STK14C88 32 K x 8 AutoStore nvSRAM Features Description 25 ns, 35 ns, and 45 ns read access and R/W cycle time The Cypress STK14C88 is a 256 Kb fast static RAM with a nonvolatile Quantum Trap storage element included with each Unlimited read/write endurance memory cell. Automatic nonvolatile STORE on power loss The SRAM provides the fast access and cycle times, ease of use, and unlimited read and write endurance of a normal SRAM. Nonvolatile STORE under hardware or software control Data automatically transfers to the nonvolatile storage cells Automatic RECALL to SRAM on power up when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL Unlimited RECALL cycles operation). Both STORE and RECALL operations are also 1-Million STORE cycles available under software control. 100-year nonvolatile data retention The Cypress nvSRAM is the first monolithic nonvolatile memory to offer unlimited writes and reads. It is the highest performance, Single 5 V + 10% power supply most reliable nonvolatile memory available. Commercial, industrial, military temperatures For a complete list of related documentation, click here. 32-Pin 300 mil SOIC (RoHS-compliant) 32-Pin CDIP and LCC packages Logic Block Diagram V V CCX CAP Quantum Trap 512 x 512 POWER CONTROL A 5 A STORE 6 A 7 STORE/ A STATIC RAM 8 RECALL HSB RECALL A ARRAY 9 CONTROL 512 x 512 A 11 A 12 A 13 A 14 SOFTWARE A - A 0 13 DETECT DQ 0 COLUMN I/O DQ 1 COLUMN DEC DQ 2 DQ 3 DQ 4 DQ 5 A A A A A A 0 1 2 3 4 10 DQ G 6 DQ 7 E W Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-52038 Rev. *F Revised March 31, 2015 INPUT BUFFERS ROW DECODERSTK14C88 Contents Pin Configurations ........................................................... 3 AutoStore Mode.............................................................. 11 Pin Descriptions ............................................................... 3 AutoStore INHIBIT Mode................................................ 12 Absolute Maximum Ratings ............................................ 4 HSB Operation................................................................ 12 DC Characteristics ........................................................... 4 Best Practices................................................................. 13 AC Test Conditions .......................................................... 5 Preventing STORES ....................................................... 13 Capacitance ...................................................................... 5 Hardware Protect............................................................ 13 SRAM Read Cycles 1 and 2 ......................................... 6 Low Average Active Power............................................ 13 SRAM Write Cycle 1 and 2 ........................................... 7 Ordering Information...................................................... 14 Hardware Mode Selection................................................ 8 Commercial and Industrial Ordering Information....... 14 Hardware STORE Cycle ................................................... 8 Military Ordering Information..................................... 15 AutoStore/Power up RECALL ......................................... 9 Package Diagrams.......................................................... 16 Software STORE/RECALL Mode Selection .................. 10 Acronyms........................................................................ 19 Software-Controlled STORE/RECALL Cycle................ 10 Document Conventions ................................................. 19 nvSRAM Operation......................................................... 11 Units of Measure ....................................................... 19 Noise Considerations..................................................... 11 Document History Page ................................................ 20 SRAM Read ..................................................................... 11 Sales, Solutions, and Legal Information ...................... 21 SRAM Write ..................................................................... 11 Worldwide Sales and Design Support....................... 21 Power Up RECALL ......................................................... 11 Products .................................................................... 21 Software Nonvolatile STORE......................................... 11 PSoC Solutions ......................................................... 21 Software Nonvolatile RECALL ...................................... 11 Document Number: 001-52038 Rev. *F Page 2 of 21