CY14E256LA
Document Number: 001-54952 Rev. *B
Page 2
Contents
Features ...............................................................................1
Functional Description .......................................................1
Contents ..............................................................................2
Pinouts ................................................................................3
Device Operation ................................................................4
SRAM Read .........................................................................4
SRAM Write .........................................................................4
AutoStore Operation ..........................................................4
Hardware STORE Operation ..............................................4
Hardware RECALL (Power Up) ..........................................5
Software STORE .................................................................5
Software RECALL ...............................................................5
Preventing AutoStore .........................................................6
Data Protection ...................................................................6
Noise Considerations .........................................................6
Best Practices .....................................................................7
Maximum Ratings ...............................................................8
Operating Range .................................................................8
DC Electrical Characteristics ............................................ 8
AC Test Conditions ............................................................ 9
Data Retention and Endurance ......................................... 9
Capacitance ........................................................................ 9
Thermal Resistance ............................................................ 9
AC Switching Characteristics ......................................... 10
AutoStore/Power Up RECALL ......................................... 12
Software Controlled STORE/RECALL Cycle .................. 13
Hardware STORE Cycle ................................................... 14
Switching Waveforms ...................................................... 14
Truth Table For SRAM Operations .................................. 15
Part Numbering Nomenclature ........................................ 15
Ordering Information ........................................................ 16
Package Diagram .............................................................. 17
Document History Page ................................................... 18
Sales, Solutions, and Legal Information ........................ 18
Worldwide Sales and Design Support ......................... 18
Products ...................................................................... 18
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