Cypress CY14B256K manual Ordering Information

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CY14B256K

Ordering Information

All the below mentioned parts are Pb-free. Contact your local Cypress sales representative for availability of these parts.

Speed	Ordering Code	Package	Package Type	Operating
(ns)		Diagram	Package Type	Range
(ns)		Diagram		Range
25	CY14B256K-SP25XC	51-85061	48-pin SSOP	Commercial

	CY14B256K-SP25XCT

	CY14B256K-SP25XI	51-85061	48-pin SSOP	Industrial

	CY14B256K-SP25XIT

35	CY14B256K-SP35XC	51-85061	48-pin SSOP	Commercial

	CY14B256K-SP35XCT

	CY14B256K-SP35XI	51-85061	48-pin SSOP	Industrial

	CY14B256K-SP35XIT

45	CY14B256K-SP45XC	51-85061	48-pin SSOP	Commercial

	CY14B256K-SP45XCT

	CY14B256K-SP45XI	51-85061	48-pin SSOP	Industrial

	CY14B256K-SP45XIT

Document Number: 001-06431 Rev. *H

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Contents Features Logic Block DiagramFunctional Description Cypress Semiconductor Corporation 198 Champion CourtPin Configurations Pin DefinitionsDevice Operation AutoStore OperationHardware Store HSB Operation Hardware Recall Power Up Software StoreSoftware Recall Data ProtectionLow Average Active Power Best Practices Current versus Cycle TimeMode Selection A13-A0 Power Real Time Clock Operation Alarm Watchdog TimerCalibrating the Clock Power Monitor InterruptsInterrupt Register Flags RegisterInterrupt Block Diagram RTC Register Map5 BCD Format Data Function/Range WDF OscfRegister Map Detail Time Keeping Years 0x7FFF 10s Years Time Keeping Months 0x7FFE 10s MonthDate Time Keeping Hours 0x7FFB Time Keeping Minutes 0x7FFAAlarm Day 0x7FF5 Register Map Detail Calibration/Control 0X7FF80x7FF7 Interrupt Status/Control 0x7FF6Register Map Detail Alarm Hours 0x7FF4 10s Alarm Hours To ignore the hours value Alarm Minutes 0x7FF3Alarm Seconds 0x7FF2 When the Flags register is read or on power-upDC Electrical Characteristics Maximum RatingsOperating Range RangeData Retention and Endurance CapacitanceThermal Resistance AC Test ConditionsAC Switching Characteristics Parameter Sram Read CycleParameter Cypress Alt Description 25 ns 35 ns 45 ns Min Max Unit Sram Write CycleAutoStore or Power Up Recall Parameter Description CY14B256K Unit Min MaxSoftware Controlled STORE/RECALL Cycles 20 Parameter Alt Description 25 ns 35 ns 45 ns Unit Min MaxSoft Sequence Commands Hardware Store CycleRTC Characteristics Inputs and Outputs Mode PowerTruth Table For Sram Operations Part Numbering Nomenclature CY 14 B 256 K SP 25 X C T Ordering Information Package Diagrams Pin Shrunk Small Outline PackageDocument History Orig. of Change Submission Description of Change DateUpdated Features section Updated Reading the clock, Backup Power, StoppingStarting the Oscillator and Alarm descriptions under RTC Added default values to RTC Register Map tableSales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB