system crashes, and is ideal for microproces- sor caching systems, embedded software systems, and general system back-up memory ...

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... X20C16 SDP (Software Data Protection) POWER STORE ADDR 555, ADDR 555, DATA STORE ADDR 2AA, DATA STORE WRITE: ADDR 555, DATA=COMMAND STORE ENABLE/RESET AUTOSTORE SOFTWARE DATA PROTECTION COMMANDS Command EAS Enable AUTOSTORE RAS Reset AUTOSTORE SS Software Store ...

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... X20C16 NOTES 14 ...

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... X20C16 PACKAGING INFORMATION 28-LEAD HERMETIC DUAL IN-LINE PACKAGE TYPE D PIN 1 SEATING PLANE 0.200 (5.08) 0.125 (3.18) 0.110 (2.79) 0.090 (2.29) TYP. 0.100 (2.54) TYP. 0.010 (0.25) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 1.490 (37.85) 1.435 (36.45) 1.30 (33.02) REF. 0.070 (1.78) 0.026 (0.66) 0.030 (0.76) 0.014 (0.36) TYP. 0.055 (1.40) TYP. 0.018 (0.46) 0.620 (15.75) 0.590 (14.99) TYP. 0.614 (15.60) ...

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... X20C16 PACKAGING INFORMATION 28-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P PIN 1 INDEX PIN 1 SEATING PLANE 0.150 (3.81) 0.125 (3.17) 0.110 (2.79) 0.090 (2.29) TYP. 0.010 (0.25) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 1.460 (37.08) 1.400 (35.56) 1.300 (33.02) REF. 0.062 (1.57) 0.020 (0.51) 0.050 (1.27) 0.016 (0.41) 0.610 (15.49) 0.590 (14.99 0.550 (13.97) 0.510 (12.95) 0.085 (2.16) 0.040 (1.02) ...

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... X20C16 PACKAGING INFORMATION 32-PAD CERAMIC LEADLESS CHIP CARRIER PACKAGE TYPE E 0.015 (0.38) 0.003 (0.08) PIN 1 0.200 (5.08) BSC 0.028 (0.71) 0.022 (0.56) (32) PLCS. 0.458 (11.63) 0.442 (11.22) 0.458 (11.63) 0.300 (7.62) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. TOLERANCE: 1% NTL 0.005 (0.127) 0.150 (3.81) BSC 0.020 (0.51 REF. 0.095 (2.41) 0.075 (1.91) 0.022 (0.56) 0.006 (0.15) ...

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... X20C16 PACKAGING INFORMATION 32-LEAD PLASTIC LEADED CHIP CARRIER PACKAGE TYPE J 0.420 (10.67) 0.045 (1.14 0.495 (12.57) 0.485 (12.32) TYP. 0.490 (12.45) 0.453 (11.51) 0.447 (11.35) TYP. 0.450 (11.43) 0.300 (7.62) REF. PIN 1 0.050 (1.27) TYP. 0.021 (0.53) 0.013 (0.33) TYP. 0.017 (0.43) 0.595 (15.11) 0.585 (14.86) TYP. 0.590 (14.99) 0.553 (14.05) 0.547 (13.89) TYP. 0.550 (13.97) 0.400 (10.16) REF. NOTES: 1 ...

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... X20C16 PACKAGING INFORMATION 28-LEAD PLASTIC SMALL OUTLINE GULL WING PACKAGE TYPE S 0.1040 (2.6416) 0.0940 (2.3876) 0 – 8 NOTES: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. FORMED LEAD SHALL BE PLANAR WITH RESPECT TO ONE ANOTHER WITHIN 0.004 INCHES 3. BACK EJECTOR PIN MARKED “KOREA” 4. CONTROLLING DIMENSION: INCHES (MM) ...

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... X20C16 PACKAGING INFORMATION SEE NOTE 2 8.02 (0.315) 7.98 (0.314) 1.18 (0.046) 1.02 (0.040) 0.58 (0.023) 0.42 (0.017) SOLDER PADS FOOTPRINT NOTE: 1. ALL DIMENSIONS ARE SHOWN IN MILLIMETERS (INCHES IN PARENTHESES). 32-LEAD THIN SMALL OUTLINE PACKAGE (TSOP) TYPE T SEE NOTE 2 12.50 (0.492) 12.30 (0.484) PIN #1 IDENT. O 0.76 (0.03) 14.15 (0.557) 13.83 (0.544) 14.80 ± 0.05 (0.583 ± 0.002) 0.30 ± ...

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... X20C16 ORDERING INFORMATION X20C16 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 ...