STK16C88-WF45 Infineon

STK16C88 256-Kbit (32 K 8) AutoStore+ nvSRAM 256-Kbit (32 K 8) AutoStore+ nvSRAM Features Functional Description 25 ns and 45 ns access times The Cypress STK16C88 is a 256 Kb fast static RAM with a nonvolatile element in each memory cell. The embedded Directly replaces battery-backed SRAM modules such as nonvolatile elements incorporate QuantumTrap technology Dallas/Maxim DS1230 AB producing the worlds most reliable nonvolatile memory. The SRAM provides unlimited read and write cycles, while Automatic nonvolatile STORE on power loss independent, nonvolatile data resides in the highly reliable Nonvolatile STORE under Software control QuantumTrap cell. Data transfers from the SRAM to the nonvolatile elements (the STORE operation) takes place Automatic RECALL to SRAM on power up automatically at power down. On power up, data is restored to Unlimited Read/Write endurance the SRAM (the RECALL operation) from the nonvolatile memory. Both the STORE and RECALL operations are also available Unlimited RECALL cycles under software control. 1,000,000 STORE cycles 100 year data retention Single 5 V + 10% power supply Commercial and Industrial Temperatures 28-pin (600 mil) PDIP package RoHS compliance Logic Block Diagram Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 001-50595 Rev. *C Revised February 27, 2012 Not recommended for new designs. In production to support ongoing production programs.STK16C88 Contents Pin Configurations ...........................................................3 AC Test Loads .................................................................. 8 Pin Definitions ..................................................................3 AC Test Conditions .......................................................... 8 Device Operation ..............................................................4 AC Switching Characteristics SRAM Read Cycle ...... 9 SRAM Read ................................................................4 Switching Waveforms SRAM Read Cycle ................... 9 SRAM Write .................................................................4 AC Switching Characteristics SRAM Write Cycle .... 10 AutoStore+ Operation ..................................................4 AutoStore or Power Up RECALL .................................. 11 Hardware RECALL (Power Up) ...................................4 Software Controlled STORE/RECALL Cycle ................ 12 Software STORE .........................................................4 Ordering Information ...................................................... 13 Software RECALL .......................................................4 Ordering Code Definitions ......................................... 13 Hardware Protect ........................................................4 Package Diagram ............................................................ 14 Noise Considerations ..................................................5 Acronyms ........................................................................15 Low Average Active Power .........................................5 Document Conventions ................................................. 15 Best Practices ...................................................................5 Units of Measure ....................................................... 15 Maximum Ratings .............................................................7 Document History Page ................................................. 16 Operating Range ...............................................................7 Sales, Solutions and Legal Information ....................... 17 DC Electrical Characteristics ..........................................7 Worldwide Sales and Design Support ....................... 17 Data Retention and Endurance .......................................8 Products ....................................................................17 Capacitance ......................................................................8 PSoC Solutions ......................................................... 17 Thermal Resistance ..........................................................8 Document Number: 001-50595 Rev. *C Page 2 of 17 Not recommended for new designs. In production to support ongoing production programs.