STK12C68-WF25I Infineon

STK12C68 64 Kbit (8 K x 8) AutoStore nvSRAM Features Functional Description 25 ns, 35 ns, and 45 ns access times The Cypress STK12C68 is a fast static RAM with a nonvolatile element in each memory cell. The embedded nonvolatile Hands off automatic STORE on power-down with external elements incorporate QuantumTrap technology producing the 68 F capacitor worlds most reliable nonvolatile memory. The SRAM provides unlimited read and write cycles, while independent nonvolatile STORE to QuantumTrap nonvolatile elements is initiated by data resides in the highly reliable QuantumTrap cell. Data software, hardware, or AutoStore on power-down transfers from the SRAM to the nonvolatile elements (the RECALL to SRAM initiated by software or power-up STORE operation) takes place automatically at power-down. On power-up, data is restored to the SRAM (the RECALL operation) Unlimited read, write, and recall cycles from the nonvolatile memory. Both the STORE and RECALL 1,000,000 STORE cycles to QuantumTrap operations are also available under software control. A hardware STORE is initiated with the HSB pin. 100 year data retention to QuantumTrap Single 5 V + 10% operation Commercial and industrial temperatures 228-pin (330 mil) SOIC, 28-pin (300 mil) PDIP, 28-pin (600 mil) PDIP packages 28-pin (300 mil) CDIP and 28-pad (350 mil) LCC packages RoHS compliance Logic Block Diagram V V CC CAP Quantum Trap 128 X 512 A 5 POWER STORE CONTROL A 6 A 7 RECALL STORE/ STATIC RAM A HSB RECALL 8 ARRAY CONTROL A 128 X 512 9 A 11 SOFTWARE A 12 A 0 - A DETECT 12 DQ COLUMN I/O 0 DQ 1 COLUMN DEC DQ 2 DQ 3 DQ 4 DQ A A A A A A 5 0 1 2 3 4 10 DQ 6 DQ 7 OE CE WE Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-51027 Rev. *F Revised October 12, 2011 INPUT BUFFERS ROW DECODER Not Recommended for New Designs. In production to support ongoing production programs only. STK12C68 Contents Pin Configurations ...........................................................3 Data Retention and Endurance ....................................... 9 Pin Definitions ..................................................................3 Capacitance ......................................................................9 Device Operation ..............................................................4 Thermal Resistance .......................................................... 9 SRAM Read .......................................................................4 AC Test Conditions .......................................................... 9 SRAM Write .......................................................................4 AC Switching Characteristics ....................................... 10 AutoStore Operation ........................................................4 SRAM Read Cycle .................................................... 10 AutoStore Inhibit Mode ....................................................5 SRAM Write Cycle ..................................................... 11 Hardware STORE (HSB) Operation .................................5 AutoStore or Power-up RECALL ................................... 12 Hardware RECALL (Power-up) ........................................5 Software Controlled STORE/RECALL Cycle ................ 13 Software STORE ...............................................................5 Hardware STORE Cycle ................................................. 14 Software RECALL .............................................................6 Switching Waveform ...................................................... 14 Data Protection .................................................................6 Part Numbering Nomenclature ...................................... 15 Noise Considerations .......................................................6 Ordering Information ...................................................... 15 Hardware Protect ..............................................................6 Package Diagrams .......................................................... 16 Low Average Active Power ..............................................6 Document History Page ................................................. 21 Preventing Store ...............................................................6 Sales, Solutions, and Legal Information ...................... 22 Best Practices ...................................................................7 Worldwide Sales and Design Support ....................... 22 Maximum Ratings .............................................................8 Products ....................................................................22 Operating Range ...............................................................8 PSoC Solutions ......................................................... 22 DC Electrical Characteristics ..........................................8 Document Number: 001-51027 Rev. *F Page 2 of 22 Not Recommended for New Designs. In production to support ongoing production programs only.