Cypress CY14B101K manual Mode Selection A15 A0 Power, Read Sram, Write Sram, Store, Recall

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CY14B101K

Table 2. Mode Selection

 

 

 

 

 

 

 

 

 

A15 – A0

Mode

IO

Power

 

CE

WE

OE

 

H

 

 

X

 

 

X

 

X

Not Selected

Output High Z

Standby

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

H

 

 

L

 

X

READ SRAM

Output Data

Active

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

L

 

 

X

 

X

WRITE SRAM

Input Data

Active

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

H

 

 

L

 

0x4E38

Read SRAM

Output Data

Active ICC2[1, 2, 3]

 

 

 

 

 

 

 

 

 

0xB1C7

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x83E0

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x7C1F

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x703F

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x8FC0

Nonvolatile

Output High Z

 

 

 

 

 

 

 

 

 

 

 

STORE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L

 

 

H

 

 

L

 

0x4E38

Read SRAM

Output Data

Active[1, 2, 3]

 

 

 

 

 

 

 

 

 

0xB1C7

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x83E0

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x7C1F

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x703F

Read SRAM

Output Data

 

 

 

 

 

 

 

 

 

 

0x4C63

Nonvolatile

Output High Z

 

 

 

 

 

 

 

 

 

 

 

RECALL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Notes

1.The six consecutive address locations are in the order listed. WE is HIGH during all six cycles to enable a nonvolatile cycle.

2.While there are 17 address lines on the CY14B101K, only the lower 16 lines are used to control software modes.

3.O state depends on the state of OE. The IO table shown is based on OE Low.

Document Number: 001-06401 Rev. *I

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Contents Functional Description FeaturesLogic Block Diagram Cypress Semiconductor Corporation 198 Champion CourtPower Supply Inputs to the Device Pin ConfigurationsOutput Enable, Active LOW. The active low Pin DefinitionsDevice Operation AutoStore OperationHardware Store HSB Operation Software Recall Hardware Recall Power UpSoftware Store Data ProtectionLow Average Active Power Best Practices Current versus Cycle TimeWrite Sram Mode Selection A15 A0 PowerRead Sram StoreReal Time Clock Operation Alarm Watchdog TimerCalibrating the Clock Interrupt Register Power MonitorInterrupts Flags RegisterInterrupt Block Diagram Recommended ValuesRTC Register Map5 BCD Format Data Function/Range WDF OscfDate Time Keeping Hours 0x1FFFB Register Map Detail Time Keeping Years 0x1FFFF 10s YearsTime Keeping Months 0x1FFFE 10s Month Time Keeping Minutes 0x1FFFA0x1FFF7 Alarm Day 0x1FFF5Register Map Detail Calibration/Control Interrupt Status/Control 0x1FFF6Register Map Detail Alarm Hours 0x1FFF4 10s Alarm Hours To ignore the hours value Alarm Minutes 0x1FFF3When the Flags register is read or on power-up Maximum Ratings DC Electrical CharacteristicsRange Ambient Temperature Operating RangeThermal Resistance Data Retention and EnduranceCapacitance AC Test ConditionsAC Switching Characteristics Parameter Sram Read CycleMin Max Parameter Sram Write CycleAutoStore or Power Up Recall Parameter Description CY14B101K Unit Min MaxSoftware Controlled STORE/RECALL Cycles 21 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 101 K SP 25 X C T NvsramOrdering Information Package Diagrams Pin Shrunk Small Outline PackageDocument History Orig. of Change Submission Description of Change DateUpdated Features 2663934Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC SolutionsUSB