Cypress Semiconductor Perform nvSRAM Manual do Utilizador descarregar pdf (Página 2)

STK14D88

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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Cypress Semiconductor Perform nvSRAM Manual do Utilizador Página 2