Cypress Semiconductor STK22C48 Uživatelský manuál

STK22C4816-Kbit (2 K × 8) AutoStore™ nvSRAMCypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600Document Num

STK22C48Document Number: 001-51000 Rev. *E Page 10 of 17SRAM Write CycleParameterDescription25 ns 45 ns UnitMin Max Min MaxCypress ParameterAlttWCtA

STK22C48Document Number: 001-51000 Rev. *E Page 11 of 17AutoStore or Power Up RECALLParameter Alt DescriptionSTK22C48UnitMin MaxtHRECALL [14]tRESTORE

STK22C48Document Number: 001-51000 Rev. *E Page 12 of 17Hardware STORE CycleParameter Alt DescriptionSTK22C48UnitMin MaxtDHSB [19, 20]tRECOVER, tHHQX

STK22C48Document Number: 001-51000 Rev. *E Page 13 of 17Ordering Code DefinitionsOrdering InformationThese parts are not recommended for new designs.

STK22C48Document Number: 001-51000 Rev. *E Page 14 of 17Package DiagramsFigure 13. 28-Pin (300 mil) SOIC (51-85026)Figure 14. 28-Pin (330 mil) SOIC

STK22C48Document Number: 001-51000 Rev. *E Page 15 of 17Document ConventionsAcronyms Units of MeasureAcronym DescriptionCMOS Complementary metal oxid

STK22C48Document Number: 001-51000 Rev. *E Page 16 of 17Document History PageDocument Title: STK22C48 16-Kbit (2 K × 8) AutoStore™ nvSRAMDocument Num

Document Number: 001-51000 Rev. *E Revised February 23, 2012 Page 17 of 17All products and company names mentioned in this document may be the tradem

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STK22C48Document Number: 001-51000 Rev. *E Page 2 of 17ContentsPin Configurations ... 3Device

STK22C48Document Number: 001-51000 Rev. *E Page 3 of 17Pin ConfigurationsFigure 1. Pin Diagram - 28-pin SOICTable 1. Pin DefinitionsPin Name Alt IO

STK22C48Document Number: 001-51000 Rev. *E Page 4 of 17Device OperationThe STK22C48 nvSRAM is made up of two functionalcomponents paired in the same

STK22C48Document Number: 001-51000 Rev. *E Page 5 of 17Figure 3. AutoStore Inhibit ModeHardware STORE (HSB) OperationThe STK22C48 provides the HSB p

STK22C48Document Number: 001-51000 Rev. *E Page 6 of 17Preventing StoreThe STORE function is disabled by holding HSB high with adriver capable of sou

STK22C48Document Number: 001-51000 Rev. *E Page 7 of 17Maximum RatingsExceeding maximum ratings may shorten the useful life of the device. These user

STK22C48Document Number: 001-51000 Rev. *E Page 8 of 17CapacitanceIn the following table, the capacitance parameters are listed.[5]Parameter Descript

STK22C48Document Number: 001-51000 Rev. *E Page 9 of 17AC Switching Characteristics SRAM Read CycleParameterDescription25 ns 45 ns UnitMin Max Min M