Cypress AutoStore STK17T88 Especificações

STK17T8832K x 8 AutoStore nvSRAM withReal Time ClockCypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600Doc

STK17T88Document Number: 001-52040 Rev. *C Page 10 of 24Figure 10. Software Store/Recall Cycle: E CONTROLLED[13]Software-Controlled STORE/RECALL Cyc

STK17T88Document Number: 001-52040 Rev. *C Page 11 of 24Hardware STORE CycleFigure 11. Hardware STORE CycleSoft Sequence CommandsFigure 12. Soft Se

STK17T88Document Number: 001-52040 Rev. *C Page 12 of 24Mode SelectionE W G A14-A0Mode I/O Power NotesH X X X Not Selected Output High Z StandbyL H L

STK17T88Document Number: 001-52040 Rev. *C Page 13 of 24nvSRAM OperationThe STK17T88 nvSRAM is made up of two functional compo-nents paired in the sa

STK17T88Document Number: 001-52040 Rev. *C Page 14 of 24Software STOREData can be transferred from the SRAM to the nonvolatilememory by a software ad

STK17T88Document Number: 001-52040 Rev. *C Page 15 of 24Real Time ClockThe clock registers maintain time up to 9,999 years inone-second increments. T

STK17T88Document Number: 001-52040 Rev. *C Page 16 of 24If a binary ‘1’ is loaded into the register, only the first 2 minutesof the 64 minute cycle i

STK17T88Document Number: 001-52040 Rev. *C Page 17 of 24Figure 14. Interrupt Block DiagramInterrupt RegisterWatchdog Interrupt Enable (WIE). When se

STK17T88Document Number: 001-52040 Rev. *C Page 18 of 24RTC Register Map0 - Not implemented, reserved for future use.Default Settings of nonvolatile

STK17T88Document Number: 001-52040 Rev. *C Page 19 of 24Register Map Detail0x7FFFReal Time Clock – Years D7 D6 D5 D4 D3 D2 D1 D010s Years YearsContai

STK17T88Document Number: 001-52040 Rev. *C Page 2 of 24ContentsFeatures...

STK17T88Document Number: 001-52040 Rev. *C Page 20 of 240x7FF7Watchdog TimerD7 D6 D5 D4 D3 D2 D1 D0WDS WDW WDTWDS Watchdog Strobe. Setting this bit t

STK17T88Document Number: 001-52040 Rev. *C Page 21 of 240x7FF2Alarm – SecondsD7 D6 D5 D4 D3 D2 D1 D0M 10s Alarm Seconds Alarm SecondsContains the ala

STK17T88Document Number: 001-52040 Rev. *C Page 22 of 24Ordering CodesThese parts are not recommended for new designs.Speed:25 - 25 ns45 - 45 nsPacka

STK17T88Document Number: 001-52040 Rev. *C Page 23 of 24Package DiagramFigure 15. 48-Pin SSOP (51-85061)51-85061-*CNot Recommended for New Designs[+

Document Number: 001-52040 Rev. *C Revised November 25, 2009 Page 24 of 24All products and company names mentioned in this document may be the tradem

STK17T88Document Number: 001-52040 Rev. *C Page 3 of 24Pin ConfigurationsFigure 1. 48-Pin SSOPVSSA14A12A7A6DQ0DQ1VCCDQ2A3A2A1VCAPA13A8A9A11A10DQ7DQ6

STK17T88Document Number: 001-52040 Rev. *C Page 4 of 24Absolute Maximum RatingsVoltage on Input Relative to Ground...–0.5V to 4.1VVolta

STK17T88Document Number: 001-52040 Rev. *C Page 5 of 24AC Test ConditionsInput Pulse Levels ...0V to

STK17T88Document Number: 001-52040 Rev. *C Page 6 of 24RTC DC CharacteristicsFigure 4. RTC Component ConfigurationSymbol ParameterCommercial Industr

STK17T88Document Number: 001-52040 Rev. *C Page 7 of 24SRAM READ Cycles #1 and #2Figure 5. SRAM READ Cycle #1: Address Controlled[3,4,6]Figure 6. S

STK17T88Document Number: 001-52040 Rev. *C Page 8 of 24SRAM WRITE Cycles #1 and #2Figure 7. SRAM WRITE Cycle #1: W Controlled[7, 8]Figure 8. SRAM W

STK17T88Document Number: 001-52040 Rev. *C Page 9 of 24AutoStore/Power Up RECALLFigure 9. AutoStore Power Up RECALLNotes9. tHRECALL starts from the