X28HC64D-50 XICOR [Xicor Inc.], X28HC64D-50 Datasheet
X28HC64D-50
Related parts for X28HC64D-50
X28HC64D-50 Summary of contents
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... RAMs. The X28HC64 supports a 64-byte page write operation, effectively providing a 32 s/byte write cycle and en- abling the entire memory to be typically written in 0.25 seconds. The X28HC64 also features DATA Polling and Toggle Bit Polling, two methods providing early end of write detection ...
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... X28HC64 PIN DESCRIPTIONS Addresses (A – The Address inputs select an 8-bit memory location during a read or write operation. Chip Enable (CE) The Chip Enable input must be LOW to enable all read/ write operations. When CE is HIGH, power consumption is reduced. Output Enable (OE) The Output Enable input controls the data output buffers and is used to initiate read operations ...
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... Page Write Operation The page write feature of the X28HC64 allows the entire memory to be written in 0.25 seconds. Page write allows two to sixty-four bytes of data to be consecutively written to the X28HC64 prior to the commencement of the internal programming cycle. The host can fetch data ...
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X28HC64 DATA POLLING I/O 7 Figure 2. DATA Polling Bus Sequence LAST WRITE I – Figure 3. DATA Polling Software Flow WRITE DATA WRITES COMPLETE? YES SAVE LAST DATA ...
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X28HC64 THE TOGGLE BIT I/O 6 Figure 4. Toggle Bit Bus Sequence LAST WRITE I Beginning and ending state of I/O 6 will vary. Figure 5. Toggle Bit Software Flow LAST WRITE LOAD ACCUM ...
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X28HC64 HARDWARE DATA PROTECTION The X28HC64 provides two hardware features that protect nonvolatile data from inadvertent writes. • Default V Sense—All write functions are inhibited CC when typically. CC • Write Inhibit—Holding either OE LOW, WE HIGH, ...
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X28HC64 SOFTWARE DATA PROTECTION Figure 6. Timing Sequence—Byte or Page Write DATA AA ADDR 1555 CE WE Figure 7. Write Sequence for Software Data Protection WRITE DATA AA TO ADDRESS 1555 WRITE DATA 55 TO ADDRESS 0AAA ...
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X28HC64 RESETTING SOFTWARE DATA PROTECTION Figure 8. Reset Software Data Protection Timing Sequence Vcc DATA AA 55 ADDR 1555 0AAA CE WE Figure 9. Software Sequence to Deactivate Software Data Protection WRITE DATA AA TO ADDRESS 1555 WRITE DATA 55 ...
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... Because the X28HC64 has two power modes, standby and active, proper decoupling of the memory array is of Normalized I (RD) by Temperature CC Over Frequency 1 ...
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X28HC64 ABSOLUTE MAXIMUM RATINGS* Temperature under Bias X28HC64 ..................................... – +85 C X28HC64I, X28HC64M ............. – +135 C Storage Temperature ....................... – +150 C Voltage on any Pin with Respect ....................................... ...
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X28HC64 ENDURANCE AND DATA RETENTION Parameter Minimum Endurance Data Retention POWER-UP TIMING Symbol PUR (3) t Power-up to Read Operation (3) t Power-up to Write Operation PUW CAPACITANCE 1MHz Symbol (3) C ...
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X28HC64 A.C. CHARACTERISTICS (Over the recommended operating conditions unless otherwise specified.) Read Cycle Limits Symbol Parameter t Read Cycle Time RC t Chip Enable Access Time CE t Address Access Time AA t Output Enable Access Time OE CE LOW ...
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X28HC64 WRITE CYCLE LIMITS Symbol Parameter (5) 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 ...
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... Notes: (7) Between successive byte writes within a page write operation, OE can be strobed LOW: e.g. this can be done with CE and WE HIGH to fetch data from another memory device within the system for the next write; or with WE HIGH and CE LOW effectively performing a polling operation. ...
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X28HC64 DATA Polling Timing Diagram (9) ADDRESS I/O 7 Toggle Bit Timing Diagram ( OEH OE HIGH Z I I/O 6 beginning and ending state will vary, ...
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X28HC64 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 ...
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X28HC64 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 ...
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X28HC64 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 ...
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X28HC64 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 ...
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X28HC64 PACKAGING INFORMATION 32-PAD CERAMIC LEADLESS CHIP CARRIER PACKAGE TYPE E 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) ...
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X28HC64 PACKAGING INFORMATION 28-LEAD CERAMIC PIN GRID ARRAY PACKAGE TYPE K TYP. 0.100 ALL LEADS 0.660 (16.76) 0.640 (16.26) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS ...
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X28HC64 PACKAGING INFORMATION 0.740 (18.80) MAX. 0.006 (0.15) 0.003 (0.08) TYP. 0.300 2 PLCS. NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 28-LEAD CERAMIC FLAT PACK PIN 1 INDEX 1 0.440 (11.18) MAX. 0.370 (9.40) 0.250 (6.35) 0.180 (4.57) ...
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X28HC64 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 ...
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X28HC64 ORDERING INFORMATION X28HC64 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 ...