Cypress CY14B101K User Manual

CY14B101K1 Mbit (128K x 8) nvSRAM With Real Time ClockCypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600D

CY14B101KDocument Number: 001-06401 Rev. *I Page 10 of 28Figure 5. Interrupt Block DiagramFigure 6. RTC Recommended Component ConfigurationWDF - Wat

CY14B101KDocument Number: 001-06401 Rev. *I Page 11 of 28Table 4. RTC Register Map[5, 6]RegisterBCD Format Data [5]Function/RangeD7 D6 D5 D4 D3 D2 D1

CY14B101KDocument Number: 001-06401 Rev. *I Page 12 of 28Table 5. Register Map Detail0x1FFFFTime Keeping - YearsD7 D6 D5 D4 D3 D2 D1 D010s Years Year

CY14B101KDocument Number: 001-06401 Rev. *I Page 13 of 280X1FFF8Calibration/ControlD7 D6 D5 D4 D3 D2 D1 D0OSCEN 0 CalibrationSignCalibrationOSCEN Osci

CY14B101KDocument Number: 001-06401 Rev. *I Page 14 of 280x1FFF4Alarm - HoursD7 D6 D5 D4 D3 D2 D1 D0M 10s Alarm Hours Alarm HoursContains the alarm va

CY14B101KDocument Number: 001-06401 Rev. *I Page 15 of 28Maximum RatingsExceeding maximum ratings may impair the useful life of thedevice. These user

CY14B101KDocument Number: 001-06401 Rev. *I Page 16 of 28Data Retention and EnduranceParameter Description Min UnitDATARData Retention 20 YearsNVCNonv

CY14B101KDocument Number: 001-06401 Rev. *I Page 17 of 28AC Switching Characteristics ParameterDescription25 ns 35 ns 45 nsUnitMin Max Min Max Min Max

CY14B101KDocument Number: 001-06401 Rev. *I Page 18 of 28AC Switching Characteristics (continued)ParameterDescription25 ns 35 ns 45 nsUnitMin Max Min

CY14B101KDocument Number: 001-06401 Rev. *I Page 19 of 28AutoStore or Power Up RECALLParameter DescriptionCY14B101KUnitMin MaxtHRECALL [18]Power Up RE

CY14B101KDocument Number: 001-06401 Rev. *I Page 2 of 28Pin ConfigurationsFigure 1. 48-Pin SSOPTable 1. Pin DefinitionsPin Name Alt IO Type Descript

CY14B101KDocument Number: 001-06401 Rev. *I Page 20 of 28Software Controlled STORE/RECALL Cycles [21, 22]ParameterAlt. ParameterDescription25 ns 35 n

CY14B101KDocument Number: 001-06401 Rev. *I Page 21 of 28Hardware STORE CycleParameterAlt. ParameterDescriptionCY14B101KUnitMin MaxtDELAY [25]Time All

CY14B101KDocument Number: 001-06401 Rev. *I Page 22 of 28RTC CharacteristicsParameter Description Test Conditions Min Max UnitIBAK [26]RTC Backup Curr

CY14B101KDocument Number: 001-06401 Rev. *I Page 23 of 28Part Numbering NomenclatureOption:T - Tape and ReelBlank - Std.Speed:25 - 25 nsData Bus:K - x

CY14B101KDocument Number: 001-06401 Rev. *I Page 24 of 28Ordering InformationAll the below mentioned parts are Pb-free. Please contact your local Cypr

CY14B101KDocument Number: 001-06401 Rev. *I Page 25 of 28Package DiagramsFigure 17. 48-Pin Shrunk Small Outline Package (51-85061)51-85061-*C[+] Feed

CY14B101KDocument Number: 001-06401 Rev. *I Page 26 of 28Document History PageDocument Title: CY14B101K 1 Mbit (128K x 8) nvSRAM With Real Time Clock

CY14B101KDocument Number: 001-06401 Rev. *I Page 27 of 28*I 2663934 GVCH/PYRS 02/24/09 Updated FeaturesUpdated pin definition of WE Removed AutoStore

Document Number: 001-06401 Rev. *I Revised February 24, 2009 Page 28 of 28AutoStore and QuantumTrap are registered trademarks of Cypress Semiconductor

CY14B101KDocument Number: 001-06401 Rev. *I Page 3 of 28Device OperationThe CY14B101K nvSRAM consists of two functional compo-nents paired in the same

CY14B101KDocument Number: 001-06401 Rev. *I Page 4 of 28SRAM READ and WRITE operations that are in progress whenHSB is driven LOW by any means are giv

CY14B101KDocument Number: 001-06401 Rev. *I Page 5 of 28Low Average Active PowerCMOS technology provides the CY14B101K the benefit ofdrawing significa

CY14B101KDocument Number: 001-06401 Rev. *I Page 6 of 28Table 2. Mode SelectionCE WE OEA15 – A0 Mode IO PowerH X X X Not Selected Output High Z Stand

CY14B101KDocument Number: 001-06401 Rev. *I Page 7 of 28Real Time Clock OperationnvTIME OperationThe CY14B101K offers internal registers that contain

CY14B101KDocument Number: 001-06401 Rev. *I Page 8 of 28Calibrating the ClockThe RTC is driven by a quartz controlled oscillator with a nominalfrequen

CY14B101KDocument Number: 001-06401 Rev. *I Page 9 of 28Power MonitorThe CY14B101K provides a power management scheme withpower fail interrupt capabil