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FM25V01A

128-Kbit (16K × 8) Serial (SPI) F-RAM

Cypress Semiconductor 

FM25V01A

Contents

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

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

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 ............................. 7

RDSR - Read Status Register ..................................... 7

WRSR - Write Status Register .................................... 7

Memory Operation ............................................................ 8

Write Operation ........................................................... 8

Read Operation ........................................................... 8

Fast Read Operation ................................................... 8

HOLD Pin Operation ................................................. 10

Sleep Mode ............................................................... 10

Device ID ................................................................... 11

Endurance ................................................................. 12

Maximum Ratings ........................................................... 13

Operating Range ............................................................. 13

DC Electrical Characteristics ........................................ 13

Data Retention and Endurance ..................................... 14

Capacitance .................................................................... 14

Thermal Resistance ........................................................ 14

AC Test Conditions ........................................................ 14

AC Switching Characteristics ....................................... 15

Power Cycle Timing ....................................................... 17

Ordering Information ...................................................... 18

Ordering Code Definitions ......................................... 18

Package Diagrams .......................................................... 19

Acronyms ........................................................................ 20

Document Conventions ................................................. 20

Units of Measure ....................................................... 20

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

Document Number: 001-90881 Rev. *E

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