Document Number: 001-52037 Rev. *A Page 2 of 18
Contents
Features................................................................................ 1
Description........................................................................... 1
Logic Block Diagram........................................................... 1
Contents............................................................................... 2
Pin Configurations .............................................................. 3
Pin Descriptions.................................................................. 3
Absolute Maximum Ratings ............................................... 4
DC Characteristics .............................................................. 4
AC Test Conditions............................................................. 5
Capacitance ......................................................................... 5
SRAM READ Cycles #1 and #2..................................... 6
SRAM WRITE Cycle #1 and #2 ..................................... 7
AutoStore/POWER UP RECALL......................................... 8
Software-Controlled STORE/RECALL Cycle..................... 9
Hardware STORE Cycle..................................................... 10
Soft Sequence Commands............................................... 10
Mode Selection................................................................... 11
nvSRAM Operation............................................................ 12
nvSRAM....................................................................... 12
SRAM READ................................................................ 12
SRAM WRITE.............................................................. 12
AutoStore Operation...................................................... 12
Hardware STORE (HSB) Operation............................. 12
Software STORE.......................................................... 12
Software RECALL........................................................ 13
Data Protection............................................................. 13
Best Practices .............................................................. 13
Low Average Active Power .......................................... 13
Noise Considerations................................................... 14
Preventing AutoStore................................................... 14
Part Numbering Nomenclature......................................... 16
Package Diagrams............................................................. 17
Document History Page..................................................... 19
Sales, Solutions, and Legal Information......................... 19
Worldwide Sales and Design Support.......................... 19
Products....................................................................... 19
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