AEC Q100 Grade 1 Compliant

This product conforms to specifications per the terms of the Ramtron

standard warranty. The product has completed Ramtron’s

internal qualification testing and has reached production status.

Cypress Semiconductor Corporation

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Document Number: 001-86149 Rev. *A

Revised May 07, 2013

64Kb Serial 3V F-RAM Memory

Features

64K bit Ferroelectric Nonvolatile RAM

Organized as 8,192 x 8 bits

High Endurance 10 Trillion (10

NoDelay™ Writes

Advanced High-Reliability Ferroelectric Process

Fast Serial Peripheral Interface - SPI

Up to 16 MHz Frequency

Direct Hardware Replacement for EEPROM

SPI Mode 0 & 3 (CPOL, CPHA=0,0 & 1,1)

Sophisticated Write Protection Scheme

Hardware Protection

Software Protection

Low Power Consumption

Low Voltage Operation 3.0-3.6V

6 A Standby Current (+85 C)

Industry Standard Configuration

Automotive Temperature -40 C to +125 C

o

Qualified to AEC Q100 Specification

“Green”/RoHS 8-pin SOIC

Description

The FM25CL64B is a 64-kilobit nonvolatile memory

employing an advanced ferroelectric process. A

ferroelectric random access memory or FRAM is

nonvolatile and performs reads and writes like a

RAM. It provides reliable data retention for years

while eliminating the complexities, overhead, and

system

level

reliability

problems

caused

by

EEPROM and other nonvolatile memories.

The FM25CL64B performs write operations at bus

speed. No write delays are incurred. Data is written to

the memory array immediately after each byte has

been transferred to the device. The next bus cycle

may commence without the need for data polling.

The FM25CL64B is capable of supporting 10

13

read/write cycles, or 10 million times more write

cycles than EEPROM.

These capabilities make the FM25CL64B ideal for

nonvolatile memory applications requiring frequent

or rapid writes. Examples range from data collection,

where the number of write cycles may be critical, to

demanding automotive controls where the long write

time of EEPROM can cause data loss.

The FM25CL64B provides substantial benefits to

users of serial EEPROM as a hardware drop-in

replacement. The FM25CL64B uses the high-speed

SPI bus, which enhances the high-speed write

capability

of

FRAM

technology.

Device

specifications are guaranteed over the automotive

temperature range of -40°C to +125°C.

Pin Configuration

Pin Name

Function

/CS

Chip Select

/WP

Write Protect

/HOLD

Hold

SCK

Serial Clock

SI

Serial Data Input

SO

Serial Data Output

VDD

Supply Voltage

VSS

Ground

Ordering Information

FM25CL64B-GA

“Green”/RoHS 8-pin SOIC,

Automotive Grade 1

FM25CL64B-GATR

“Green”/RoHS 8-pin SOIC,

Automotive Grade 1,

Tape & Reel

CS

SO

WP

VSS

VDD

HOLD

SCK

SI

1

2

3

4

8

7

6

5