FM25C160B
Contents
Pinout ................................................................................3
Pin Definitions ..................................................................3
Functional Overview ........................................................4
Memory Architecture ........................................................4
Serial Peripheral Interface – SPI Bus ..............................4
SPI Overview ...............................................................4
SPI Modes ...................................................................6
Power Up to First Access ............................................6
Command Structure ....................................................6
WREN - Set Write Enable Latch .................................6
WRDI - Reset Write Enable Latch ...............................6
Status Register and Write Protection .............................7
RDSR - Read Status Register .....................................7
WRSR - Write Status Register ....................................7
Memory Operation ............................................................8
Write Operation ...........................................................8
Read Operation ...........................................................8
HOLD Pin Operation ...................................................9
Endurance .................................................................10
Maximum Ratings ...........................................................11
Operating Range .............................................................11
DC Electrical Characteristics ........................................11
Data Retention and Endurance .....................................12
Example of an F-RAM Life Time
in an AEC-Q100 Automotive Application .....................12
Capacitance ....................................................................12
Thermal Resistance ........................................................12
AC Test Conditions ........................................................12
AC Switching Characteristics .......................................13
Power Cycle Timing .......................................................15
Ordering Information ......................................................16
Ordering Code Definitions .........................................16
Package Diagram ............................................................17
Acronyms ........................................................................18
Document Conventions .................................................18
Units of Measure .......................................................18
Document History Page .................................................19
Sales, Solutions, and Legal Information ......................20
Worldwide Sales and Design Support .......................20
Products ....................................................................20
PSoC® Solutions ......................................................20
Cypress Developer Community .................................20
Technical Support .....................................................20
Document Number: 001-86150 Rev. *C
Page 2 of 20
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