CY15E004Q

Document Number: 002-10031 Rev. *B

Page 2 of 22

Contents

Pinout ................................................................................ 3

Pin Definitions .................................................................. 3

Functional Overview ........................................................ 4

Memory Architecture ........................................................ 4

Serial Peripheral Interface – SPI Bus .............................. 4

SPI Overview ............................................................... 4

SPI Modes ................................................................... 5

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 ............................. 6

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

Errata ............................................................................... 19

Part Numbers Affected .............................................. 19

Qualification Status ................................................... 19

Errata Summary ........................................................ 19

Document History Page ................................................. 21

Sales, Solutions, and Legal Information ...................... 22

Worldwide Sales and Design Support ....................... 22

Products .................................................................... 22

PSoC® Solutions ...................................................... 22

Cypress Developer Community ................................. 22

Technical Support ..................................................... 22