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STK15C68-NF25I Datasheet(PDF) 1 Page - Simtek Corporation |
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STK15C68-NF25I Datasheet(HTML) 1 Page - Simtek Corporation |
1 / 14 page STK15C88 1 This product conforms to specifications per the terms of Simtek standard warranty. The product has completed Simtek internal qualification testing and has reached production status. February, 2007 Document Control #ML0016 Rev 0.3 FEATURES • 25, 45 ns Read Access & R/W Cycle Time • Unlimited Read/Write Endurance • Pin compatible with industry standard SRAMs • Automatic Non-volatile STORE on Power Loss • Automatic RECALL to SRAM on Power Up • Non-Volatile STORE or RECALL under Software Control • Unlimited RECALL Cycles • 1 Million Store Cycles • 100-Year Non-volatile Data Retention • Single 5V ± 10% Power Supply • Commercial and Industrial Temperatures • 28-pin 300-mil and 330 mil SOIC Packages (RoHS-Compliant) DESCRIPTION The Simtek STK15C88 is a 256Kb fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell. The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM. Data transfers automatically to the non-volatile stor- age cells when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control. PowerStore nvSRAM products depend on the intrin- sic system capacitance to maintain system power long enough for an automatic store on power loss. If the power ramp from 5 volts to 3.6 volts is faster than 10 ms, consider our 14C88 or 16C88 for more reliable operation. The Simtek nvSRAM is the first monolithic non-vola- tile memory to offer unlimited writes and reads. It is the highest performance, most reliable non-volatile memory available. BLOCK DIAGRAM COLUMN DEC G E W COLUMN I/O SOFTWARE DETECT A13 – A0 QUANTUM TRAP 512 x 512 STATIC RAM ARRAY 512 X 512 STORE RECALL DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 A5 A6 A7 A8 A9 A11 A12 A13 A14 STORE/ RECALL CONTROL A0 A1 A2 A3 A4 A10 32Kx8 PowerStore nvSRAM |
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