Datenblatt-Suchmaschine für elektronische Bauteile |
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STK16CA8-WF45 Datenblatt(PDF) 1 Page - Simtek Corporation |
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STK16CA8-WF45 Datenblatt(HTML) 1 Page - Simtek Corporation |
1 / 12 page September 2003 1 Document Control # ML0023 rev 0.1 PIN CONFIGURATIONS PIN NAMES A0 - A16 Address Inputs W Write Enable DQ0 - DQ7 Data In/Out E Chip Enable G Output Enable VCC Power (+ 3V) VSS Ground STK16CA8 128K x 8 AutoStorePlus™nvSRAM QuantumTrap™ CMOS Nonvolatile Static RAM Preliminary FEATURES • 25ns, 35ns and 45ns Access Times • Directly Replaces 128K x 8 Static RAM, Bat- tery-Backed RAM or EEPROM • Transparent Data Save on Power Down • STORE to QuantumTrap™ Nonvolatile Ele- ments is Initiated by Software or AutoStore- Plus™on Power Down • RECALL to SRAM Initiated by Software or Power Restore • 5mA Typical I CC at 200ns Cycle Time • Unlimited READ and WRITE Cycles to SRAM • 100-Year Data Retention to Quantum Trap • Single 3V +20%, -10% Operation • Commercial and Industrial Temperatures • 32-Pin DIP Package DESCRIPTION The Simtek STK16CA8 is a fast static RAM with a nonvolatile element in each static memory cell. The embedded nonvolatile elements incorporate Simtek’s QuantumTrap™ technology producing the world’s most reliable nonvolatile memory. The SRAM provides unlimited read and write cycles, while inde- pendent, nonvolatile data resides in the nonvolatile elements. Data transfers from the SRAM to the non- volatile elements (the STORE operation) can take place automatically on power down or under soft- ware control. An internal capacitor guarantees the STORE operation, even under extreme power-down slew rates or loss of power from “hot swapping”. Transfers from the nonvolatile elements to the SRAM (the RECALL operation) take place automatically on restoration of power. Initiation of STORE and RECALL cycles can also be controlled by entering control sequences on the SRAM inputs. The STK16CA8 is pin-compatible with 128k x 8 SRAMs and battery- backed SRAMs, allowing direct substitution while providing superior performance. BLOCK DIAGRAM COLUMN I/O COLUMN DEC STATIC RAM ARRAY 1024 x 1024 Quantum Trap 1024 x 1024 STORE/ RECALL CONTROL STORE RECALL POWER CONTROL A5 A6 A7 A8 A9 A12 A13 A14 A15 DQ0 DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 SOFTWARE DETECT G E W VCC A0 - A15 A16 A0 A1 A2 A3 A4 A10 A11 A13 A8 A9 A11 NC A16 A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 VSS VCC A15 W A10 E DQ7 DQ6 DQ5 DQ4 DQ3 NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 A14 VCC A15 G A10 E DQ7 DQ6 DQ5 DQ4 DQ3 NC |
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