X28C512 Xicor, X28C512 Datasheet

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... The X28C512/513 is an 64K with Xicor’s proprietary, high performance, floating gate CMOS technology. Like all Xicor programmable non- volatile memories the X28C512/513 only device. The X28C512/513 features the JEDEC approved pinout for bytewide memories, compatible with industry stan- dard EPROMS ...

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... The Output Enable input controls the data output buffers and is used to initiate read operations. Data In/Data Out (I/O –I Data is written to or read from the X28C512/513 through the I/O pins. Write Enable (WE) The Write Enable input controls the writing of data to the X28C512/513. FUNCTIONAL DIAGRAM A 7 – – ...

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... The X28C512/513 features DATA Polling as a method to indicate to the host system that the byte write or page write cycle has completed. DATA Polling allows a simple bit test operation to determine the status of the X28C512/ 513, eliminating additional interrupt inputs or external hardware. During the internal programming cycle, any ...

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... READY HIGH DATA Polling can effectively halve the time for writing to the X28C512/513. The timing diagram in Figure 2a illustrates the sequence of events on the bus. The software flow diagram in Figure 2b illustrates one method of implementing the routine. 3856 FHD F08 ...

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... DATA Polling. This can be especially helpful in an array comprised of multiple X28C512/513 memories that is frequently up- dated. Toggle Bit Polling can also provide a method for status checking in multiprocessor applications. The timing diagram in Figure 3a illustrates the sequence of events on the bus ...

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... This circuit is nonvolatile and will remain set for the life of the device unless the reset command is issued. Once the software protection is enabled, the X28C512/ 513 is also protected from inadvertent and accidental writes in the powered-up state. That is, the software algorithm must be issued prior to writing additional data to the device ...

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... X28C512/513 will automatically disable further writes unless another command is issued to cancel it further commands are issued the X28C512/513 will be write protected during power-down and after any subse- quent power-up. The state of A algorithm is don’t care. ...

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... E PROM programmer, the following six step algo- rithm will reset the internal protection circuit. After t the X28C512/513 will be in standard operating mode. Note: Once initiated, the sequence of write operations should not be interrupted. 3856 FHD F14 8 ...

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... X28C512/X28C513 SYSTEM CONSIDERATIONS Because the X28C512/513 is frequently used in large memory arrays it is provided with a two line control architecture for both read and write operations. Proper usage can provide the lowest possible power dissipation and eliminate the possibility of contention where mul- tiple I/O pins share the same bus. ...

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... X28C512/X28C513 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias X28C512/513 ............................... – +85 C X28C512I/513I ........................... – +135 C X28C512M/513M ....................... – +135 C Storage Temperature ....................... – +150 C Voltage on any Pin with Respect ....................................... D.C. Output Current ............................................. 5mA Lead Temperature (Soldering, 10 seconds) .............................. 300 C RECOMMEND OPERATING CONDITIONS Temperature Min ...

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... X28C512/X28C513 POWER-UP TIMING Symbol PUR (2) t Power-up to Read Operation t PUW (2) Power-up to Write Operation CAPACITANCE 1MHz Symbol I/O (2) C Input/Output Capacitance (2) C Input Capacitance IN ENDURANCE AND DATA RETENTION Parameter Endurance Endurance Data Retention A.C. CONDITIONS OF TEST Input Pulse Levels Input Rise and ...

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... return HIGH (whichever occurs first) to the time when the outputs are no longer driven X28C512-90 X28C512-12 X28C512-15 X28C512-20 X28C512-25 X28C513-90 X28C513-12 X28C513-15 X28C513-20 X28C513-25 Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Units ...

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... X28C512/X28C513 WRITE CYCLE LIMITS Symbol Parameter (4) t Write Cycle Time WC t Address Setup Time AS t Address Hold Time AH t Write Setup Time CS t Write Hold Time CH CE Pulse Width HIGH Setup Time t OES OE HIGH Hold Time t OEH WE Pulse Width t WP ...

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... X28C512/X28C513 CE Controlled Write Cycle ADDRESS OES DATA IN DATA OUT Page Write Cycle OE ( *ADDRESS (6) I/O BYTE 0 *For each successive write within the page write operation –A 15 should be the same or writes to an unknown address could occur. ...

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... X28C512/X28C513 DATA Polling Timing Diagram ( ADDRESS I/O 7 Toggle Bit Timing Diagram OEH OE HIGH Z I Starting and ending state of I/O 6 will vary, depending upon actual Note: (7) Polling operations are by definition read cycles and are therefore subject to read cycle timings. ...

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... X28C512/X28C513 NOTES 16 ...

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... X28C512/X28C513 PACKAGING INFORMATION 32-LEAD HERMETIC DUAL IN-LINE P ACKAGE TYPE D PIN 1 SEATING PLANE 0.150 (3.81) MIN. 0.200 (5.08) 0.125 (3.18) NOTE: ALL DIMENSIONS IN INCHES (IN P ARENTHESES IN MILLIMETERS) 1.690 (42.95) MAX. 0.065 (1.65) 0.033 (0.84) 0.110 (2.79) TYP. 0.055 (1.40) 0.090 (2.29) TYP. 0.018 (0.46) 0.620 (15.75) 0.590 (14.99) TYP. 0.614 (15.60) 0.015 (0.38) 0.008 (0.20) 17 0.610 (15.49) 0.500 (12.70) ...

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... X28C512/X28C513 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. 0.300 (7.62) BSC 0.150 (3.81) BSC 0.020 (0.51 REF. 0.095 (2.41) 0.075 (1.91) 0.022 (0.56) DIA. 0.006 (0.15) 0.055 (1.39) 0.045 (1.14) TYP. (4) PLCS. 0.015 (0.38) MIN. 0.040 (1.02 REF. TYP. (3) PLCS. ...

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... X28C512/X28C513 PACKAGING INFORMATION 32-LEAD CERAMIC FLAT PACK TYPE F 0.828 (21.04) 0.812 (20.64) 0.007 (0.18) 0.004 (0.10) 0.370 (9.40) 0.270 (6.86) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) PIN 1 INDEX 1 32 0.488 0.430 (10.93) 0.347 (8.82) 0.330 (8.38) 0.030 (0.76) MIN 19 0.019 (0.48) 0.015 (0.38) 0.50 (1.27) BSC 0.045 (1.14) MAX. 0.005 (0.13) MIN. 0.130 (3.30) 0.090 (2.29) 0.047 (1.19) 0.026 (0.66) 3926 FHD F20 ...

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... X28C512/X28C513 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 NOTES: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. DIMENSIONS WITH NO TOLERANCE FOR REFERENCE ONLY 0.050 (1.27) TYP. 0.021 (0.53) 0.013 (0.33) SEATING PLANE TYP. 0.017 (0.43) CO – ...

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... X28C512/X28C513 PACKAGING INFORMATION 36-LEAD CERAMIC PIN GRID ARRAY PACKAGE TYPE 0.090 (2.29) 0.070 (1.78 0.090 (2.29) 0.070 (1.78) PIN 1 INDEX 0.770 (19.56) 0.750 (19.05) SQ. NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS TYP. 0.100 (2.54) ALL LEADS ...

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... X28C512/X28C513 PACKAGING INFORMATION 32-LEAD PLASTIC DUAL IN-LINE PACKAGE TYPE P PIN 1 INDEX PIN 1 SEATING PLANE 0.160 (4.06) 0.125 (3.17) 0.110 (2.79) 0.090 (2.29) TYP. 0.010 (0.25) NOTE: 1. ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 2. PACKAGE DIMENSIONS EXCLUDE MOLDING FLASH 1.665 (42.29) 1.644 (41.76) 1.500 (38.10) REF. 0.070 (17.78) 0.022 (0.56) 0.030 (7.62) 0.014 (0.36) 0.625 (15.88) 0.590 (14.99) ...

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... X28C512/X28C513 PACKAGING INFORMATION 32-LEAD CERAMIC SMALL OUTLINE GULL WING PACKAGE TYPE R 0.340 0.007 0.0192 0.0138 0.840 MAX. 0.050 0.440 MAX. 0.560 NOM. NOTES: 1. ALL DIMENSIONS IN INCHES 2. FORMED LEAD SHALL BE PLANAR WITH RESPECT TO ONE ANOTHER WITHIN 0.004 INCHES SEE DETAIL “A” ...

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... X28C512/X28C513 PACKAGING INFORMATION 12.522 (0.493) 12.268 (0.483) 1.143 (0.045) 0.965 0.889 (0.035) PIN #1 IDENT. (0.038) O 1.016 (0.040) O 0.762 (0.030) 1 10.058 (0.396) 9.957 (0.392) A 14.148 (0.557) 13.894 (0.547) 14.80 0.05 (0.583 0.002) 0.30 (0.012 SOLDER PADS TYPICAL 40 PLACES 0.17 (0.007) 0.03 (0.001) FOOTPRINT NOTE: 1. ALL DIMENSIONS ARE SHOWN IN MILLIMETERS (INCHES IN PARENTHESES). ...

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... A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system affect its satety or effectiveness. X28C512 X Device -X Access Time – ...