Ordering Information

CY14B256K

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

Page 24 of 28

[+] Feedback

Page 24

Image 24

Cypress CY14B256K manual Ordering Information

Contents

Features Logic Block DiagramFunctional Description Cypress Semiconductor Corporation 198 Champion Court Pin Configurations Pin Definitions Device Operation AutoStore OperationHardware Store HSB Operation Hardware Recall Power Up Software StoreSoftware Recall Data Protection Low Average Active Power Best Practices Current versus Cycle Time Mode Selection A13-A0 Power Real Time Clock Operation Alarm Watchdog TimerCalibrating the Clock Power Monitor InterruptsInterrupt Register Flags Register Interrupt Block Diagram RTC Register Map5 BCD Format Data Function/Range WDF Oscf Register Map Detail Time Keeping Years 0x7FFF 10s Years Time Keeping Months 0x7FFE 10s MonthDate Time Keeping Hours 0x7FFB Time Keeping Minutes 0x7FFA Alarm Day 0x7FF5 Register Map Detail Calibration/Control 0X7FF80x7FF7 Interrupt Status/Control 0x7FF6 Register 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-up DC Electrical Characteristics Maximum RatingsOperating Range Range Data Retention and Endurance CapacitanceThermal Resistance AC Test Conditions AC Switching Characteristics Parameter Sram Read Cycle Parameter Cypress Alt Description 25 ns 35 ns 45 ns Min Max Unit Sram Write Cycle AutoStore or Power Up Recall Parameter Description CY14B256K Unit Min Max Software Controlled STORE/RECALL Cycles 20 Parameter Alt Description 25 ns 35 ns 45 ns Unit Min Max Soft Sequence Commands Hardware Store Cycle RTC 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 Package Document History Orig. of Change Submission Description of Change Date Updated Features section Updated Reading the clock, Backup Power, StoppingStarting the Oscillator and Alarm descriptions under RTC Added default values to RTC Register Map table Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB