CY14B256LA-ZS45XI CYPRESS [Cypress Semiconductor], CY14B256LA-ZS45XI Datasheet - Page 2

• Manufacturer Part Number: CY14B256LA-ZS45XI
• Description: 256 Kbit (32K x 8) nvSRAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Contents
Features ...............................................................................1
Functional Description .......................................................1
Contents ..............................................................................2
Pinouts ................................................................................3
Device Operation ................................................................5
SRAM Read .........................................................................5
SRAM Write .........................................................................5
AutoStore Operation ..........................................................5
Hardware STORE Operation ..............................................5
Hardware RECALL (Power Up) ..........................................6
Software STORE .................................................................6
Software RECALL ...............................................................6
Preventing AutoStore .........................................................7
Data Protection ...................................................................7
Noise Considerations .........................................................7
Best Practices .....................................................................8
Maximum Ratings ...............................................................9
Operating Range .................................................................9
Document Number: 001-54707 Rev. *B
DC Electrical Characteristics ............................................ 9
AC Test Conditions ..........................................................10
Data Retention and Endurance .......................................10
Capacitance ......................................................................10
Thermal Resistance ..........................................................10
AC Switching Characteristics .........................................11
AutoStore/Power Up RECALL .........................................13
Software Controlled STORE/RECALL Cycle ..................14
Hardware STORE Cycle ...................................................15
Truth Table For SRAM Operations ..................................16
Part Numbering Nomenclature ........................................16
Ordering Information ........................................................17
Package Diagrams ............................................................18
Document History Page ...................................................20
Sales, Solutions, and Legal Information ........................20
Worldwide Sales and Design Support .........................20
Products ......................................................................20
CY14B256LA
Page 2
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